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SMAP Level 4 Surface and Root Zone Soil MoistureThe SMAP Level 4 soil moisture (L4_SM) product provides global estimates of surface and root zone soil moisture, along with other land surface variables and their error estimates. These estimates are obtained through assimilation of SMAP brightness temperature observations into the Goddard Earth Observing System (GEOS-5) land surface model. The L4_SM product is provided at 9 km spatial and 3-hourly temporal resolution and with about 2.5 day latency. The soil moisture and temperature estimates in the L4_SM product are validated against in situ observations. The L4_SM product meets the required target uncertainty of 0.04 m(exp. 3)m(exp. -3), measured in terms of unbiased root-mean-square-error, for both surface and root zone soil moisture.
Document ID
20170007932
Acquisition Source
Goddard Space Flight Center
Document Type
Conference Paper
Authors
Reichle, R. (NASA Goddard Space Flight Center Greenbelt, MD United States)
De Lannoy, G. (Katholieke Univ. te Leuven Belgium)
Liu, Q. (Science Systems and Applications, Inc. Greenbelt, MD, United States)
Ardizzone, J. (Science Systems and Applications, Inc. Greenbelt, MD, United States)
Kimball, J. (Montana Univ. Missoula, MT, United States)
Koster, R. (NASA Goddard Space Flight Center Greenbelt, MD United States)
Date Acquired
August 22, 2017
Publication Date
July 10, 2017
Subject Category
Statistics And Probability
Meteorology And Climatology
Report/Patent Number
GSFC-E-DAA-TN45641
Report Number: GSFC-E-DAA-TN45641
Meeting Information
Meeting: IEEE International Geoscience and Remote Sensing Symposium (IGARSS) 2016
Location: Beijing
Country: China
Start Date: July 10, 2016
End Date: July 15, 2016
Sponsors: Institute of Electrical and Electronics Engineers
Funding Number(s)
CONTRACT_GRANT: NNG17HP01C
Distribution Limits
Public
Copyright
Public Use Permitted.
Keywords
SMAP
Soil Moisture
data assimilation

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