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SMEX02 Soil Moisture and Temperature Profiles, Walnut Creek, Iowa

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Entry ID

NSIDC-0185

Summary

This data set contains rainfall, soil moisture, and soil temperature data collected for the Soil Moisture Experiment 2002 (SMEX02). The parameters measured are soil moisture, soil temperature, and rainfall. Soil moisture and temperature were measured at various depths: 2, 5, 10, 15, 20 and 30 cm.

Data were collected in four fields, each containing two measurement sites called 'pit A' and 'pit B.' The study was conducted in the Walnut Creek watershed in south central Iowa, USA, during June and July 2002. Water content reflectometers (WCRs) measured soil moisture. Soil temperature probes (STPs) and averaging thermocouple (TCAV) probes measured soil temperature. A tipping bucket rain gauge measured rainfall.

Data are provided in ASCII text files and a Microsoft Excel file, 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: 41.992°     S: 41.934°     E: -93.529°     W: -93.664°    

Data Set Citation

Dataset Creator: Crosson, W. and C. Laymon.
Dataset Title: SMEX02 Soil Moisture and Temperature Profiles, Walnut Creek, Iowa
Dataset Release Date: 2003-09-19
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-0185.html

Temporal Coverage

Start Date: 2002-06-23
Stop Date: 2002-07-23

Location Keywords

  • CONTINENT NORTH AMERICA UNITED STATES OF AMERICA

Science Keywords

  • Agriculture Soils Soil Moisture/Water Content
  • Agriculture Soils Soil Temperature
  • Atmosphere Precipitation Precipitation Amount
  • Atmosphere Precipitation Rain
  • Land Surface Soils Soil Moisture/Water Content
  • Land Surface Soils Soil Temperature

Ancillary Keywords

  • NSIDC
  • NSIDC DAAC
  • NSIDC > National Snow and Ice Data Center
  • Rain
  • Rain Accumulation
  • Rain Amount
  • Rainfall Amount
  • Rainfall Total
  • Rain Gauge
  • SMEX
  • Soil Heat Temperature
  • Soil Moisture
  • Soil Temperature
  • Soil Temperatures
  • Soil Water Content
  • Soil Water Retention
  • Surface Rainfall
  • Surface Soil Moisture
  • Total Rainfall

Platform

  • FIELD SURVEYS

Instrument

  • RAIN GAUGES
  • SOIL MOISTURE PROBE
  • SOIL TEMPERATURE PROBE

Project

  • SMEX02 Soil Moisture Experiments in 2002
  • ISMEX Iowa Soil Moisture Experiment

Data Set Progress

complete

Originating Center

NSIDC

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: 4.87 MB
Distribution Format: Microsoft Excel

Distribution Media: FTP
Distribution Size: 140 to 605 KB
Distribution Format: ASCII Text (.txt)

Personnel

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

William Crosson
Role: INVESTIGATOR
Contact Address:

  • Marshall Space Flight Center (MSFC)
  • Universities Space Research Association (USRA)
  • 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 Validation

VIEW PROJECT HOME PAGE
Soil Moisture Experiments in 2002

Metadata Name and Version

Metadata Name: CEOS IDN DIF
Metadata Version: 9.7

Creation and Review Dates

DIF Creation Date: 2003-09-19
Last DIF Revision Date: 2013-07-03

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

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