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Dataset

 

ESA Biomass Climate Change Initiative (Biomass_cci): Global datasets of forest above-ground biomass for the year 2017, v1

Update Frequency: Not Planned
Status: Completed
Online Status: ONLINE
Publication State: Citable
Publication Date: 2019-12-02
DOI Publication Date: 2019-12-02
Download Stats: last 12 months

This dataset has been superseded. See Latest Version here
Abstract

This dataset comprises estimates of forest above-ground biomass for the year 2017. The data has been produced as part of the European Space Agency's (ESA's) Climate Change Initiative (CCI) programme by the Biomass CCI team.

The data products consist of two (2) global layers that include estimates of:
1) above ground biomass (AGB, unit: tons/ha i.e., Mg/ha) for the year 2017 (raster dataset). This is defined as the mass, expressed as oven-dry weight of the woody parts (stem, bark, branches and twigs) of all living trees excluding stump and roots
2) per-pixel estimates of above-ground biomass uncertainty expressed as standard error in Mg/ha (raster dataset)

This release of the data is version 1, with data provided in both netcdf and geotiff format.

Citable as:  Santoro, M.; Cartus, O. (2019): ESA Biomass Climate Change Initiative (Biomass_cci): Global datasets of forest above-ground biomass for the year 2017, v1. Centre for Environmental Data Analysis, 02 December 2019. doi:10.5285/bedc59f37c9545c981a839eb552e4084. http://dx.doi.org/10.5285/bedc59f37c9545c981a839eb552e4084
Abbreviation: Not defined
Keywords: ESA, CCI, Biomass

Details

Previous Info:

2020-03-10 Pleae note, 3 geotiff tiles were accidentally omitted from the original data delivery. These were added on the 10th March 202… Show More 2020-03-10 Pleae note, 3 geotiff tiles were accidentally omitted from the original data delivery. These were added on the 10th March 2020 and can be found in the geotiff/errata_additional_files_20200310 directory. Show Less

Previously used record identifiers:
No related previous identifiers.
Access rules:
Public data: access to these data is available to both registered and non-registered users.
Use of these data is covered by the following licence: http://artefacts.ceda.ac.uk/licences/specific_licences/esacci_biomass_terms_and_conditions.pdf. When using these data you must cite them correctly using the citation given on the CEDA Data Catalogue record.
Data lineage:

Data was created by the Biomass CCI team.
The data was derived from input data from the PALSAR-2 instrument on the ALOS-2 satellite, and data from the Sentinel-1 satellite. The ALOS-2 PALSAR-2 dataset was obtained from the Japanese Aerospace Exploration Agency (JAXA) in the form of a mosaic of images acquired in 2017. The Sentinel-1 dataset consisted of individual data takes by the 1A and 1B units during 2017 and provided by the European Space Agency.

Data Quality:
For information on the quality of the data see the documentation and website for the Biomass CCI
File Format:
Data are provided in both NetCDF and GeoTiff format

Process overview

This dataset was generated by a combination of instruments deployed on platforms and computations as detailed below.

Instrument/Platform pairings

Sentinel 1 Synthetic Aperture Radar (SAR) Deployed on: Sentinel 1A
PALSAR-2 Deployed on: ALOS-2

Computation Element: 1

Title GlobBiomass retrieval algorithm used in the production of the Biomass CCI global dataset of forest above ground biomass for the year 2017.
Abstract The GlobBiomass retrieval algorithm is used to derive estimates of forest above-ground biomass (AGB) from satellite data for the year 2017 as part of the Biomass CCI project. First, per-pixel estimates of growing stock volume (GSV, unit: m3/ha) were obtained from spaceborne SAR images acquired in 2017 (ALOS-2 PALSAR-2, Sentinel-1) with the BIOMASAR algorithm, adapted specifically to ALOS-2 PALSAR-2 and Sentinel-1 data. Individual per-pixel GSV estimates were then combined with a set of merging rules to form the final per-pixel estimate of GSV. The retrieval was supported by LiDAR (ICESAT) data and auxiliary datasets . AGB was then obtained from GSV with a set of Biomass Expansion and Conversion Factors (BCEF) following approaches to extend on ground estimates of wood density and stem-to-total biomass expansion factors to obtain a global raster dataset. See the Algorithm Theoretical Basis Document for details on the EO datasets, the biomass retrieval algorithms and the estimation of the BCEF (see http://cci.esa.int/biomass)
Input Description None
Output Description None
Software Reference None
Output Description None
  • long_name: Above-ground biomass
  • var_id: agb
  • units: Mg/ha
  • names: Above-ground biomass
  • long_name: Above-ground biomass standard_error
  • units: Mg/ha
  • var_id: agb_se
  • names: Above-ground biomass standard_error
  • long_name: CRS definition
  • var_id: crs
  • names: CRS definition
  • var_id: lat_bnds
  • var_id: lon_bnds
  • var_id: time_bnds

Co-ordinate Variables

  • standard_name: latitude
  • long_name: WGS84 latitude coordinate
  • var_id: lat
  • units: degrees_north
  • names: latitude, WGS84 latitude coordinate
  • var_id: lon
  • units: degrees_east
  • long_name: WGS84 longitude coordinate
  • standard_name: longitude
  • names: longitude, WGS84 longitude coordinate
  • standard_name: time
  • long_name: single-year period
  • var_id: time
  • names: time, single-year period
Coverage
Temporal Range
Start time:
2017-01-01T00:00:00
End time:
2017-12-31T23:59:59
Geographic Extent

 
90.0000°
 
-180.0000°
 
180.0000°
 
-90.0000°