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Description

The Level-4 carbon product (SPL4CMDL) provides global gridded daily estimates of net ecosystem carbon (CO2) exchange derived using a satellite data 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 at 1 km spatial resolution using an Earth-fixed, global, cylindrical 9 km Equal-Area Scalable Earth Grid, Version 2.0 (EASE-Grid 2.0) projection.
<p>Note: These data are Beta-release quality, meaning that they have not undergone full validation and may still contain significant errors. </p>

Version Description

First public data release

Product Summary

Platforms
Aqua ,
SMAP ,
Suomi-NPP ,
Terra
Instruments
MODIS ,
SMAP L-BAND RADAR ,
VIIRS
Spatial Extent

N: 85.044 S: -85.044 E: 180 W: -180

Spatial Resolution
9 Kilometers x 9 Kilometers
Location
GLOBAL LAND
Coordinate System
CARTESIAN
Granule Spatial Representation
CARTESIAN
Temporal Extent
2015-04-13 to 2016-04-21
Temporal Resolution
1 Day
Concept ID
C4114258476-NSIDC_CPRD
Data State
DEPRECATED
Number of Files/Granules
0
Processing Level
4
Published
Updated
Science Keywords
Gross Primary Production (gpp) ,
Heterotrophic Respiration (rh) ,
NET ECOSYSTEM CO2 EXCHANGE (NEE) ,
Soil Organic Carbon (SOC)

Citation

Citation is critically important for dataset documentation and discovery. This dataset is openly shared, without restriction, in accordance with the EOSDIS Data Use and Citation Guidance.

Copy Citation

Kimball, J., Jones, L., Glassy, J., & Reichle, R. (2015). SMAP L4 Global Daily 9 km Carbon Net Ecosystem Exchange, Version 1 [Data set]. NASA National Snow and Ice Data Center Distributed Active Archive Center. https://doi.org/10.5067/22TFAUSNLO9R Date Accessed: 2026-05-23

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