SMEX03 Surface Roughness Data  View Catalog Page Entry ID
NSIDC-0345
Summary
The data set SMEX03 Surface Roughness Data is comprised of data collected over the regional study areas of Alabama, Georgia, and Oklahoma, USA as part of the 2003 Soil Moisture Experiment (SMEX03). The experiment was conducted from June 2003 through July 2003 at various hydrologic network sites in northern Alabama, at the Little River (LR) watershed in southern Georgia, and at the Little Washita (LW) watershed in south-central Oklahoma. Surface roughness parameters include root mean square (rms) height, correlation length (L), and correlation length function [f(L)]. For each regional study area, surface roughness conditions were photographed using a grid board and the roughness photographs were then digitized in order to derive surface roughness calculations. The total volume for this combined data set is approximately 20 KB. Data are provided in ASCII text files and are available via FTP.
These data were collected as part of a validation study for the Advanced Microwave Scanning Radiometer - Earth Observing System (AMSR-E). AMSR-E is a mission instrument launched aboard NASA's Aqua Satellite on 04 May 2002. AMSR-E validation studies linked to SMEX are designed to evaluate the accuracy of AMSR-E soil moisture data. Specific validation objectives include assessing and refining soil moisture algorithm performance; verifying soil moisture estimation accuracy; investigating the effects of vegetation, surface temperature, topography, and soil texture on soil moisture accuracy; and determining the regions that are useful for AMSR-E soil moisture measurements.
Geographic Coverage
Spatial Coordinates:
N: 34.95°
S: 34.87°
E: -97.7°
W: -98.4°
N: 35.16°
S: 34.68°
E: -85.78°
W: -87.07°
N: 31.96°
S: 30.9°
E: -83.49°
W: -83.88°
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Data Set Citation
Dataset Creator: Al-hamdan, M., Cosh, M., Jackson, T.J. and C. Laymon
Dataset Title: SMEX03 Surface Roughness Data
Dataset Release Date: 2008-11-07
Dataset Release Place: Boulder, Colorado USA
Dataset Publisher: NSIDC: National Snow and Ice Data Center
Online Resource: http://nsidc.org/data/nsidc-0345.html
Temporal Coverage
Start Date: 2003-06-01
Stop Date: 2003-07-31
Location Keywords
- CONTINENT NORTH AMERICA UNITED STATES OF AMERICA ALABAMA
- CONTINENT NORTH AMERICA UNITED STATES OF AMERICA GEORGIA
- CONTINENT NORTH AMERICA UNITED STATES OF AMERICA OKLAHOMA
Science Keywords
- Land Surface Topography Surface Roughness
Ancillary Keywords
- AMSR-E
- Ancillary Data
- DAAC
- NASA
- NSIDC
- NSIDC DAAC
- NSIDC > National Snow and Ice Data Center
- SMEX
- Soil Moisture
- Surface Roughness
- Climatology/Meteorology/Atmosphere
Instrument
Project
- SMEX03 Soil Moisture Experiments in 2003
Data Set Progress
complete
Originating Center
NSIDC_DAAC
Data Center
NASA DAAC at the National Snow and Ice Data Center
Data Center URL: http://nsidc.org/daac/index.html
Data Center Personnel
Name: NSIDC User Services
Phone: 1 303 492-6199
Fax: 1 303 492-2468
Email: nsidc@nsidc.org
Contact Address:
- National Snow and Ice Data Center
- CIRES, 449 UCB
- University of Colorado
City: Boulder
Province or State: CO
Postal Code: 80309-0449
Country: USA
National Snow and Ice Data Center
Data Center URL: http://nsidc.org
Data Center Personnel
Name: NSIDC User Services
Phone: 1 303 492-6199
Fax: 1 303 492-2468
Email: nsidc@nsidc.org
Contact Address:
- National Snow and Ice Data Center
- CIRES, 449 UCB
- University of Colorado
City: Boulder
Province or State: CO
Postal Code: 80309-0449
Country: USA
Distribution
Distribution Media: FTP
Distribution Size: 20 KB
Distribution Format: ASCII Text
Personnel
Mohammad Al-Hamdan
Role: INVESTIGATOR
Contact Address:
- Global Hydrology and Climate Center
- Earth System Science Program/National Space Science and Technology Center
City: Huntsville
Province or State: Alabama
Postal Code: 35805
Country: USA
Thomas Jackson
Role: INVESTIGATOR
Phone: 1 301 504-8511
Fax: 1 301 504-8931
Email: tjackson@hydrolab.arsusda.gov
Contact Address:
- U.S. Department of Agriculture
- ARS Hydrology Lab
- USDA ARS Hydrology Lab
- 104 Bldg. 007
- BARC-West
City: Beltsville
Province or State: MD
Postal Code: 20705
Country: USA
Michael Cosh
Role: INVESTIGATOR
Phone: 1 301 504-6461
Fax: 1 301 504-8931
Email: mcosh@hydrolab.arsusda.gov
Contact Address:
- U.S. Department of Agriculture
- USDA ARS Hydrology Lab
- USDA ARS Hydrology Lab
- 104 Bldg. 007
- BARC-West
City: Beltsville
Province or State: MD
Postal Code: 20705
Country: USA
Charles Laymon
Role: INVESTIGATOR
Contact Address:
- Alabama A&M University
- Universities Space Research Association/National Space Science and Tech. Center
- 320 Sparkman Dr.
City: Huntsville
Province or State: AL
Postal Code: 35805
Country: USA
NSIDC User Services
Role: TECHNICAL CONTACT
Phone: 1 303 492-6199 x
Fax: 1 303 492-2468 x
Email: nsidc@nsidc.org
Contact Address:
- National Snow and Ice Data Center
- CIRES, 449 UCB
- University of Colorado
City: Boulder
Province or State: CO
Postal Code: 80309-0449
Country: USA
Related URL
VIEW PROJECT HOME PAGE
AMSR-E/Aqua Data at NSIDC
VIEW PROJECT HOME PAGE
AMSR-E Validation Data at NSIDC
Reference
Please visit the USDA SMEX03 Web site (http://hydrolab.arsusda.gov/smex03/) for in-depth information on the science mission and goal of the SMEX project. National Soil Survey Center Web site (http://ssldata.sc.egov.usda.gov/)
United States Department of Agriculture (USDA) Natural Resources Conservation Service (NRCS) Soil and Climate Analysis Network (SCAN) Web site (http://www.wcc.nrcs.usda.gov/scan/)
Dobson, M.C. and F.T. Ulaby, 1998, Mapping soil moisture distribution with imaging radar, 407- 430. In: Henderson, F.M. and Lewis, A.J., 1998, Principles & Application of imaging radar, John Wiley & Sons, New York.
Ulaby, F.T., R.K. Moore, and A.K. Fung, 1982, Microwave remote sensing: active and passive. Vol. II Radar remote sensing and surface scattering and emission theory (Norwood, MA: Artech House).
Metadata Name and Version
Metadata Name: CEOS IDN DIF
Metadata Version: 9.7
Creation and Review Dates
DIF Creation Date: 2008-11-07
Last DIF Revision Date: 2009-10-08
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