SMAP L4 9 km EASE-Grid Surface and Root Zone Soil Moisture Analysis Update, Version 1

Data set id:

SPL4SMAU

DOI: 10.5067/SHSINYSFEV8L

Data Citation and Acknowledgment
As a condition of using these data, you must cite the use of this data set. Such a practice gives credit to data set producers and advances principles of transparency and reproducibility.

Reichle, R., De Lannoy, G., Koster, R. D., Crow, W. T. & Kimball, J. S. (2015). SMAP L4 9 km EASE-Grid Surface and Root Zone Soil Moisture Analysis Update. (SPL4SMAU, Version 1). [Data Set]. Boulder, Colorado USA. NASA National Snow and Ice Data Center Distributed Active Archive Center. https://doi.org/10.5067/SHSINYSFEV8L. [describe subset used if applicable]. Date Accessed 12-12-2024.

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There is a more recent version of these data.
Version Summary

First public data release

Overview

This document describes the SMAP Level-4 Surface and Root Zone Soil Moisture (SPL4SM) data product, which consists of:

SMAP L4 9 km EASE-Grid Surface and Root Zone Soil Moisture Geophysical Data (SPL4SMGP)
SMAP L4 9 km EASE-Grid Surface and Root Zone Soil Moisture Analysis Update (SPL4SMAU)
SMAP L4 9 km EASE-Grid Surface and Root Zone Soil Moisture Land Model Constants (SPL4SMLM)

For each product, input SMAP L-band brightness temperatures 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.

Note: These data are Beta-release quality, meaning that they have not undergone full validation and may still contain significant errors.

Parameter(s):

SOIL MOISTURE/WATER CONTENT

Platform(s):

SMAP Observatory

Sensor(s):

SMAP L-BAND RADIOMETER

Data Format(s):

HDF5, HDF5

Temporal Coverage:

31 March 2015 to 22 April 2016

Temporal Resolution:

3 hour

Spatial Resolution:

9 km

9 km

Spatial Coverage:

N:

85.044

S:

-85.044

E:

180

W:

-180

Blue outlined yellow areas on the map below indicate the spatial coverage for this data set.

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This data set has been retired. There is a more recent version of these data.

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