Identification

Title

LIDAR Composite First Return Digital Surface Model (FZ_DSM) - 2m

Alternative title(s)

Abstract

The LIDAR Composite First Return DSM (Digital Surface Model) is a raster elevation model covering ~99% of England at 2m spatial resolution. The first return DSM is produced from the first or only laser pulse returned to the sensor and includes heights of objects, such as vehicles, buildings and vegetation, as well as the terrain surface where the first or only return was the ground. Produced by the Environment Agency in 2022, the first return DSM is derived from data captured as part of our national LIDAR programme between 11 November 2016 and 5th May 2022. This programme divided England into ~300 blocks for survey over continuous winters from 2016 onwards. These surveys are merged together to create the first return LIDAR composite using a feathering technique along the overlaps to remove any small differences in elevation between surveys. Please refer to the metadata index catalgoues which show for any location which survey was used in the production of the LIDAR composite. The first return DSM will not match in coverage or extent of the LIDAR composite last return digital surface model (LZ_DSM) as the last return DSM composite is produced from both the national LIDAR programme and Timeseries surveys. The data is available to download as GeoTiff rasters in 5km tiles aligned to the OS National grid. The data is presented in metres, referenced to Ordinance Survey Newlyn and using the OSTN’15 transformation method. All individual LIDAR surveys going into the production of the composite had a vertical accuracy of +/-15cm RMSE. Attribution statement: © Environment Agency copyright and/or database right 2022. All rights reserved.

Resource type

dataset

Resource locator

https://environment.data.gov.uk/DefraDataDownload/?Mode=survey

protocol: http

description: Download the survey data

https://environment.data.gov.uk/explore/9f0fa3fc-a860-4729-adc9-47fe53f658d0?download=true

protocol: http

description: Download the coverage metadata files

https://environment.data.gov.uk/spatialdata/lidar-composite-digital-surface-model-first-return-dsm-2m/wms?request=GetCapabilities&service=WMS&version=1.3.0

protocol: http

description: LIDAR Composite First Return Digital Survey Model (FZ_DSM) - 2m - WMS

https://environment.data.gov.uk/spatialdata/lidar-composite-digital-surface-model-first-return-dsm-2m/wcs?request=GetCapabilities&service=WCS&version=2.0.1

protocol: http

description: LIDAR Composite First Return Digital Survey Model (FZ_DSM) - 2m - WCS

https://environment.data.gov.uk/spatialdata/survey-index-files/wms?request=GetCapabilities&service=WMS

protocol: http

description: Metadata Survey Index Catalogues - WMS

https://environment.data.gov.uk/spatialdata/survey-index-files/wfs?request=GetCapabilities&service=WFS

protocol: http

description: Metadata Survey Index Catalogues - WFS

https://support.environment.data.gov.uk/space/DPK/15827049/Survey+Data+Catalogue

protocol: http

description: Survey Data FAQs

Unique resource identifier

code

54167602-36c8-4b2b-80ec-ebb6267b6b1e_resource

codeSpace

Dataset language

eng

Spatial reference system

code identifying the spatial reference system

http://www.opengis.net/def/crs/EPSG/0/27700

Classification of spatial data and services

Topic category

environment

elevation

Keywords

Keyword set

keyword value

LIDAR

environment

elevation

Keyword set

keyword value

Elevation

originating controlled vocabulary

title

GEMET - INSPIRE themes, version 1.0

reference date

date type

publication

effective date

2008-06-01

Keyword set

keyword value

survey

originating controlled vocabulary

title

GEMET - Concepts, version 2.4

reference date

date type

publication

effective date

2010-01-13

Keyword set

keyword value

remote sensing

originating controlled vocabulary

title

GEMET - Concepts, version 2.4

reference date

date type

publication

effective date

2010-01-13

Geographic location

West bounding longitude

-6.236

East bounding longitude

2.072

North bounding latitude

55.816

South bounding latitude

49.943

Temporal reference

Temporal extent

Begin position

2016-11-11

End position

2022-05-05

Dataset reference date

date type

creation

effective date

2023-02-08

date type

revision

effective date

2023-12-15

Frequency of update

annually

Quality and validity

Lineage

Light Detection and Ranging (LIDAR) is an airborne mapping technique, which uses a laser to measure the height of the terrain and surface objects on the ground such as trees and buildings. Hundreds of thousands of 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 vertical accuracy of the LIDAR dataset is +/-15cm RMSE.

Conformity

Data format

name of format

Open format | Geo Tagged Image File Format (GeoTIFF)

version of format

Constraints related to access and use

Constraint set

Use constraints

Open Government Licence

Constraint set

Limitations on public access

There are no public access constraints to this data. Use of this data is subject to the licence identified.

Constraint set

Use constraints

Constraint set

Limitations on public access

There are no public access constraints to this data. Use of this data is subject to the licence identified.

Responsible organisations

Responsible party

organisation name

Environment Agency

email address

DSPcustomerforum@environment-agency.gov.uk

web address

https://environment.data.gov.uk/support

description: Defra Data Services Forum

responsible party role

pointOfContact

Metadata on metadata

Metadata point of contact

organisation name

Environment Agency

email address

DSPcustomerforum@environment-agency.gov.uk

responsible party role

pointOfContact

Metadata date

2024-01-08

Metadata language

eng