SMERGE_RZSM0_40CM
2.0
SMERGE version 2.0 is an improvement of the previous version v1.0 with a DOI as 10.5067/NRJWAMBMN6JD (decommissioned on November 15, 2019). The main differences between SMERGE v1.0 and SMERGE v2.0 are the addition of a new variable, CCI derived soil moisture anomalies of 0-40 cm layer, and an additional year of data for 2016.
Smerge-Noah-CCI root zone soil moisture 0-40 cm L4 daily 0.125 x 0.125 degree V2.0 (SMERGE_RZSM0_40CM) at GES DISC
Crow, Wade (USDA ARS) and K. Tobin (Texas A&M IU)
Smerge-Noah-CCI root zone soil moisture 0-40 cm L4 daily 0.125 x 0.125 degree V2.0
SMERGE_RZSM0_40CM
2018-11-16T00:00:00.000Z
Greenbelt, Maryland, USA
Goddard Earth Sciences Data and Information Services Center (GES DISC)
2.0
Digital Science Data
DOI
10.5067/PAVQY1KHTMUT
https://disc.gsfc.nasa.gov/datacollection/SMERGE_RZSM0_40CM_2.0.html
METADATA AUTHOR
Xiaohua
Pan
Goddard Earth Sciences Data and Information Services Center
Code 610.2
NASA Goddard Space Flight Center
Greenbelt
MD
20771
USA
301-614-5200
Telephone
301-614-5268
Fax
xiaohua.pan@nasa.gov
EARTH SCIENCE
AGRICULTURE
SOILS
SOIL MOISTURE/WATER CONTENT
EARTH SCIENCE
LAND SURFACE
SOILS
SOIL MOISTURE/WATER CONTENT
ROOT ZONE SOIL MOISTURE
CLIMATOLOGY/METEOROLOGY/ATMOSPHERE
Hydrology
drought
wildfire
agriculture
Not provided
SMERGE
NLDAS-Noah and ESA-CCI Merged Soil Moisture
NOT APPLICABLE
1979-01-02T00:00:00.000Z
COMPLETE
CARTESIAN
CARTESIAN
25
53
-125
-67
Not provided
CONTINENT
NORTH AMERICA
SMERGE
Root-zone Soil moisture MERGE Project
The data are provisional and subject to change as model improvements are implemented and new input data sets become available.
None
The Earth Observing System Data and Information System (EOSDIS) data use policy for NASA data can be accessed at https://earthdata.nasa.gov/earth-observation-data/data-use-policy. For information on how to properly cite and acknowledge data from the NASA GES DISC, refer to https://disc.gsfc.nasa.gov/information/documents?title=data-policy.
English
ARCHIVER
NASA/GSFC/SED/ESD/GCDC/GESDISC
Goddard Earth Sciences Data and Information Services Center (formerly Goddard DAAC), Global Change Data Center, Earth Sciences Division, Science and Exploration Directorate, Goddard Space Flight Center, NASA
https://disc.gsfc.nasa.gov/
DATA CENTER CONTACT
GES DISC HELP DESK SUPPORT GROUP
Goddard Earth Sciences Data and Information Services Center
Code 610.2
NASA Goddard Space Flight Center
Greenbelt
MD
20771
USA
301-614-5224
Telephone
301-614-5268
Fax
gsfc-dl-help-disc@mail.nasa.gov
Online Archive
netCDF
No Fee
us-west-2
s3://gesdisc-cumulus-prod-protected/SMERGE/SMERGE_RZSM0_40CM.2.0/
https://data.gesdisc.earthdata.nasa.gov/s3credentials
https://data.gesdisc.earthdata.nasa.gov/s3credentialsREADME
Tobin, K. J., W. T. Crow, J. Dong, and M. E. Bennett
2019-01-01T00:00:00.000Z
Validation of a New Root-Zone Soil Moisture Product: Soil MERGE
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
12
3351-3365
DOI
10.1109/JSTARS.2019.2930946
Smerge-Noah-CCI root zone soil moisture 0-40 cm L4 daily 0.125 x 0.125 degree V2.0 is a multi-decadal root-zone soil moisture product. Smerge is developed by merging the North American Land Data Assimilation System (NLDAS) land surface model output with surface satellite retrievals from the European Space Agency Climate Change Initiative. The data have a 0.125 degree resolution at a daily time-step, covering the entire continental United States and spanning nearly four decades (January 1979 to May 2019).
This data product contains root-zone soil moisture of 0 - 40 cm layer, Climate Change Initiative (CCI) derived soil moisture anomalies of 0-40 cm layer, and a soil moisture data estimation flag.
This data product is the recommended replacement for the AMSR-E/Aqua root zone soil moisture L3 1 day 25 km x 25 km descending and 2-Layer Palmer Water Balance Model V001 product (LPRM_AMSRE_D_RZSM3), which will be removed from archive on June 27, 2022. Smerge provides a better root zone soil moisture estimation because it has higher data quality and longer temporal coverage.
VIEW RELATED INFORMATION
USER'S GUIDE
https://hydro1.gesdisc.eosdis.nasa.gov/data/SMERGE/SMERGE_RZSM0_40CM.2.0/doc/README_SMERGE2.pdf
product README file
GET RELATED VISUALIZATION
https://docserver.gesdisc.eosdis.nasa.gov/public/project/Images/SMERGE_RZSM0_40CM_2.0.png
SMERGE root-zone soil moisture 0 - 40 cm layer, Sep. 27, 1981
DATA SET LANDING PAGE
https://disc.gsfc.nasa.gov/datacollection/SMERGE_RZSM0_40CM_2.0.html
Access the dataset landing page from the GES DISC website.
GET DATA
DATA TREE
https://hydro1.gesdisc.eosdis.nasa.gov/data/SMERGE/SMERGE_RZSM0_40CM.2.0/
Access the data via HTTPS.
GET DATA
Earthdata Search
https://search.earthdata.nasa.gov/search?q=SMERGE_RZSM0_40CM
Use the Earthdata Search Client to find and retrieve data sets across multiple data centers.
GET RELATED VISUALIZATION
GIOVANNI
https://giovanni.gsfc.nasa.gov/giovanni/#dataKeyword=SMERGE_RZSM0_40CM
The GES-DISC Interactive Online Visualization ANd aNalysis Interface (Giovanni) is a web-based tool that allows users to interactively visualize and analyze data.
USE SERVICE API
OPENDAP DATA
https://hydro1.gesdisc.eosdis.nasa.gov/opendap/SMERGE/SMERGE_RZSM0_40CM.2.0/
Access the data via the OPeNDAP protocol.
VIEW RELATED INFORMATION
READ-ME
https://hydro1.gesdisc.eosdis.nasa.gov/data/SMERGE/SMERGE_RZSM0_40CM.2.0/doc/README_SMERGE2.pdf
README Document
PROJECT HOME PAGE
https://www.tamiu.edu/cees/smerge/overview.shtml
SMERGE Product Overview
VIEW RELATED INFORMATION
HOW-TO
https://disc.gsfc.nasa.gov/information/howto?tags=hydrology
How to read and plot the data.
USE SERVICE API
THREDDS DATA
https://hydro1.gesdisc.eosdis.nasa.gov/thredds/catalog/SMERGE_aggregation/SMERGE_RZSM0_40CM.2.0/catalog.html
Time aggregated THREDDS Data Server (TDS)
CEOS IDN DIF
VERSION 10.2
2018-10-12
2022-05-17
2018-11-01T00:00:00.000Z
2018-11-01T00:00:00.000Z
4
gov.nasa.gsfc.gcmd.standardproduct
StandardProduct
false