{"id":2728972,"date":"2025-07-13T16:01:57","date_gmt":"2025-07-13T23:01:57","guid":{"rendered":"https:\/\/www.esri.com\/arcgis-blog\/?post_type=blog&#038;p=2728972"},"modified":"2026-01-06T14:24:23","modified_gmt":"2026-01-06T22:24:23","slug":"learn-to-map-urban-heat-with-landsat","status":"publish","type":"blog","link":"https:\/\/www.esri.com\/arcgis-blog\/products\/arcgis-living-atlas\/imagery\/learn-to-map-urban-heat-with-landsat","title":{"rendered":"Learn to map urban heat islands with Landsat imagery"},"author":270422,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"open","ping_status":"closed","template":"","format":"standard","meta":{"_acf_changed":false,"_searchwp_excluded":""},"categories":[23341,37141,22931],"tags":[780062,780072,768182,771442],"industry":[],"product":[36581,36551],"class_list":["post-2728972","blog","type-blog","status-publish","format-standard","hentry","category-analytics","category-decision-support","category-imagery","tag-analysisoptimized","tag-lawrasteranalysis","tag-urban-heat","tag-urban-heat-island","product-arcgis-living-atlas","product-arcgis-online"],"acf":{"authors":[{"ID":7071,"user_firstname":"Robert","user_lastname":"Waterman","nickname":"Robert Waterman","user_nicename":"robe9031","display_name":"Robert Waterman","user_email":"RWaterman@esri.com","user_url":"","user_registered":"2018-03-02 00:19:16","user_description":"Robert Waterman leads the ArcGIS Living Atlas Imagery Team at Esri. Robert takes great pride in the work the team does in democratizing imagery and remote sensing, improving accessibility and helping others better understand our planet through Earth Observation with ready-to-use content and capabilities.","user_avatar":"<img data-del=\"avatar\" src='https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2018\/07\/Profile_square.jpg' class='avatar pp-user-avatar avatar-96 photo ' height='96' width='96'\/>"},{"ID":270422,"user_firstname":"James","user_lastname":"Sill","nickname":"James Sill","user_nicename":"jsill","display_name":"James Sill","user_email":"JSill@esri.com","user_url":"","user_registered":"2021-08-30 15:08:30","user_description":"James is Product Engineer for Imagery Analytics at Esri.  James' work is focused on expanding Earth Observation data and analytics available in the Living Atlas.  He has a passion for using modern remote sensing, machine learning, and cloud computing to help the scientific and conservation community to gain a better understanding of our planet.","user_avatar":"<img data-del=\"avatar\" src='https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2021\/09\/profile-213x200.png' class='avatar pp-user-avatar avatar-96 photo ' height='96' width='96'\/>"}],"short_description":"Enabling communities around the world with on-demand urban heat mapping.","flexible_content":[{"acf_fc_layout":"content","content":"<h2 style=\"text-align: center\">Enabling communities around the world with on-demand urban heat mapping.<\/h2>\n<p>&nbsp;<\/p>\n<p>According to the <a href=\"https:\/\/www.epa.gov\/heatislands\/what-are-heat-islands\">United States Environmental Protection Agency<\/a> (EPA), heat islands are urbanized areas that experience higher temperatures than outlying areas. Structures such as buildings, roads, and other infrastructure absorb and re-emit the sun\u2019s heat more than natural landscapes such as forests and water bodies. Urban areas, where these structures are highly concentrated and greenery is limited, become \u201cislands\u201d of higher temperatures relative to outlying areas. These heat islands can have significant impacts on human health and energy consumption.<\/p>\n<p>Mapping heat islands aids in understanding impacts and creating mitigation strategies. However, with variable data sources and methodologies to consider, this can be a complex undertaking. This article is focused on intra-urban heat islands, mapping the variability of surface heat intensity within a defined urban area extent. Furthermore, our goal is to provide a simple, cost effective, and repeatable process for anyone, anywhere, to begin measuring and analyzing urban heat. This is reflected in the methodology and data source selected.<\/p>\n<p>Jointly managed by NASA and the USGS, Landsat is the longest running spaceborne earth imaging and observation program in history. <a href=\"https:\/\/www.usgs.gov\/landsat-missions\/landsat-collection-2-level-2-science-products\">Landsat Level-2 science products<\/a> provide global multispectral imagery from 1982 to present, including a derived Surface Temperature product.<\/p>\n<p>ArcGIS Living Atlas of the World enables access to the entire <a href=\"https:\/\/www.arcgis.com\/home\/item.html?id=bd6b545b95654d91a0b7faf7b5e010f5\">Landsat Level-2<\/a> archive as a single imagery layer optimized for analysis. This article provides a step-by-step tutorial for using Landsat imagery from Living Atlas, and analysis tools in ArcGIS Online, to perform analysis and map surface intra-urban heat islands (SIUHI) for urban areas around the world.<\/p>\n"},{"acf_fc_layout":"content","content":"<h1 id=\"quick\"><\/h1>\n<p><img decoding=\"async\" src=\"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2020\/03\/breakgray.png\" alt=\"\" \/><\/p>\n<h3><strong>Table of Contents<\/strong><\/h3>\n<ul>\n<li><a href=\"#requirements\">System Requirements<\/a><\/li>\n<li><a href=\"#mapviewer\">Prepare a web map for analysis<\/a><\/li>\n<li><a href=\"#aggregate\">Analysis Part 1: Data Aggregation<\/a><\/li>\n<li><a href=\"#zonalmean\">Analysis Part 2: Zonal Mean<\/a><\/li>\n<li><a href=\"#calcsiuhi\">Analysis Part 3: Surface Heat Index<\/a><\/li>\n<li><a href=\"#results\">Assess the results<\/a><\/li>\n<\/ul>\n<h1 id=\"requirements\"><\/h1>\n<p><img decoding=\"async\" src=\"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2020\/03\/breakgray.png\" alt=\"\" \/><\/p>\n<h3><strong>System Requirements<\/strong><\/h3>\n<ul>\n<li>An ArcGIS Online organizational account with credits*<\/li>\n<li>A minimum of a <a href=\"https:\/\/www.esri.com\/en-us\/arcgis\/products\/user-types\/explore\/professional\">Professional User Type<\/a> with a <a href=\"https:\/\/doc.arcgis.com\/en\/arcgis-online\/administer\/member-roles.htm\">Publisher role<\/a>.<\/li>\n<li>Imagery layers optimized for analysis enabled for your organization**<\/li>\n<\/ul>\n<p>*This tutorial consumes a total of approximately 5 credits. The number of credits will vary depending on the temporal and geographic extent.<\/p>\n<p>**<span class=\"ph\">Living Atlas<\/span> imagery layers optimized for analysis provide scalability for larger and more diverse workflows. This capability must be enabled to avoid size constraints and allow the urban heat analysis to scale appropriately. See <a href=\"https:\/\/www.esri.com\/arcgis-blog\/products\/arcgis-living-atlas\/imagery\/law-imagery-layers-for-analysis\">ArcGIS Living Atlas ready-to-use imagery layers for analysis<\/a> for more information, including how to <a href=\"https:\/\/www.esri.com\/arcgis-blog\/products\/arcgis-living-atlas\/imagery\/law-imagery-layers-for-analysis#enabling\">enable imagery layers optimized for analysis<\/a>.<\/p>\n<h1 id=\"mapviewer\"><\/h1>\n<p><img decoding=\"async\" src=\"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2020\/03\/breakgray.png\" alt=\"\" \/><\/p>\n<h3><strong>Prepare a web map for analysis<\/strong><\/h3>\n<p><span data-teams=\"true\"><strong>Step 1<\/strong>: Go to the <a href=\"https:\/\/livingatlas.arcgis.com\/\">ArcGIS Living Atlas of the World<\/a> website, enter <strong>&#8220;Landsat Level-2&#8221;<\/strong> in the search bar, and click search. Find the Landsat Level-2 item and click the thumbnail to <strong>View item details<\/strong>.<\/span><\/p>\n"},{"acf_fc_layout":"image","image":{"ID":2867602,"id":2867602,"title":"Search LAW for Landsat Level-2b","filename":"Search-LAW-for-Landsat-Level-2b-scaled.jpg","filesize":160713,"url":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Search-LAW-for-Landsat-Level-2b-scaled.jpg","link":"https:\/\/www.esri.com\/arcgis-blog\/products\/arcgis-living-atlas\/imagery\/learn-to-map-urban-heat-with-landsat\/search-law-for-landsat-level-2b","alt":"","author":"7071","description":"","caption":"","name":"search-law-for-landsat-level-2b","status":"inherit","uploaded_to":2728972,"date":"2025-06-29 22:18:04","modified":"2025-06-29 22:18:04","menu_order":0,"mime_type":"image\/jpeg","type":"image","subtype":"jpeg","icon":"https:\/\/www.esri.com\/arcgis-blog\/wp-includes\/images\/media\/default.png","width":2560,"height":890,"sizes":{"thumbnail":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Search-LAW-for-Landsat-Level-2b-213x200.jpg","thumbnail-width":213,"thumbnail-height":200,"medium":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Search-LAW-for-Landsat-Level-2b-scaled.jpg","medium-width":464,"medium-height":161,"medium_large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Search-LAW-for-Landsat-Level-2b-scaled.jpg","medium_large-width":768,"medium_large-height":267,"large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Search-LAW-for-Landsat-Level-2b-scaled.jpg","large-width":1920,"large-height":668,"1536x1536":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Search-LAW-for-Landsat-Level-2b-1536x534.jpg","1536x1536-width":1536,"1536x1536-height":534,"2048x2048":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Search-LAW-for-Landsat-Level-2b-2048x712.jpg","2048x2048-width":2048,"2048x2048-height":712,"card_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Search-LAW-for-Landsat-Level-2b-826x287.jpg","card_image-width":826,"card_image-height":287,"wide_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Search-LAW-for-Landsat-Level-2b-1920x667.jpg","wide_image-width":1920,"wide_image-height":667}},"image_position":"center","orientation":"horizontal","hyperlink":""},{"acf_fc_layout":"content","content":"<p class=\"\" data-start=\"257\" data-end=\"292\"><strong>Step 2<\/strong>: <span data-teams=\"true\">All of the details of what this imagery layer provides can be found on this item page, including key properties, available spectral bands, and more. When you are ready to proceed, click <strong>Open in Map Viewer<\/strong>.<\/span><\/p>\n<p>&nbsp;<\/p>\n"},{"acf_fc_layout":"image","image":{"ID":2867612,"id":2867612,"title":"LSL2 LAW Item Page3","filename":"LSL2-LAW-Item-Page3-scaled.jpg","filesize":277187,"url":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/LSL2-LAW-Item-Page3-scaled.jpg","link":"https:\/\/www.esri.com\/arcgis-blog\/products\/arcgis-living-atlas\/imagery\/learn-to-map-urban-heat-with-landsat\/lsl2-law-item-page3","alt":"","author":"7071","description":"","caption":"","name":"lsl2-law-item-page3","status":"inherit","uploaded_to":2728972,"date":"2025-06-29 22:19:39","modified":"2025-06-29 22:19:39","menu_order":0,"mime_type":"image\/jpeg","type":"image","subtype":"jpeg","icon":"https:\/\/www.esri.com\/arcgis-blog\/wp-includes\/images\/media\/default.png","width":2560,"height":1469,"sizes":{"thumbnail":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/LSL2-LAW-Item-Page3-213x200.jpg","thumbnail-width":213,"thumbnail-height":200,"medium":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/LSL2-LAW-Item-Page3-scaled.jpg","medium-width":455,"medium-height":261,"medium_large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/LSL2-LAW-Item-Page3-scaled.jpg","medium_large-width":768,"medium_large-height":441,"large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/LSL2-LAW-Item-Page3-scaled.jpg","large-width":1882,"large-height":1080,"1536x1536":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/LSL2-LAW-Item-Page3-1536x882.jpg","1536x1536-width":1536,"1536x1536-height":882,"2048x2048":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/LSL2-LAW-Item-Page3-2048x1175.jpg","2048x2048-width":2048,"2048x2048-height":1175,"card_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/LSL2-LAW-Item-Page3-810x465.jpg","card_image-width":810,"card_image-height":465,"wide_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/LSL2-LAW-Item-Page3-1882x1080.jpg","wide_image-width":1882,"wide_image-height":1080}},"image_position":"center","orientation":"horizontal","hyperlink":""},{"acf_fc_layout":"content","content":"<p>The Landsat imagery layer should now be displayed in Map Viewer. The layer loads with a default &#8220;Natural Color&#8221; (RGB) rendering.<\/p>\n"},{"acf_fc_layout":"image","image":{"ID":2776062,"id":2776062,"title":"LSL2 Map Viewer","filename":"LSL2-Map-Viewer.jpg","filesize":128614,"url":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/LSL2-Map-Viewer.jpg","link":"https:\/\/www.esri.com\/arcgis-blog\/products\/arcgis-living-atlas\/imagery\/learn-to-map-urban-heat-with-landsat\/lsl2-map-viewer","alt":"","author":"7071","description":"","caption":"","name":"lsl2-map-viewer","status":"inherit","uploaded_to":2728972,"date":"2025-04-28 22:40:18","modified":"2025-04-28 22:40:18","menu_order":0,"mime_type":"image\/jpeg","type":"image","subtype":"jpeg","icon":"https:\/\/www.esri.com\/arcgis-blog\/wp-includes\/images\/media\/default.png","width":1100,"height":478,"sizes":{"thumbnail":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/LSL2-Map-Viewer-213x200.jpg","thumbnail-width":213,"thumbnail-height":200,"medium":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/LSL2-Map-Viewer.jpg","medium-width":464,"medium-height":202,"medium_large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/LSL2-Map-Viewer.jpg","medium_large-width":768,"medium_large-height":334,"large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/LSL2-Map-Viewer.jpg","large-width":1100,"large-height":478,"1536x1536":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/LSL2-Map-Viewer.jpg","1536x1536-width":1100,"1536x1536-height":478,"2048x2048":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/LSL2-Map-Viewer.jpg","2048x2048-width":1100,"2048x2048-height":478,"card_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/LSL2-Map-Viewer-826x359.jpg","card_image-width":826,"card_image-height":359,"wide_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/LSL2-Map-Viewer.jpg","wide_image-width":1100,"wide_image-height":478}},"image_position":"center","orientation":"horizontal","hyperlink":""},{"acf_fc_layout":"content","content":"<p class=\"\" data-start=\"298\" data-end=\"337\"><strong>Step 3<\/strong>: <span data-teams=\"true\">Next, a polygon feature will be added to the map to define the area of interest (AOI) and constrain the processing extent for analysis. For this example, we will focus on the city of Monterrey, Mexico.<\/span><\/p>\n<ol>\n<li data-start=\"298\" data-end=\"337\"><span data-teams=\"true\">Select <strong>Add Layer.<\/strong><\/span><\/li>\n<li data-start=\"298\" data-end=\"337\">Select <strong>Browse Layers.<\/strong><\/li>\n<li data-start=\"298\" data-end=\"337\">Select <strong>ArcGIS Online.<\/strong><\/li>\n<li data-start=\"298\" data-end=\"337\">Enter <span data-teams=\"true\">&#8220;<strong>Monterrey GHS-UCDB Heat Island AOI<\/strong>&#8221; into the search dialogue and click search.<\/span><\/li>\n<li data-start=\"298\" data-end=\"337\">Click <strong>Add<\/strong> to add the layer to the map.<\/li>\n<\/ol>\n<p>&nbsp;<\/p>\n"},{"acf_fc_layout":"image","image":{"ID":2896472,"id":2896472,"title":"Search find load Monterrey AOI5","filename":"Search-find-load-Monterrey-AOI5.jpg","filesize":23262,"url":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Search-find-load-Monterrey-AOI5.jpg","link":"https:\/\/www.esri.com\/arcgis-blog\/products\/arcgis-living-atlas\/imagery\/learn-to-map-urban-heat-with-landsat\/search-find-load-monterrey-aoi5","alt":"","author":"7071","description":"","caption":"","name":"search-find-load-monterrey-aoi5","status":"inherit","uploaded_to":2728972,"date":"2025-07-13 07:11:56","modified":"2025-07-13 07:11:56","menu_order":0,"mime_type":"image\/jpeg","type":"image","subtype":"jpeg","icon":"https:\/\/www.esri.com\/arcgis-blog\/wp-includes\/images\/media\/default.png","width":400,"height":237,"sizes":{"thumbnail":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Search-find-load-Monterrey-AOI5-213x200.jpg","thumbnail-width":213,"thumbnail-height":200,"medium":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Search-find-load-Monterrey-AOI5.jpg","medium-width":400,"medium-height":237,"medium_large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Search-find-load-Monterrey-AOI5.jpg","medium_large-width":400,"medium_large-height":237,"large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Search-find-load-Monterrey-AOI5.jpg","large-width":400,"large-height":237,"1536x1536":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Search-find-load-Monterrey-AOI5.jpg","1536x1536-width":400,"1536x1536-height":237,"2048x2048":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Search-find-load-Monterrey-AOI5.jpg","2048x2048-width":400,"2048x2048-height":237,"card_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Search-find-load-Monterrey-AOI5.jpg","card_image-width":400,"card_image-height":237,"wide_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Search-find-load-Monterrey-AOI5.jpg","wide_image-width":400,"wide_image-height":237}},"image_position":"left-center","orientation":"horizontal","hyperlink":""},{"acf_fc_layout":"content","content":"<p>&nbsp;<\/p>\n<p><strong>Step 4<\/strong>: Next, you will load three Raster Function Template (RFT) items into the map, starting with Part 1 of 3. A <a href=\"https:\/\/doc.arcgis.com\/en\/arcgis-online\/manage-data\/create-raster-function-template.htm\">raster function template<\/a> is essentially a processing model where multiple raster functions are sequentially chained together to execute a set of commands.<\/p>\n<ol>\n<li>Click <strong>Analysis<\/strong> on the right side tool bar.<\/li>\n<li>Click <strong>Raster Function Templates<\/strong> within the Analysis panel.<\/li>\n<li>Click <strong>Browse<\/strong> Raster Function Templates to open the Browse panel.<\/li>\n<li>From the Browse panel, select <strong>Living Atlas<\/strong> from the drop down list.<\/li>\n<li>In the search bar, enter and search for &#8220;<strong>Landsat Level-2 SIUHI &#8211; Part 1 of 3 &#8211; Data Aggregation<\/strong>&#8220;.<\/li>\n<li>Select the Data Aggregation RFT and click <strong>Confirm<\/strong>.<\/li>\n<\/ol>\n<p>&nbsp;<\/p>\n"},{"acf_fc_layout":"image","image":{"ID":2896782,"id":2896782,"title":"Browse Aggregation RFT5","filename":"Browse-Aggregation-RFT5.png","filesize":433507,"url":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Browse-Aggregation-RFT5.png","link":"https:\/\/www.esri.com\/arcgis-blog\/products\/arcgis-living-atlas\/imagery\/learn-to-map-urban-heat-with-landsat\/browse-aggregation-rft5","alt":"","author":"7071","description":"","caption":"","name":"browse-aggregation-rft5","status":"inherit","uploaded_to":2728972,"date":"2025-07-14 00:04:10","modified":"2025-07-14 00:04:10","menu_order":0,"mime_type":"image\/png","type":"image","subtype":"png","icon":"https:\/\/www.esri.com\/arcgis-blog\/wp-includes\/images\/media\/default.png","width":3358,"height":1753,"sizes":{"thumbnail":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Browse-Aggregation-RFT5-213x200.png","thumbnail-width":213,"thumbnail-height":200,"medium":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Browse-Aggregation-RFT5.png","medium-width":464,"medium-height":242,"medium_large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Browse-Aggregation-RFT5.png","medium_large-width":768,"medium_large-height":401,"large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Browse-Aggregation-RFT5.png","large-width":1920,"large-height":1002,"1536x1536":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Browse-Aggregation-RFT5-1536x802.png","1536x1536-width":1536,"1536x1536-height":802,"2048x2048":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Browse-Aggregation-RFT5-2048x1069.png","2048x2048-width":2048,"2048x2048-height":1069,"card_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Browse-Aggregation-RFT5-826x431.png","card_image-width":826,"card_image-height":431,"wide_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Browse-Aggregation-RFT5-1920x1002.png","wide_image-width":1920,"wide_image-height":1002}},"image_position":"center","orientation":"horizontal","hyperlink":""},{"acf_fc_layout":"content","content":"<p>&nbsp;<\/p>\n<p><strong>Step 5<\/strong>:\u00a0 The chain of processing steps within the selected RFT is now displayed in the Edit panel. However, the selected RFT is ready-to-use, so no editing is required. <strong>Close<\/strong> the edit panel.<\/p>\n"},{"acf_fc_layout":"image","image":{"ID":2892142,"id":2892142,"title":"Aggregate RFT edit panel4","filename":"Aggregate-RFT-edit-panel4-scaled.jpg","filesize":69372,"url":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Aggregate-RFT-edit-panel4-scaled.jpg","link":"https:\/\/www.esri.com\/arcgis-blog\/products\/arcgis-living-atlas\/imagery\/learn-to-map-urban-heat-with-landsat\/aggregate-rft-edit-panel4","alt":"","author":"7071","description":"","caption":"","name":"aggregate-rft-edit-panel4","status":"inherit","uploaded_to":2728972,"date":"2025-07-11 04:59:49","modified":"2025-07-11 04:59:49","menu_order":0,"mime_type":"image\/jpeg","type":"image","subtype":"jpeg","icon":"https:\/\/www.esri.com\/arcgis-blog\/wp-includes\/images\/media\/default.png","width":2560,"height":836,"sizes":{"thumbnail":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Aggregate-RFT-edit-panel4-213x200.jpg","thumbnail-width":213,"thumbnail-height":200,"medium":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Aggregate-RFT-edit-panel4-scaled.jpg","medium-width":464,"medium-height":152,"medium_large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Aggregate-RFT-edit-panel4-scaled.jpg","medium_large-width":768,"medium_large-height":251,"large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Aggregate-RFT-edit-panel4-scaled.jpg","large-width":1920,"large-height":627,"1536x1536":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Aggregate-RFT-edit-panel4-1536x502.jpg","1536x1536-width":1536,"1536x1536-height":502,"2048x2048":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Aggregate-RFT-edit-panel4-2048x669.jpg","2048x2048-width":2048,"2048x2048-height":669,"card_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Aggregate-RFT-edit-panel4-826x270.jpg","card_image-width":826,"card_image-height":270,"wide_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Aggregate-RFT-edit-panel4-1920x627.jpg","wide_image-width":1920,"wide_image-height":627}},"image_position":"center","orientation":"horizontal","hyperlink":""},{"acf_fc_layout":"content","content":"<p>&nbsp;<\/p>\n<p><strong>Step 6<\/strong>: Next, you will load the other two RFT&#8217;s, Part 2 and Part 3, into your map. Repeat steps 4 and 5 for &#8220;<strong>Landsat Level-2 SIUHI &#8211; Part 2 of 3 &#8211; Zonal Mean<\/strong>&#8221; and &#8220;<strong>Landsat Level-2 SIUHI &#8211; Part 3 of 3 &#8211; Surface Heat Index<\/strong>&#8220;.<\/p>\n<p>&nbsp;<\/p>\n<p><strong>Step 7<\/strong>:\u00a0 With all three RFT&#8217;s, the Landsat Level-2 imagery layer, and the Monterrey AOI successfully loaded into the map, click <strong>Save<\/strong>\u00a0and <strong>Save As<\/strong> to save the project as a Web Map item in your ArcGIS Online account named &#8220;<strong>Monterrey, MX SIUHI<\/strong>&#8220;. You are now ready for\u00a0 Analysis Part 1.<\/p>\n"},{"acf_fc_layout":"image","image":{"ID":2824442,"id":2824442,"title":"Save web map2","filename":"Save-web-map2-scaled.jpg","filesize":403094,"url":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Save-web-map2-scaled.jpg","link":"https:\/\/www.esri.com\/arcgis-blog\/products\/arcgis-living-atlas\/imagery\/learn-to-map-urban-heat-with-landsat\/save-web-map2","alt":"","author":"7071","description":"","caption":"","name":"save-web-map2","status":"inherit","uploaded_to":2728972,"date":"2025-06-08 23:09:35","modified":"2025-06-08 23:09:35","menu_order":0,"mime_type":"image\/jpeg","type":"image","subtype":"jpeg","icon":"https:\/\/www.esri.com\/arcgis-blog\/wp-includes\/images\/media\/default.png","width":2560,"height":1074,"sizes":{"thumbnail":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Save-web-map2-213x200.jpg","thumbnail-width":213,"thumbnail-height":200,"medium":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Save-web-map2-scaled.jpg","medium-width":464,"medium-height":195,"medium_large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Save-web-map2-scaled.jpg","medium_large-width":768,"medium_large-height":322,"large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Save-web-map2-scaled.jpg","large-width":1920,"large-height":806,"1536x1536":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Save-web-map2-1536x645.jpg","1536x1536-width":1536,"1536x1536-height":645,"2048x2048":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Save-web-map2-2048x860.jpg","2048x2048-width":2048,"2048x2048-height":860,"card_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Save-web-map2-826x347.jpg","card_image-width":826,"card_image-height":347,"wide_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Save-web-map2-1920x806.jpg","wide_image-width":1920,"wide_image-height":806}},"image_position":"center","orientation":"horizontal","hyperlink":""},{"acf_fc_layout":"content","content":"<h1 id=\"aggregate\"><\/h1>\n<p>&nbsp;<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2020\/03\/breakgray.png\" alt=\"\" \/><\/p>\n<h3><strong>Analysis Part 1: Data Aggregation<\/strong><\/h3>\n<p>The following is a summary of the processing steps involved with the Data Aggregation RFT:<\/p>\n<ul>\n<li>A spatiotemporal selection of Landsat scenes.<\/li>\n<li>Band extraction: Green (Band 3), Red (Band 4), SWIR1 (Band 6), Near Infrared (Band 5), Surface Temperature in degrees Kelvin (Band 8), and the QA Band (Band 9).<\/li>\n<li>A statistical mean calculation of cloud-free* overlapping pixels for each band.<\/li>\n<\/ul>\n<p>The output produced is a seasonal mean raster containing the five bands required for the SUHI calculation. Note, the QA band is extracted and used only for cloud masking purposes and is not persisted in the mean aggregate output.<\/p>\n"},{"acf_fc_layout":"content","content":"<p>&nbsp;<\/p>\n<p><strong>Step1<\/strong>:\u00a0 In the web map created in the first section, set the imagery layer <strong>Processing Template<\/strong> to <strong>None<\/strong>:<\/p>\n<ol>\n<li>Click on <strong>Landsat Level-2<\/strong> from the contents pane to activate the right hand tool bar for that layer.<\/li>\n<li>Click on Processing Templates to display the full list of available templates.<\/li>\n<li>Scroll to the bottom of the list and select <strong>None<\/strong>.<\/li>\n<li>Click <strong>Done<\/strong>.<\/li>\n<\/ol>\n<p>Setting the default template to <strong>None<\/strong> exposes all the available Landsat Level-2 bands for analysis but results in a solid grey display of the imagery.<\/p>\n"},{"acf_fc_layout":"image","image":{"ID":2896792,"id":2896792,"title":"Set processing template to none-5","filename":"Set-processing-template-to-none-5-scaled.jpg","filesize":130186,"url":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Set-processing-template-to-none-5-scaled.jpg","link":"https:\/\/www.esri.com\/arcgis-blog\/products\/arcgis-living-atlas\/imagery\/learn-to-map-urban-heat-with-landsat\/set-processing-template-to-none-5","alt":"","author":"7071","description":"","caption":"","name":"set-processing-template-to-none-5","status":"inherit","uploaded_to":2728972,"date":"2025-07-14 00:09:59","modified":"2025-07-14 00:09:59","menu_order":0,"mime_type":"image\/jpeg","type":"image","subtype":"jpeg","icon":"https:\/\/www.esri.com\/arcgis-blog\/wp-includes\/images\/media\/default.png","width":2560,"height":982,"sizes":{"thumbnail":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Set-processing-template-to-none-5-213x200.jpg","thumbnail-width":213,"thumbnail-height":200,"medium":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Set-processing-template-to-none-5-scaled.jpg","medium-width":464,"medium-height":178,"medium_large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Set-processing-template-to-none-5-scaled.jpg","medium_large-width":768,"medium_large-height":295,"large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Set-processing-template-to-none-5-scaled.jpg","large-width":1920,"large-height":737,"1536x1536":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Set-processing-template-to-none-5-1536x589.jpg","1536x1536-width":1536,"1536x1536-height":589,"2048x2048":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Set-processing-template-to-none-5-2048x785.jpg","2048x2048-width":2048,"2048x2048-height":785,"card_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Set-processing-template-to-none-5-826x317.jpg","card_image-width":826,"card_image-height":317,"wide_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Set-processing-template-to-none-5-1920x736.jpg","wide_image-width":1920,"wide_image-height":736}},"image_position":"center","orientation":"horizontal","hyperlink":""},{"acf_fc_layout":"content","content":"<p>Step 2: Open the first RFT.<\/p>\n<ol>\n<li>Under <strong>Analysis<\/strong>, open the <strong>Raster Function Templates<\/strong> panel.<\/li>\n<li>Click the three dots on <strong>Landsat Level-2 SIUHI &#8211; Part 1 of 3 &#8211; Data Aggregation.<\/strong><\/li>\n<li>Select <strong>Open<\/strong>.<\/li>\n<\/ol>\n"},{"acf_fc_layout":"image","image":{"ID":2892202,"id":2892202,"title":"Open Data Aggregation3","filename":"Open-Data-Aggregation3.jpg","filesize":26999,"url":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Open-Data-Aggregation3.jpg","link":"https:\/\/www.esri.com\/arcgis-blog\/products\/arcgis-living-atlas\/imagery\/learn-to-map-urban-heat-with-landsat\/open-data-aggregation3","alt":"","author":"7071","description":"","caption":"","name":"open-data-aggregation3","status":"inherit","uploaded_to":2728972,"date":"2025-07-11 06:30:17","modified":"2025-07-11 06:30:17","menu_order":0,"mime_type":"image\/jpeg","type":"image","subtype":"jpeg","icon":"https:\/\/www.esri.com\/arcgis-blog\/wp-includes\/images\/media\/default.png","width":300,"height":438,"sizes":{"thumbnail":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Open-Data-Aggregation3-213x200.jpg","thumbnail-width":213,"thumbnail-height":200,"medium":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Open-Data-Aggregation3.jpg","medium-width":179,"medium-height":261,"medium_large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Open-Data-Aggregation3.jpg","medium_large-width":300,"medium_large-height":438,"large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Open-Data-Aggregation3.jpg","large-width":300,"large-height":438,"1536x1536":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Open-Data-Aggregation3.jpg","1536x1536-width":300,"1536x1536-height":438,"2048x2048":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Open-Data-Aggregation3.jpg","2048x2048-width":300,"2048x2048-height":438,"card_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Open-Data-Aggregation3.jpg","card_image-width":300,"card_image-height":438,"wide_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Open-Data-Aggregation3.jpg","wide_image-width":300,"wide_image-height":438}},"image_position":"left-center","orientation":"horizontal","hyperlink":""},{"acf_fc_layout":"content","content":"<p>&nbsp;<\/p>\n<p><strong>Step 3<\/strong>:\u00a0 With the input parameters panel now open, enter the required information and run the RFT:<\/p>\n<ol>\n<li>Select <strong>Landsat Level-2<\/strong> as the input raster.<\/li>\n<li>Enter &#8220;<strong>year = 2024 AND month IN (6, 7, 8)<\/strong>&#8221; as the input Where Clause to constrain the aggregation to images acquired in June, July, and August of 2024.<\/li>\n<li>Select <span data-teams=\"true\"><strong>Monterrey GHS-UCDB Heat Island AOI<\/strong>\u00a0as the input Query Geometry and select the option to <strong>Use input features for clipping geometry<\/strong>. This will further constrain the aggregation to images intersecting the AOI.<\/span><\/li>\n<li>Enter an <strong>Output name<\/strong> for the output aggregate hosted imagery layer, &#8220;<strong>Monterrey SIUHI Data Aggregation<\/strong>&#8220;. The output will be stored in your ArcGIS Online organization and used as input to the next step.<\/li>\n<li>Clicking <strong>Estimate Credits<\/strong> will provide an estimate of how many credits will be consumed by the analysis job. Estimating credits is recommended but not required to run the analysis. A larger analysis job (larger area or longer time span) will require more credits.<\/li>\n<li>Click <strong>Run<\/strong> to begin processing.<\/li>\n<\/ol>\n<p>&nbsp;<\/p>\n"},{"acf_fc_layout":"image","image":{"ID":2896652,"id":2896652,"title":"Aggregate RFT parameters panel4","filename":"Aggregate-RFT-parameters-panel4.png","filesize":935213,"url":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Aggregate-RFT-parameters-panel4.png","link":"https:\/\/www.esri.com\/arcgis-blog\/products\/arcgis-living-atlas\/imagery\/learn-to-map-urban-heat-with-landsat\/aggregate-rft-parameters-panel4","alt":"","author":"7071","description":"","caption":"","name":"aggregate-rft-parameters-panel4","status":"inherit","uploaded_to":2728972,"date":"2025-07-13 22:18:43","modified":"2025-07-13 22:18:43","menu_order":0,"mime_type":"image\/png","type":"image","subtype":"png","icon":"https:\/\/www.esri.com\/arcgis-blog\/wp-includes\/images\/media\/default.png","width":2421,"height":2421,"sizes":{"thumbnail":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Aggregate-RFT-parameters-panel4-213x200.png","thumbnail-width":213,"thumbnail-height":200,"medium":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Aggregate-RFT-parameters-panel4.png","medium-width":261,"medium-height":261,"medium_large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Aggregate-RFT-parameters-panel4.png","medium_large-width":768,"medium_large-height":768,"large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Aggregate-RFT-parameters-panel4.png","large-width":1080,"large-height":1080,"1536x1536":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Aggregate-RFT-parameters-panel4-1536x1536.png","1536x1536-width":1536,"1536x1536-height":1536,"2048x2048":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Aggregate-RFT-parameters-panel4-2048x2048.png","2048x2048-width":2048,"2048x2048-height":2048,"card_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Aggregate-RFT-parameters-panel4-465x465.png","card_image-width":465,"card_image-height":465,"wide_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Aggregate-RFT-parameters-panel4-1080x1080.png","wide_image-width":1080,"wide_image-height":1080}},"image_position":"center","orientation":"horizontal","hyperlink":""},{"acf_fc_layout":"content","content":"<p><strong>NOTE<\/strong>: You can click <strong>History<\/strong> to see job history as well as the processing status of a current job.<\/p>\n"},{"acf_fc_layout":"image","image":{"ID":2896632,"id":2896632,"title":"job status","filename":"job-status.jpg","filesize":3602,"url":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/job-status.jpg","link":"https:\/\/www.esri.com\/arcgis-blog\/products\/arcgis-living-atlas\/imagery\/learn-to-map-urban-heat-with-landsat\/job-status","alt":"","author":"7071","description":"","caption":"","name":"job-status","status":"inherit","uploaded_to":2728972,"date":"2025-07-13 22:05:46","modified":"2025-07-13 22:05:46","menu_order":0,"mime_type":"image\/jpeg","type":"image","subtype":"jpeg","icon":"https:\/\/www.esri.com\/arcgis-blog\/wp-includes\/images\/media\/default.png","width":300,"height":45,"sizes":{"thumbnail":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/job-status-213x45.jpg","thumbnail-width":213,"thumbnail-height":45,"medium":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/job-status.jpg","medium-width":300,"medium-height":45,"medium_large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/job-status.jpg","medium_large-width":300,"medium_large-height":45,"large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/job-status.jpg","large-width":300,"large-height":45,"1536x1536":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/job-status.jpg","1536x1536-width":300,"1536x1536-height":45,"2048x2048":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/job-status.jpg","2048x2048-width":300,"2048x2048-height":45,"card_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/job-status.jpg","card_image-width":300,"card_image-height":45,"wide_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/job-status.jpg","wide_image-width":300,"wide_image-height":45}},"image_position":"left-center","orientation":"horizontal","hyperlink":""},{"acf_fc_layout":"content","content":"<p>&nbsp;<\/p>\n<p><strong>Step 4<\/strong>: The result of Part 1 &#8211; Data Aggregation is a five-band seasonal mean imagery layer clipped to the input AOI boundary. When processing completes, the resulting hosted imagery layer is saved to your organization and displayed in your map. Click the <strong>clock icon<\/strong> to turn off the time slider and click <strong>Save<\/strong> to save your map. You are now ready for <strong>Analysis Part 2: Zonal Mean<\/strong>.<\/p>\n"},{"acf_fc_layout":"image","image":{"ID":2892102,"id":2892102,"title":"Aggregate output","filename":"Aggregate-output-1-scaled.jpg","filesize":160782,"url":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Aggregate-output-1-scaled.jpg","link":"https:\/\/www.esri.com\/arcgis-blog\/products\/arcgis-living-atlas\/imagery\/learn-to-map-urban-heat-with-landsat\/aggregate-output-2","alt":"","author":"7071","description":"","caption":"","name":"aggregate-output-2","status":"inherit","uploaded_to":2728972,"date":"2025-07-11 02:54:01","modified":"2025-07-11 02:54:01","menu_order":0,"mime_type":"image\/jpeg","type":"image","subtype":"jpeg","icon":"https:\/\/www.esri.com\/arcgis-blog\/wp-includes\/images\/media\/default.png","width":2560,"height":1069,"sizes":{"thumbnail":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Aggregate-output-1-213x200.jpg","thumbnail-width":213,"thumbnail-height":200,"medium":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Aggregate-output-1-scaled.jpg","medium-width":464,"medium-height":194,"medium_large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Aggregate-output-1-scaled.jpg","medium_large-width":768,"medium_large-height":321,"large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Aggregate-output-1-scaled.jpg","large-width":1920,"large-height":802,"1536x1536":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Aggregate-output-1-1536x641.jpg","1536x1536-width":1536,"1536x1536-height":641,"2048x2048":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Aggregate-output-1-2048x855.jpg","2048x2048-width":2048,"2048x2048-height":855,"card_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Aggregate-output-1-826x345.jpg","card_image-width":826,"card_image-height":345,"wide_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Aggregate-output-1-1920x802.jpg","wide_image-width":1920,"wide_image-height":802}},"image_position":"center","orientation":"horizontal","hyperlink":""},{"acf_fc_layout":"content","content":"<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n"},{"acf_fc_layout":"content","content":"<blockquote>\n<h5><em>*This workflow provides a simple streamlined way to analyze a collection of images intersecting an area of interest for a specified period of time. The process leverages the cloud mask provided with Landsat Level-2 Science Products to omit cloudy pixels from all input images. While this approach works well for many cases, it may not account for every of cloud occurrence. For the most precise SIUHI measurements and analysis results, users may choose to employ a more rigorous image selection process including visual inspection of each input image.<\/em><\/h5>\n<\/blockquote>\n"},{"acf_fc_layout":"content","content":"<h1 id=\"zonalmean\"><\/h1>\n<p>&nbsp;<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2020\/03\/breakgray.png\" alt=\"\" \/><\/p>\n<h3><strong>Analysis Part 2: Zonal Mean<\/strong><\/h3>\n<p>The next part of the workflow is to calculate a zonal mean surface temperature from the aggregate layer created in Part 1. This RFT uses the Extract Band, Band Arithmetic, Clip, and Zonal Statistics Raster Functions. The steps include:<\/p>\n<ul>\n<li>Calculate a Normalized Difference Vegetation Index (NDVI) to distinguish vegetated vs non-vegetated pixels.<\/li>\n<li>Calculate a Modified Normalized Different Water Index (MNDWI) to isolate and exclude water pixels.<\/li>\n<li>Calculate a single vegetated mean surface temperature value for the AOI.<\/li>\n<\/ul>\n<p>The output is an imagery layer with a zonal mean surface temperature value of all vegetated pixels within the AOI.<\/p>\n<p>&nbsp;<\/p>\n<p><strong>Step 1<\/strong>: Open the first RFT. Within the <strong>Analysis<\/strong> options , open the <strong>Raster Function Templates<\/strong> panel, click the three dots on <strong>Landsat Level-2 SIUHI &#8211; Part 2 of 3 &#8211; Zonal Mean<\/strong>, and select <strong>Open<\/strong>.<\/p>\n"},{"acf_fc_layout":"image","image":{"ID":2896232,"id":2896232,"title":"Open Zonal Mean2","filename":"Open-Zonal-Mean2.jpg","filesize":29410,"url":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Open-Zonal-Mean2.jpg","link":"https:\/\/www.esri.com\/arcgis-blog\/products\/arcgis-living-atlas\/imagery\/learn-to-map-urban-heat-with-landsat\/open-zonal-mean2","alt":"","author":"7071","description":"","caption":"","name":"open-zonal-mean2","status":"inherit","uploaded_to":2728972,"date":"2025-07-13 03:46:32","modified":"2025-07-13 03:46:32","menu_order":0,"mime_type":"image\/jpeg","type":"image","subtype":"jpeg","icon":"https:\/\/www.esri.com\/arcgis-blog\/wp-includes\/images\/media\/default.png","width":300,"height":497,"sizes":{"thumbnail":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Open-Zonal-Mean2-213x200.jpg","thumbnail-width":213,"thumbnail-height":200,"medium":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Open-Zonal-Mean2.jpg","medium-width":158,"medium-height":261,"medium_large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Open-Zonal-Mean2.jpg","medium_large-width":300,"medium_large-height":497,"large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Open-Zonal-Mean2.jpg","large-width":300,"large-height":497,"1536x1536":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Open-Zonal-Mean2.jpg","1536x1536-width":300,"1536x1536-height":497,"2048x2048":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Open-Zonal-Mean2.jpg","2048x2048-width":300,"2048x2048-height":497,"card_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Open-Zonal-Mean2-281x465.jpg","card_image-width":281,"card_image-height":465,"wide_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Open-Zonal-Mean2.jpg","wide_image-width":300,"wide_image-height":497}},"image_position":"left-center","orientation":"horizontal","hyperlink":""},{"acf_fc_layout":"content","content":"<p><strong>Step 2<\/strong>: With the input parameters panel now open, enter the required information and run the RFT. Select &#8220;Monterrey SIUHI Data Aggregation&#8221; as your input Raster, provide an output name of &#8220;<strong>Monterrey SIUHI Zonal Mean<\/strong>&#8220;, click <strong>Estimate credits<\/strong> and then <strong>Run<\/strong>.<\/p>\n"},{"acf_fc_layout":"image","image":{"ID":2896252,"id":2896252,"title":"Zonal Mean RFT parameters panel3","filename":"Zonal-Mean-RFT-parameters-panel3.jpg","filesize":40839,"url":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Zonal-Mean-RFT-parameters-panel3.jpg","link":"https:\/\/www.esri.com\/arcgis-blog\/products\/arcgis-living-atlas\/imagery\/learn-to-map-urban-heat-with-landsat\/zonal-mean-rft-parameters-panel3","alt":"","author":"7071","description":"","caption":"","name":"zonal-mean-rft-parameters-panel3","status":"inherit","uploaded_to":2728972,"date":"2025-07-13 03:54:48","modified":"2025-07-13 03:54:48","menu_order":0,"mime_type":"image\/jpeg","type":"image","subtype":"jpeg","icon":"https:\/\/www.esri.com\/arcgis-blog\/wp-includes\/images\/media\/default.png","width":350,"height":733,"sizes":{"thumbnail":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Zonal-Mean-RFT-parameters-panel3-213x200.jpg","thumbnail-width":213,"thumbnail-height":200,"medium":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Zonal-Mean-RFT-parameters-panel3.jpg","medium-width":125,"medium-height":261,"medium_large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Zonal-Mean-RFT-parameters-panel3.jpg","medium_large-width":350,"medium_large-height":733,"large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Zonal-Mean-RFT-parameters-panel3.jpg","large-width":350,"large-height":733,"1536x1536":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Zonal-Mean-RFT-parameters-panel3.jpg","1536x1536-width":350,"1536x1536-height":733,"2048x2048":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Zonal-Mean-RFT-parameters-panel3.jpg","2048x2048-width":350,"2048x2048-height":733,"card_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Zonal-Mean-RFT-parameters-panel3-222x465.jpg","card_image-width":222,"card_image-height":465,"wide_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Zonal-Mean-RFT-parameters-panel3.jpg","wide_image-width":350,"wide_image-height":733}},"image_position":"left-center","orientation":"horizontal","hyperlink":""},{"acf_fc_layout":"content","content":"<p><strong>Step 3<\/strong>: The result of Part 2 &#8211; Zonal Mean is a single band raster containing the mean surface temperature value of all vegetated pixels within the AOI . When processing completes, the resulting hosted imagery layer is saved to your organization and displayed in your map. Click <strong>Save<\/strong> to save your map. You are now ready for <strong>Analysis Part 3: Surface Heat Index<\/strong>.<\/p>\n<h1 id=\"calcsiuhi\"><\/h1>\n<p><img decoding=\"async\" src=\"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2020\/03\/breakgray.png\" alt=\"\" \/><\/p>\n<h3><strong>Analysis Part 3: Surface Heat Index<\/strong><\/h3>\n<p>The next part of the workflow is to calculate a surface heat index using the outputs from Part 1 and Part 2. This RFT uses the Extract Band, Band Arithmetic, Clip, and Zonal Statistics Raster Functions. The steps include:<\/p>\n<ul>\n<li>Calculate the difference between the seasonal mean surface temperature values from Part 1 and the vegetated mean value from Step 2.<\/li>\n<\/ul>\n<p>The output is a per pixel index of surface temperature deviation from the vegetated mean surface temperature across the AOI. Relatively larger values indicative of more severe heat island effect.<\/p>\n<p>&nbsp;<\/p>\n<p><strong>Step 1<\/strong>: Open the first RFT.<\/p>\n<ol>\n<li>Within the <strong>Analysis<\/strong> options, open the <strong>Raster Function Templates<\/strong> panel.<\/li>\n<li>Click the three dots on <strong>Landsat Level-2 SIUHI &#8211; Part 3 of 3 &#8211; Surface Heat Index.<\/strong><\/li>\n<li>Select <strong>Open<\/strong>.<\/li>\n<\/ol>\n"},{"acf_fc_layout":"image","image":{"ID":2896302,"id":2896302,"title":"Open Surface Heat Index2","filename":"Open-Surface-Heat-Index2.jpg","filesize":29669,"url":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Open-Surface-Heat-Index2.jpg","link":"https:\/\/www.esri.com\/arcgis-blog\/products\/arcgis-living-atlas\/imagery\/learn-to-map-urban-heat-with-landsat\/open-surface-heat-index2","alt":"","author":"7071","description":"","caption":"","name":"open-surface-heat-index2","status":"inherit","uploaded_to":2728972,"date":"2025-07-13 04:41:51","modified":"2025-07-13 04:41:51","menu_order":0,"mime_type":"image\/jpeg","type":"image","subtype":"jpeg","icon":"https:\/\/www.esri.com\/arcgis-blog\/wp-includes\/images\/media\/default.png","width":300,"height":505,"sizes":{"thumbnail":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Open-Surface-Heat-Index2-213x200.jpg","thumbnail-width":213,"thumbnail-height":200,"medium":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Open-Surface-Heat-Index2.jpg","medium-width":155,"medium-height":261,"medium_large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Open-Surface-Heat-Index2.jpg","medium_large-width":300,"medium_large-height":505,"large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Open-Surface-Heat-Index2.jpg","large-width":300,"large-height":505,"1536x1536":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Open-Surface-Heat-Index2.jpg","1536x1536-width":300,"1536x1536-height":505,"2048x2048":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Open-Surface-Heat-Index2.jpg","2048x2048-width":300,"2048x2048-height":505,"card_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Open-Surface-Heat-Index2-276x465.jpg","card_image-width":276,"card_image-height":465,"wide_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Open-Surface-Heat-Index2.jpg","wide_image-width":300,"wide_image-height":505}},"image_position":"left-center","orientation":"horizontal","hyperlink":""},{"acf_fc_layout":"content","content":"<p><strong>Step 2<\/strong>: With the input parameters panel now open, enter the required information and run the RFT.<\/p>\n<ol>\n<li>Select &#8220;<strong>Monterrey SIUHI Zonal Mean<\/strong>&#8221; as your input <strong>Zonal Mean Raster.<\/strong><\/li>\n<li>Select &#8220;<strong>Monterrey SUIHI Data Aggregation<\/strong>&#8221; as your <strong>Cloud Free Mean Raster.<\/strong><\/li>\n<li>Provide an output name of &#8220;<strong>Monterrey SIUHI Surface Heat Index<\/strong>&#8220;.<\/li>\n<li>Click <strong>Estimate credits.<\/strong><\/li>\n<li>Click <strong>Run<\/strong>.<\/li>\n<\/ol>\n"},{"acf_fc_layout":"image","image":{"ID":2896362,"id":2896362,"title":"Surface Heat Index RFT parameters panel2","filename":"Surface-Heat-Index-RFT-parameters-panel2.jpg","filesize":48250,"url":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Surface-Heat-Index-RFT-parameters-panel2.jpg","link":"https:\/\/www.esri.com\/arcgis-blog\/products\/arcgis-living-atlas\/imagery\/learn-to-map-urban-heat-with-landsat\/surface-heat-index-rft-parameters-panel2","alt":"","author":"7071","description":"","caption":"","name":"surface-heat-index-rft-parameters-panel2","status":"inherit","uploaded_to":2728972,"date":"2025-07-13 05:31:02","modified":"2025-07-13 05:31:02","menu_order":0,"mime_type":"image\/jpeg","type":"image","subtype":"jpeg","icon":"https:\/\/www.esri.com\/arcgis-blog\/wp-includes\/images\/media\/default.png","width":350,"height":842,"sizes":{"thumbnail":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Surface-Heat-Index-RFT-parameters-panel2-213x200.jpg","thumbnail-width":213,"thumbnail-height":200,"medium":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Surface-Heat-Index-RFT-parameters-panel2.jpg","medium-width":108,"medium-height":261,"medium_large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Surface-Heat-Index-RFT-parameters-panel2.jpg","medium_large-width":350,"medium_large-height":842,"large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Surface-Heat-Index-RFT-parameters-panel2.jpg","large-width":350,"large-height":842,"1536x1536":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Surface-Heat-Index-RFT-parameters-panel2.jpg","1536x1536-width":350,"1536x1536-height":842,"2048x2048":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Surface-Heat-Index-RFT-parameters-panel2.jpg","2048x2048-width":350,"2048x2048-height":842,"card_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Surface-Heat-Index-RFT-parameters-panel2-193x465.jpg","card_image-width":193,"card_image-height":465,"wide_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Surface-Heat-Index-RFT-parameters-panel2.jpg","wide_image-width":350,"wide_image-height":842}},"image_position":"left-center","orientation":"horizontal","hyperlink":""},{"acf_fc_layout":"content","content":"<p><strong>Step 3<\/strong>: The output of Part 3 &#8211; Surface Heat Index is a single band raster with a per pixel surface temperature deviation from the vegetated mean surface temperature across the AOI. Larger values indicate more severe the heat island effect. When processing completes, the resulting hosted imagery layer is saved to your organization and displayed in your map. Click <strong>Save<\/strong> to save your map. You are now ready to assess the results.<\/p>\n"},{"acf_fc_layout":"image","image":{"ID":2896622,"id":2896622,"title":"Surface Heat Index output","filename":"Surface-Heat-Index-output-scaled.jpg","filesize":139047,"url":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Surface-Heat-Index-output-scaled.jpg","link":"https:\/\/www.esri.com\/arcgis-blog\/products\/arcgis-living-atlas\/imagery\/learn-to-map-urban-heat-with-landsat\/surface-heat-index-output","alt":"","author":"7071","description":"","caption":"","name":"surface-heat-index-output","status":"inherit","uploaded_to":2728972,"date":"2025-07-13 21:34:14","modified":"2025-07-13 21:34:14","menu_order":0,"mime_type":"image\/jpeg","type":"image","subtype":"jpeg","icon":"https:\/\/www.esri.com\/arcgis-blog\/wp-includes\/images\/media\/default.png","width":2560,"height":1094,"sizes":{"thumbnail":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Surface-Heat-Index-output-213x200.jpg","thumbnail-width":213,"thumbnail-height":200,"medium":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Surface-Heat-Index-output-scaled.jpg","medium-width":464,"medium-height":198,"medium_large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Surface-Heat-Index-output-scaled.jpg","medium_large-width":768,"medium_large-height":328,"large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Surface-Heat-Index-output-scaled.jpg","large-width":1920,"large-height":821,"1536x1536":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Surface-Heat-Index-output-1536x657.jpg","1536x1536-width":1536,"1536x1536-height":657,"2048x2048":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Surface-Heat-Index-output-2048x875.jpg","2048x2048-width":2048,"2048x2048-height":875,"card_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Surface-Heat-Index-output-826x353.jpg","card_image-width":826,"card_image-height":353,"wide_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Surface-Heat-Index-output-1920x821.jpg","wide_image-width":1920,"wide_image-height":821}},"image_position":"left-center","orientation":"horizontal","hyperlink":""},{"acf_fc_layout":"content","content":"<h1 id=\"results\"><\/h1>\n<p><img decoding=\"async\" src=\"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2020\/03\/breakgray.png\" alt=\"\" \/><\/p>\n<h3><strong>Assess the results<\/strong><\/h3>\n<p>By default, the Surface Heat Index layer displays as grey scale. To help visualize the layer, and distinguish surface heat severity across the AOI, you can apply a stretch with a color ramp.<\/p>\n<p>&nbsp;<\/p>\n<p><strong>Step 1<\/strong>:\u00a0 Go to the <strong>Styles<\/strong> tab and select Stretch <strong>Style Options<\/strong>.<\/p>\n"},{"acf_fc_layout":"image","image":{"ID":2896722,"id":2896722,"title":"Stretch styles options2","filename":"Stretch-styles-options2.jpg","filesize":42932,"url":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Stretch-styles-options2.jpg","link":"https:\/\/www.esri.com\/arcgis-blog\/products\/arcgis-living-atlas\/imagery\/learn-to-map-urban-heat-with-landsat\/stretch-styles-options2","alt":"","author":"7071","description":"","caption":"","name":"stretch-styles-options2","status":"inherit","uploaded_to":2728972,"date":"2025-07-13 23:01:08","modified":"2025-07-13 23:01:08","menu_order":0,"mime_type":"image\/jpeg","type":"image","subtype":"jpeg","icon":"https:\/\/www.esri.com\/arcgis-blog\/wp-includes\/images\/media\/default.png","width":350,"height":513,"sizes":{"thumbnail":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Stretch-styles-options2-213x200.jpg","thumbnail-width":213,"thumbnail-height":200,"medium":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Stretch-styles-options2.jpg","medium-width":178,"medium-height":261,"medium_large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Stretch-styles-options2.jpg","medium_large-width":350,"medium_large-height":513,"large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Stretch-styles-options2.jpg","large-width":350,"large-height":513,"1536x1536":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Stretch-styles-options2.jpg","1536x1536-width":350,"1536x1536-height":513,"2048x2048":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Stretch-styles-options2.jpg","2048x2048-width":350,"2048x2048-height":513,"card_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Stretch-styles-options2-317x465.jpg","card_image-width":317,"card_image-height":465,"wide_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Stretch-styles-options2.jpg","wide_image-width":350,"wide_image-height":513}},"image_position":"left-center","orientation":"horizontal","hyperlink":""},{"acf_fc_layout":"content","content":"<p><strong>Step 2<\/strong>:\u00a0 Select a color ramp.<\/p>\n<ol>\n<li>Within the <strong>Style options<\/strong>, click on <strong>Color scheme.<\/strong><\/li>\n<li>Click <strong>Colors<\/strong> to see a list of available color ramps.<\/li>\n<li>In this case choose &#8216;<strong>Yellow to Dark Red<\/strong>&#8216;.<\/li>\n<li>Click <strong>Done<\/strong>.<\/li>\n<\/ol>\n"},{"acf_fc_layout":"image","image":{"ID":2896712,"id":2896712,"title":"select color ramp2","filename":"select-color-ramp2.jpg","filesize":40557,"url":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/select-color-ramp2.jpg","link":"https:\/\/www.esri.com\/arcgis-blog\/products\/arcgis-living-atlas\/imagery\/learn-to-map-urban-heat-with-landsat\/select-color-ramp2","alt":"","author":"7071","description":"","caption":"","name":"select-color-ramp2","status":"inherit","uploaded_to":2728972,"date":"2025-07-13 23:00:56","modified":"2025-07-13 23:00:56","menu_order":0,"mime_type":"image\/jpeg","type":"image","subtype":"jpeg","icon":"https:\/\/www.esri.com\/arcgis-blog\/wp-includes\/images\/media\/default.png","width":600,"height":473,"sizes":{"thumbnail":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/select-color-ramp2-213x200.jpg","thumbnail-width":213,"thumbnail-height":200,"medium":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/select-color-ramp2.jpg","medium-width":331,"medium-height":261,"medium_large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/select-color-ramp2.jpg","medium_large-width":600,"medium_large-height":473,"large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/select-color-ramp2.jpg","large-width":600,"large-height":473,"1536x1536":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/select-color-ramp2.jpg","1536x1536-width":600,"1536x1536-height":473,"2048x2048":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/select-color-ramp2.jpg","2048x2048-width":600,"2048x2048-height":473,"card_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/select-color-ramp2-590x465.jpg","card_image-width":590,"card_image-height":465,"wide_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/select-color-ramp2.jpg","wide_image-width":600,"wide_image-height":473}},"image_position":"left-center","orientation":"horizontal","hyperlink":""},{"acf_fc_layout":"content","content":"<p><strong>Step 3<\/strong>: Your output is now colorized. With the chosen color ramp, dark red represents the highest surface heat severity within the AOI.<\/p>\n"},{"acf_fc_layout":"image","image":{"ID":2896732,"id":2896732,"title":"colorized surface heat index","filename":"colorized-surface-heat-index.jpg","filesize":64678,"url":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/colorized-surface-heat-index.jpg","link":"https:\/\/www.esri.com\/arcgis-blog\/products\/arcgis-living-atlas\/imagery\/learn-to-map-urban-heat-with-landsat\/colorized-surface-heat-index","alt":"","author":"7071","description":"","caption":"","name":"colorized-surface-heat-index","status":"inherit","uploaded_to":2728972,"date":"2025-07-13 23:13:20","modified":"2025-07-13 23:13:20","menu_order":0,"mime_type":"image\/jpeg","type":"image","subtype":"jpeg","icon":"https:\/\/www.esri.com\/arcgis-blog\/wp-includes\/images\/media\/default.png","width":851,"height":519,"sizes":{"thumbnail":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/colorized-surface-heat-index-213x200.jpg","thumbnail-width":213,"thumbnail-height":200,"medium":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/colorized-surface-heat-index.jpg","medium-width":428,"medium-height":261,"medium_large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/colorized-surface-heat-index.jpg","medium_large-width":768,"medium_large-height":468,"large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/colorized-surface-heat-index.jpg","large-width":851,"large-height":519,"1536x1536":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/colorized-surface-heat-index.jpg","1536x1536-width":851,"1536x1536-height":519,"2048x2048":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/colorized-surface-heat-index.jpg","2048x2048-width":851,"2048x2048-height":519,"card_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/colorized-surface-heat-index-762x465.jpg","card_image-width":762,"card_image-height":465,"wide_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/colorized-surface-heat-index.jpg","wide_image-width":851,"wide_image-height":519}},"image_position":"center","orientation":"horizontal","hyperlink":""},{"acf_fc_layout":"content","content":"<p>This output layer can shared with your organization or publicly. It can be used in web applications for further analysis such as impact assessments and heat mitigation planning.<\/p>\n<p>Some next steps for additional analysis could include one or more of the following:<\/p>\n<ul>\n<li>Running this workflow over time to show year over year heat trends for your area(s) of interest.<\/li>\n<li><a href=\"https:\/\/doc.arcgis.com\/en\/arcgis-online\/analyze\/remap-function.htm\">Remap<\/a> the output Surface Heat Index layer to heat severity classes, <a href=\"https:\/\/doc.arcgis.com\/en\/arcgis-online\/analyze\/convert-raster-to-feature-mv-ra.htm\">Convert Raster to Feature<\/a>, and then enrich that feature layer with information such as population data using <a href=\"https:\/\/doc.arcgis.com\/en\/arcgis-online\/analyze\/zonal-statistics-mv-ra.htm\">Zonal Statistics<\/a>.<\/li>\n<li>Remap the output Surface Heat Index layer to heat severity classes and use that classified raster to enrich local census tracts with Zonal Statistics.<\/li>\n<\/ul>\n<p>The following example dashboard was created combining a couple of the examples from above. We looked at Dallas, TX and created annual urban heat maps from 1985 to present to analyze trends over time by census tract. We also analyzed how heat severity is impacting different demographics across census tracts.<\/p>\n<p><a href=\"https:\/\/arcgis-content.maps.arcgis.com\/apps\/dashboards\/f5ba530a6d044f9094af9dd0e2c54e3f\"> Temporal Surface Heat Island Dashboard &#8211; enriched for Dallas, Texas<\/a><\/p>\n<p><strong>Historic<\/strong> tab<\/p>\n"},{"acf_fc_layout":"image","image":{"ID":2896862,"id":2896862,"title":"Dallas Dashboard - historic tab2","filename":"Dallas-Dashboard-historic-tab2.jpg","filesize":280837,"url":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Dallas-Dashboard-historic-tab2.jpg","link":"https:\/\/www.esri.com\/arcgis-blog\/products\/arcgis-living-atlas\/imagery\/learn-to-map-urban-heat-with-landsat\/dallas-dashboard-historic-tab2","alt":"","author":"7071","description":"","caption":"","name":"dallas-dashboard-historic-tab2","status":"inherit","uploaded_to":2728972,"date":"2025-07-14 05:40:41","modified":"2025-07-14 05:40:41","menu_order":0,"mime_type":"image\/jpeg","type":"image","subtype":"jpeg","icon":"https:\/\/www.esri.com\/arcgis-blog\/wp-includes\/images\/media\/default.png","width":1282,"height":698,"sizes":{"thumbnail":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Dallas-Dashboard-historic-tab2-213x200.jpg","thumbnail-width":213,"thumbnail-height":200,"medium":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Dallas-Dashboard-historic-tab2.jpg","medium-width":464,"medium-height":253,"medium_large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Dallas-Dashboard-historic-tab2.jpg","medium_large-width":768,"medium_large-height":418,"large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Dallas-Dashboard-historic-tab2.jpg","large-width":1282,"large-height":698,"1536x1536":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Dallas-Dashboard-historic-tab2.jpg","1536x1536-width":1282,"1536x1536-height":698,"2048x2048":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Dallas-Dashboard-historic-tab2.jpg","2048x2048-width":1282,"2048x2048-height":698,"card_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Dallas-Dashboard-historic-tab2-826x450.jpg","card_image-width":826,"card_image-height":450,"wide_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Dallas-Dashboard-historic-tab2.jpg","wide_image-width":1282,"wide_image-height":698}},"image_position":"center","orientation":"horizontal","hyperlink":""},{"acf_fc_layout":"content","content":"<p><strong>At Risk<\/strong>\u00a0 tab<\/p>\n"},{"acf_fc_layout":"image","image":{"ID":2896872,"id":2896872,"title":"Dallas Dashboard - at risk tab2","filename":"Dallas-Dashboard-at-risk-tab2.jpg","filesize":249155,"url":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Dallas-Dashboard-at-risk-tab2.jpg","link":"https:\/\/www.esri.com\/arcgis-blog\/products\/arcgis-living-atlas\/imagery\/learn-to-map-urban-heat-with-landsat\/dallas-dashboard-at-risk-tab2","alt":"","author":"7071","description":"","caption":"","name":"dallas-dashboard-at-risk-tab2","status":"inherit","uploaded_to":2728972,"date":"2025-07-14 05:41:04","modified":"2025-07-14 05:41:04","menu_order":0,"mime_type":"image\/jpeg","type":"image","subtype":"jpeg","icon":"https:\/\/www.esri.com\/arcgis-blog\/wp-includes\/images\/media\/default.png","width":1282,"height":698,"sizes":{"thumbnail":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Dallas-Dashboard-at-risk-tab2-213x200.jpg","thumbnail-width":213,"thumbnail-height":200,"medium":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Dallas-Dashboard-at-risk-tab2.jpg","medium-width":464,"medium-height":253,"medium_large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Dallas-Dashboard-at-risk-tab2.jpg","medium_large-width":768,"medium_large-height":418,"large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Dallas-Dashboard-at-risk-tab2.jpg","large-width":1282,"large-height":698,"1536x1536":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Dallas-Dashboard-at-risk-tab2.jpg","1536x1536-width":1282,"1536x1536-height":698,"2048x2048":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Dallas-Dashboard-at-risk-tab2.jpg","2048x2048-width":1282,"2048x2048-height":698,"card_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Dallas-Dashboard-at-risk-tab2-826x450.jpg","card_image-width":826,"card_image-height":450,"wide_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Dallas-Dashboard-at-risk-tab2.jpg","wide_image-width":1282,"wide_image-height":698}},"image_position":"center","orientation":"horizontal","hyperlink":""},{"acf_fc_layout":"content","content":"<p>Look for a follow up blog tutorial to describe how we created this dashboard.<\/p>\n"}],"related_articles":"","show_article_image":false,"card_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2025\/03\/Learn-to-map-urban-heat-card2-826x465-1.png","wide_image":false},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v25.9 (Yoast SEO v25.9) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Learn to map urban heat islands with Landsat imagery<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.esri.com\/arcgis-blog\/products\/arcgis-living-atlas\/imagery\/learn-to-map-urban-heat-with-landsat\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Learn to map urban heat islands with Landsat imagery\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.esri.com\/arcgis-blog\/products\/arcgis-living-atlas\/imagery\/learn-to-map-urban-heat-with-landsat\" \/>\n<meta property=\"og:site_name\" content=\"ArcGIS Blog\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/esrigis\/\" \/>\n<meta property=\"article:modified_time\" content=\"2026-01-06T22:24:23+00:00\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:site\" content=\"@ESRI\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"16 minutes\" \/>\n<script type=\"application\/ld+json\" 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