L4 Above Ground Biomass

Monitoring Above Ground Biomass (AGB) is of prime importance to track the vegetation health and estimate the carbon stocks, among other applications. The Vegetation Optical Depth (VOD) derived from the multi-angular Brightness Temperatures (TB) measured by the Soil Moisture and Ocean Salinity (SMOS) mission can be processed in order to get a global AGB estimation.

Figure 1: Above Ground Biomass estimated with SMOS VOD, based on ESA CCI 2018


The AGB time series cover the life span of SMOS, i.e. 2011- 2023 at the moment.

SM_SCIE_MIR_L4AGBA version 4 is based on the ESA CCI version 4 AGB map
SM_SCIE_MIR_L4AGBB version 3 is based on the Avitabile et al. AGB map

The estimated global and annual AGB maps and their uncertainties are freely provided as NetCDF files. Each file holds the AGB and associated std for all years covered by SMOS for a particular reference map. They are freely distributed by the CATDS - Centre Aval de Traitement des Données SMOS so that users can benefit from them in their studies on e.g. vegetation state monitoring, carbon stock estimation, land cover and land use or any other relevant topics.


The file content description and the method are detailed in the technical note :
Boitard S. et al (2023). AGB and TH estimation from SMOS LVOD, Issue 3.0, Technical note SO-TN-CB-GS-0108
Date : 2023/11/02
application/pdf AGB estimation

Data reference

Arnaud Mialon (2023). CATDS-CEC-SM L3 AGB Aggregated yearly global map of vegetation above ground biomass (AGB) obtained from SMOS' satellite optical thickness. CNES, IFREMER CESBIO(CATDS). doi:10.12770/95f76ff0-5d89-430d-80db-95fbdd77f543

Note that a paper is in preparation and will be submitted soon (Boitard et al.)

Product access

HTTPS access

This research products is freely available on HTTPS:

FTP access

This research products is freely available on FTP:
ftp ftp.ifremer.fr
user : ext-catds-cecsm
password : catds2010
chdir : Land_products/L4_Above_Ground_Biomass/
or ftp://ext-catds-cecsm:catds2010@ftp.ifremer.fr/Land_products/L4_Above_Ground_Biomass (no longer works in the recent versions of most of the web browers)

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