LIDAR Composite DSM 2020 - 2m

Published by:
Environment Agency
Last updated:
21 March 2023
Topic:
Not added
Licence:
Other Licence
View licence information

Summary

PLEASE NOTE: This dataset has been retired. A new version of the data is available here: https://environment.data.gov.uk/dataset/f083c5dc-504f-4428-9811-a1b2519fa279

The LIDAR Composite DSM (Digital Surface Model) is a raster elevation model covering >93% 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. Where repeat surveys have been undertaken the newest, best resolution data is used. Where data was resampled a bilinear interpolation was used before being merged.

The 2020 LIDAR Composite contains surveys undertaken between 6th June 2000 and 1st September 2020. Please refer to the survey index files which shows, for any location, what Time Stamped survey or National LIDAR Programme block went into the production of the LIDAR composite for a specific location.

The DSM (Digital Surface Model) is produced from the last return LIDAR signal and includes heights of objects, such as vehicles, buildings and vegetation, as well as the terrain surface. Available to download as ASCII files in 5km grids, data is presented in metres, referenced to Ordinance Survey Newlyn, using the OSTN’15 transformation. All LIDAR data has a vertical accuracy of +/-15cm RMSE. A tinted shaded relief, which is an image showing what LIDAR looks like when loaded into specialist software, is also available as a WMS feed. You can also download survey index files which shows, for any location, what Time Stamped survey went into the production of the LIDAR composite.

Light Detection and Ranging (LIDAR) is an airborne mapping technique, which uses a laser to measure the distance between the aircraft and the ground. Up to 500,000 measurements per second are made of the ground, allowing highly detailed terrain models to be generated at spatial resolutions of between 25cm and 2 metres. The Environment Agency’s open data LIDAR archives includes the Point Cloud data, and derived raster surface models of survey specific areas dating back to 1998 and composites of the best data available in any location.

This metadata record is for Approval for Access product AfA458.

Attribution statement: (c) Environment Agency copyright and/or database right 2021. All rights reserved. Attribution Statement: © Environment Agency copyright and/or database right 2022. All rights reserved.

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Data links

Link to the data Format File added Data preview
Survey Data Catalogue FAQs N/A 21 March 2023 Not available
Metadata Index Catalogues - WFS N/A 21 March 2023 Not available
Metadata Index Catalogues - WMS N/A 21 March 2023 Not available
Metadata Shapefile Index Catalogues - Download N/A 21 March 2023 Not available

Additional information

View additional metadata
Added to data.gov.uk
2023-03-16
Access contraints
There are no public access constraints to this data. Use of this data is subject to the licence identified.
Harvest GUID
e883a9c0-2444-47e6-93db-e5b7fab0adf2
Extent
Latitude: 55.816° to 49.943°
Longitude: -6.236° to 2.072°
Spatial reference system
http://www.opengis.net/def/crs/EPSG/0/27700
Dataset reference date
2021-06-01 (creation)
2021-06-01 (revision)
Frequency of update
notPlanned
Responsible party
Environment Agency (pointOfContact)
ISO 19139 resource type
dataset
Metadata language
eng
Source Metadata
XML
HTML

Contact

Enquiries

Access DSP Support pages: https://environment.data.gov.uk/support

Freedom of Information (FOI) requests

National Customer Contact Centre Freedom of information requests for this dataset

Licence information

Open Government Licence