Nevergeomatics_data@environment-agency.gov.ukEnvironment AgencyEnvironment AgencySK07ne_DTM_2m.tif2021-04-09T16:32:58SK07neThe LIDAR Composite DTM (Digital Terrain Model) is a raster elevation model covering >90% of England at 2m spatial resolution. Produced by the Environment Agency in 2020 this dataset is derived from a combination of our Time Stamped archive and National LIDAR Programme which has been merged and re-sampled to give the best possible coverage. The LIDAR Composite contains surveys undertaken between 12th March 1998 and 1st September 2020. Where repeat surveys have been undertaken the newest, best resolution data is used. Where data was resampled a bilinear interpolation was used before being merging. Please refer to the supplied survey index shapefile which shows for any location, what LIDAR data went into the production of the LIDAR composite for a specific location. The survey index shapefile contains informaiton including the exact date of survey and source resolution of data. The DTM (Digital Terrain Model) is produced from the last return LIDAR pulse. We remove surface objects from the Digital Surface Model (DSM), using bespoke algorithms and manual editing of the data, to produce a terrain model of just the surface. The elevation are presented in metres referenced to Ordinance Survey Newlyn, using the OSTN 15 and OSGM 15 transformation models. The LIDAR elevations have a vertical accuracy of +/-15cm RMSE.LIDAR Composite 20202mDigital Terrain Model (DTM)Last ReturnSK07neLIDARElevationOSGM'15OSTN'15Environment AgencyOpen DataEnvironment Agency copyright and/or database right 2020. All rights reserved.Data is available to reuse under the Open Government Licence. For further information please refer to: http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/ When re-using these data you must include the following attribute statement: 'Environment Agency copyright and/or database right 2020. All rights reserved.''This raster forms part of the LIDAR Composite 2020 2m Digital Terrain Model (DTM) produced by the Environment Agency.2021-04-092021-04-091.0editor:arcpy_metadataISO19139ISO 19139 Metadata Implementation SpecificationGeotiff