View source for UK-England Elevation Model (LIDAR)

[[Category: Online Data]][[Category: Digital Elevation Models]]
[[Image:England_Map_10m_Composite.png|right|thumb|400px|Coverage for the DTM model for England – 10 m grid.]][[File:windfarms_at_goole.png|right|thumb|400px|Wind Farms at Goole, England, with 10m Grid Data.]]
== Introduction ==
The UK - England Elevation Model (LIDAR) in 10m grid resolution is a digital terrain model (DTM) produced from higher resolution LiDAR scans originally obtained from the Environment Agency. The original model at 2m resolution is named ‘LIDAR Composite DTM 2019 - 2m’. The derived elevation model delivered with windPRO is at 10m resolution (made with bi-linear interpolation). For wind energy modelling, we typically need a more coarse model (5-10m grid resolution) for the data to be operational for the large areas needed. Coverage for the data is approximately 85% of England.

=== Dataset Overview ===
* '''Spatial Coverage:''' 85% of the UK-England territory
* '''Resolution:''' 10 m 
* '''Data-type:''' [[:Category%3ADigital_Elevation_Models#What_type_of_elevation_model.3F_DEM.2C_DSM_and_DTM.3F|Digital Terrain Model (DTM)]]
* '''Coordinate system (original data):''' 
** Horizontal: OSGB36 British National Grid (EPSG: 27700)
** Vertical: Elevations recorded above Ordnance Datum Newlyn
* '''Version:''' Data downloaded in December 2020. 
* '''Vertical Accuracy:''' N/A (but as LiDAR data in the centimeter-range)
* '''Survey Period:''' The composite contains data from surveys undertaken from 1998-03-12 until 2019-09-01.

== Usage Notes ==
# Since only 85% of the territory is covered by the LiDAR scans - you may need to void-fill some areas. If you download the data into an elevation grid object, these void-areas can easily be filled with other readily available sources such as the 50m gridded data from [[Land-Form_PANORAMA|OS Land Form]] or [[UK-OS_Terrain_50|OS Terrain 50]].
# Higher resolution data exist for selected areas in the region based on more recent LiDAR surveys: These are in resolutions from 0.25m to 2m – and may be accessed directly from the UK Open Data web-site (see link below).

== Availability from within windPRO ==
The data are available directly from within windPRO in 10-meter grid resolution. The data can be accessed from the online-services in the following objects: 
* Line Object (with purpose set to height contour lines) 
* Elevation Grid Object

== License and Attribution ==
The product belongs to the open geospatial data of the Environmental Agency. The data are licensed under a under a ‘Open Government License for Public Sector Information v. 3.0’. A copy of this license is available from The National Archices, [https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/ here]. This license is compatible with the Creative Commons Attribution License 4.0. Please use the following attribution when using this dataset: 
<pre>
License: Contains public sector information licensed under the Open Government Licence v3.0. Contains Environment Agency Data © 2021. 
Adapted and distributed by EMD and windPRO.
</pre>

== Acknowledgement ==
* The Environment Agency and the public of England are thanked for producing this digital elevation dataset – and disseminating it in the public domain and thus for aiding the development of renewable energy.

== External Links ==
* Geodata from the Environment Agency - [https://data.gov.uk/search?filters%5Bpublisher%5D=Environment+Agency here].
* LIDAR Composite DTM 2019 - 2m: [https://data.gov.uk/dataset/67639c1b-ac0e-492a-abba-02ed436f826f/lidar-composite-dtm-2019-2m here].
* LIDAR Composite DTM 2019 - 10m: [https://data.gov.uk/dataset/8311f42d-bddd-4cd4-98a3-e543de5be4cb/lidar-composite-dtm-2019-10m here].