AirMOSS: L4 Modeled Volumetric Root Zone Soil Moisture, 2012-2015

This data set provides hourly gridded soil moisture estimates derived from hydrologic modeling at nine AirMOSS sites across North America. The AirMOSS L4 RZSM product represents a temporal interpolation of intermittent AirMOSS L2/3 RZSM retrievals into a temporally-continuous, multi-layer, hourly soil moisture product. The L4 RZSM data have the same spatial resolution (3-arcsecs or ~100 m), and the same temporal coverage (generally Fall 2012 through Fall 2015), as the underlying L2/3 RZSM data. The L4 RZSM data were produced by the integration of the Level 2/3 product and other ancillary information into the Penn State Integrated Hydrologic Model (PIHM). Many key applications for AirMOSS data products, including the calculation of net ecosystem exchange (NEE), require temporally continuous RZSM estimates such as those provided here.

Data and Resources

Additional Info

Field Value
Maintainer Earthdata Forum
Last Updated March 30, 2026, 16:16 (UTC)
Created April 1, 2025, 14:15 (UTC)
accessLevel public
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harvest_source_id b99e41c6-fe79-4c19-bbc3-9b6c8111bfac
harvest_source_title Science Discovery Engine
identifier 10.3334/ORNLDAAC/1421
license https://www.usa.gov/government-works
modified 2026-03-23T22:15:59Z
programCode {026:000}
publisher ORNL_DAAC
resource-type Dataset
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source_hash affdbb86145ca44e0d2e7a41e64ecff33283aef4abe319205c1ee5850a53ca6d
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spatial [[{"WestBoundingCoordinate":-123.283,"NorthBoundingCoordinate":54.1254,"EastBoundingCoordinate":-68.1237,"SouthBoundingCoordinate":19.1247}],"CARTESIAN"]
temporal 2012-09-21/2015-09-28
theme {"Earth Science"}