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

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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Additional Info

Field	Value
Maintainer	NSIDC Services
Last Updated	July 17, 2025, 17:37 (UTC)
Created	April 1, 2025, 01:57 (UTC)
accessLevel	public
bureauCode	{026:00}
catalog_@context	https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
catalog_@id	https://data.nasa.gov/data.json
catalog_conformsTo	https://project-open-data.cio.gov/v1.1/schema
catalog_describedBy	https://project-open-data.cio.gov/v1.1/schema/catalog.json
citation	SMAP L4 Global Daily 9 km EASE-Grid Carbon Net Ecosystem Exchange V007. Version 007. Archived by National Aeronautics and Space Administration, U.S. Government, NASA National Snow and Ice Data Center Distributed Active Archive Center. https://doi.org/10.5067/3K9F0S1Q5J2U.
graphic-preview-description	This application allows you to interactively browse global satellite imagery within hours of it being acquired. You can also save it, share it, and download the underlying data.
graphic-preview-file	https://worldview.earthdata.nasa.gov/?v=-245,-97,183,101&l=SMAP_L4_Frozen_Area,SMAP_L4_Emult_Average,SMAP_L4_Mean_Heterotrophic_Respiration,SMAP_L4_Mean_Gross_Primary_Productivity,SMAP_L4_Uncertainty_Mean_Net_Ecosystem_Exchange,SMAP_L4_Mean_Net_Ecosystem_Exchange,Coastlines_15m,MODIS_Terra_CorrectedReflectance_TrueColor&t=2015-04-13
harvest_object_id	ceb8c28e-9b0d-4dca-a331-69d638e799ef
harvest_source_id	61638e72-b36c-4866-9d28-551a3062f158
harvest_source_title	DNG Legacy Data
identifier	C2534576405-NSIDC_ECS
issued	2015-03-31
landingPage	https://doi.org/10.5067/3K9F0S1Q5J2U
language	{en-US}
metadata_type	geospatial
modified	2025-03-13
programCode	{026:001}
publisher	NASA NSIDC DAAC
resource-type	Dataset
source_datajson_identifier	true
source_hash	1db274b549bfb9e2416c40abf9f5633c36d1616173163620c97e6b2731963ca0
source_schema_version	1.1
spatial	-180.0 -85.044 180.0 85.044
temporal	2015-03-31T00:00:00Z/2025-03-24T00:00:00Z
theme	{geospatial}