Close

Service Interruption

The NSIDC Web site and data services are currently having intermittent problems and may be unavailable. We are working to restore these services as soon as possible and apologize for any inconvenience this may cause. Please contact NSIDC User Services for assistance.



SMEX04 ENVISAT ASAR Data: Arizona

View Catalog Page

Entry ID

NSIDC-0417

Summary

This data set is comprised of browse images acquired over the regional study area of Arizona, USA for the 2004 Soil Moisture Experiment (SMEX04). The experiment was conducted using the Advanced Synthetic Aperture Radar (ASAR) instrument on board the European Space Agency's (ESA) Environmental Satellite (ENVISAT). Cross-polarized C-band ASAR images were acquired for 09 September 2003 and 14 October 2003 in order to obtain a backscatter coefficient measurement over a range of natural vegetation types. However, the images provided here are only browse images and therefore cannot be used to derive backscatter coefficient values. Researchers interested in backscatter coefficient values must obtain the ASAR data. The total volume for this data set is approximately 8.3 megabytes. Data are available via FTP and are provided as JPEG image files. Also included and available via FTP are the following types of header files: HAN files, ASCII text files, and one INI file.

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: 32.57°     S: 31.41°     E: -109.01°     W: -110.31°    

Data Set Citation

Dataset Creator: Jackson, T., R. Bindlish, and R. Van der Velde.
Dataset Title: SMEX04 ENVISAT ASAR Data: Arizona
Dataset Release Date: 2009-08-18
Dataset Release Place: Boulder, Colorado USA
Dataset Publisher: NSIDC DAAC: NASA DAAC at the National Snow and Ice Data Center
Online Resource: http://nsidc.org/data/nsidc-0417.html

Temporal Coverage

Start Date: 2003-09-09
Stop Date: 2003-09-09

Start Date: 2003-10-14
Stop Date: 2003-10-14

Location Keywords

  • CONTINENT NORTH AMERICA UNITED STATES OF AMERICA ARIZONA

Science Keywords

  • Spectral/Engineering Radar Radar Backscatter

Ancillary Keywords

  • AMSR-E
  • C-band radar
  • DAAC
  • NSIDC
  • NSIDC DAAC
  • NSIDC > National Snow and Ice Data Center
  • SAR imagery
  • Satellite Radar Data
  • SMEX
  • Soil Moisture
  • Surface Layer Backscatter

ISO Topic Category (View Definitions)

  • Climatology/Meteorology/Atmosphere

Platform

  • ENVISAT Environmental Satellite

Instrument

  • ASAR Advanced Synthetic Aperature Radar

Project

  • SMEX04 Soil Moisture Experiments in 2004

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: 2.6 MB
Distribution Format: ASCII Text (.txt)

Distribution Media: FTP
Distribution Size: 8.3 MB
Distribution Format: Joint Photographic Expert Group (JPEG) (.jpg)

Personnel

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

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

Rajat Bindlish
Role: INVESTIGATOR
Email: bindlish@hydrolab.arsusda.gov
Contact Address:

  • USDA
  • ARS Hydrology and Remote Sensing Lab

City: Beltsville
Province or State: MD
Postal Code: 20705
Country: USA

Rogier Van der Velde
Role: INVESTIGATOR
Contact Address:

  • U.S. Department of Agriculture
  • ARS Soil Tilth Laboratory
  • ARS Soil Tilth Laboratory
  • U.S. Department of Agriculture

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 RELATED INFORMATION
AMSR-E/Aqua Data

VIEW RELATED INFORMATION
AMSR-E Validation Data

VIEW RELATED INFORMATION
SMEX Product Web Site

Reference

Please visit the USDA SMEX04 Web site (http://hydrolab.arsusda.gov/smex04/) for in-depth information on the science mission and goal of the SMEX project.

Metadata Name and Version

Metadata Name: CEOS IDN DIF
Metadata Version: 9.7

Creation and Review Dates

DIF Creation Date: 2009-08-18
Last DIF Revision Date: 2013-10-09

Metadata Views

DIF Text-Only

Directory Interchange Format (DIF) in plain text

DIF XML

Directory Interchange Format (DIF) in Extensible Markup Language (XML)

FGDC HTML

U.S. Federal Geographic Data Committee (FGDC) Content Standard for Digital Geospatial Metadata (CSDGM)

ISO HTML

International Organization for Standardization (ISO) 19115:2003 Geographic Information Metadata

Back to Top