ArcGIS Living Atlas

England & Wales high resolution elevation in Esri World Elevation Services

Recently, an extensive collection of Lidar data of England and Wales was made available by Environment agency of England and Natural Resources Wales respectively.  At 2 meters resolution (cell size), the lidar derived DTM (bare earth) covers nearly three quarters (~70%) of England and Wales. The data mainly covers flood plains, coastal zones and urban areas and will aid in improving the quality of flood risk modeling.

We are excited to make this high-resolution collection available in Esri World Elevation services.  With this update, there is now 25 times more detail in these countries.

Pagham coastal area in South East England depicted with 2 meter Lidar derived digital terrain model

Vindolanda Roman fort depicted with 2 meter Lidar derived digital terrain model

The world elevation image services (Terrain and TopoBathy), which provide online access to a global collection of multi-resolution and multisource elevation data, can be used for visualization (such as multi-directional hillshadetinted hillshade) and analysis. In ArcGIS for Desktop, a temporary layer can be generated using Make Image Server Layer  tool to use as an input in GP tools to perform the analysis. The parameters such as the extent, cell size, query and output coordinate system can be defined using Make Image Server Layer  tool to produce the output layer. A query will select a subset of items within the image service thus restricting the analysis to a particular data source available in these services. For example, a definition query of “ProductName” = ‘England_DTM2m’ will filter data pertaining to England 2m DTM only.

These global layers are available free of cost to every ArcGIS Organizational account user. The updates will also be rolled out to world elevation derivative products – Terrain 3D and World Hillshade.

For more information about the coverage of the World Elevation services check our Elevation coverage map. Additionally, to contribute high-resolution elevation data to Living Atlas of the World, check Esri Community Maps for Elevation program.

About

Rajinder has more than 15 years of experience in GIS and Remote Sensing. He came to Esri about 11 years ago and has worked with various teams in different capacities. In his current role, he leads the community elevation program at Esri and has wide experience in cartographic visualization, image processing, databases and geo-processing. By virtue of his strong research interest in terrain visualization, Rajinder has developed a multi-directional hillshade (esriurl.com/NextGenHillshade) algorithm to improve terrain visualization in Esri basemaps that is available as part of world elevation layers. He has also developed a fusion technique (esriurl.com/NAGIfusion) which maintains details and colors when integrating colored rasters with hillshades. Rajinder holds a Master of Science degree in Geoinformatics from the International Institute for Geo-Information Science and Earth Observation (ITC), The Netherlands, and a Bachelor of Science degree in Urban & Regional Planning from GND University, Amritsar, India.

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