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Catalog datasets represent a fraction of data in use by active WMA projects. The team is working on including more datasets to provide a complete view of data-in-use. Let us know how your experience is!

Datasets

SMAP L4 Global 3-hourly 9 km EASE-Grid Surface and Root Zone Soil Moisture Geophysical Data, Version 7

Domain: Soils; Hydrology

Variables: Root zone soil moisture; Surface soil moisture

Spatial Resolution: 9 kilomter

Temporal Frequency: 3 hours

Temporal Coverage: 2015 - Present

Spatial Extent: Global

Source: NASA

Update Type: Dynamic

Update Frequency: daily

Update Detail: append

Access:

Description:

SMAP Level-4 (L4) surface and root zone soil moisture data are provided in three products: 1) SMAP L4 Global 3-hourly 9 km EASE-Grid Surface and Root Zone Soil Moisture Geophysical Data (SPL4SMGP, DOI: 10.5067/EVKPQZ4AFC4D), 2) SMAP L4 Global 3-hourly 9 km EASE-Grid Surface and Root Zone Soil Moisture Analysis Update (SPL4SMAU, DOI: 10.5067/LWJ6TF5SZRG3), 3) SMAP L4 Global 9 km EASE-Grid Surface and Root Zone Soil Moisture Land Model Constants (SPL4SMLM, DOI: 10.5067/KN96XNPZM4EG). For each product, SMAP L-band brightness temperature data from descending and ascending half-orbit satellite passes (approximately 6:00 a.m. and 6:00 p.m. local solar time, respectively) are assimilated into a land surface model that is gridded using an Earth-fixed, global cylindrical 9 km Equal-Area Scalable Earth Grid, Version 2.0 (EASE-Grid 2.0) projection.

Citation:

Reichle, R., De Lannoy, G., Koster, R.D., Crow, W.T., Kimball, J.S., Liu, Q., and Bechtold, M., 2022, SMAP L4 Global 3-hourly 9 km EASE-Grid Surface and Root Zone Soil Moisture Geophysical Data, Version 7 [Data Set]: NASA National Snow and Ice Data Center Distributed Active Archive Center, accessed [YYYY-MM-DD] at https://doi.org/10.5067/EVKPQZ4AFC4D