SMAP L4 Global Daily 9 km EASE-Grid Carbon Net Ecosystem Exchange V007

Published by NASA NSIDC DAAC | National Aeronautics and Space Administration | Metadata Last Checked: November 04, 2025 | Last Modified: 2025-03-31

The Level-4 (L4) carbon product (SPL4CMDL) provides global gridded daily estimates of net ecosystem carbon (CO2) exchange derived using a satellite data based terrestrial carbon flux model informed by the following: Soil Moisture Active Passive (SMAP) L-band microwave observations, land cover and vegetation inputs from the Moderate Resolution Imaging Spectroradiometer (MODIS), Visible Infrared Imaging Radiometer Suite (VIIRS), and the Goddard Earth Observing System Model, Version 5 (GEOS-5) land model assimilation system. Parameters are computed using an Earth-fixed, global cylindrical 9 km Equal-Area Scalable Earth Grid, Version 2.0 (EASE-Grid 2.0) projection.

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Complete Metadata

bureauCode	[ "026:00" ]
identifier	C2938665243-NSIDC_CPRD
issued	2015-03-31
landingPage	https://doi.org/10.5067/3K9F0S1Q5J2U
language	[ "en-US" ]
programCode	[ "026:001" ]
spatial	-180.0 -85.044 180.0 85.044
temporal	2015-03-31T00:00:00Z/2025-03-24T00:00:00Z
theme	[ "geospatial" ]