SMEX02 Soil Moisture and Temperature Profiles, Walnut Creek, Iowa  View Catalog Page 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°
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Data Set Citation
Dataset Creator: William Crosson and Charles Laymon
Dataset Title: SMEX02 Soil Moisture and Temperature Profiles, Walnut Creek, Iowa
Dataset Release Date: 2003-09-30
Dataset Release Place: Boulder, CO
Dataset Publisher: National Snow and Ice Data Center (NSIDC)
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 > National Snow and Ice Data Center
- NSIDC DAAC
- Rain
- Rain Accumulation
- Rain Amount
- Rain Gauge
- Rainfall Amount
- Rainfall Total
- SMEX
- Soil Heat Temperature
- Soil Moisture
- Soil Temperature
- Soil Temperatures
- Soil Water Content
- Soil Water Retention
- Surface Rainfall
- Surface Rainfall
- Surface Soil Moisture
- Total Rainfall
- Total Rainfall
Platform
Instrument
- RAIN GAUGES
- SOIL MOISTURE PROBE
- SOIL TEMPERATURE PROBE
Project
- ISMEX Iowa Soil Moisture Experiment
- SMEX02 Soil Moisture Experiments in 2002
Data Set Progress
COMPLETE
Originating Center
NSIDC
Data Center
National Snow and Ice Data Center
Data Center URL: http://nsidc.org
Data Set ID: NSIDC-0185
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
NSIDC Distributed Active Archive Center
Data Center URL: http://nsidc.org/daac/index.html
Data Set ID: NSIDC-0185
Data Center Personnel
Name: NSIDC DAAC 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: 140 KB to 605 KB
Distribution Format: ASCII text files
Distribution Media: FTP
Distribution Size: 4.87 MB
Distribution Format: Microsoft Excel File
Personnel
Charles Laymon
Role: INVESTIGATOR
Contact Address:
320 Sparkman Dr.
City: Huntsville
Province or State: AL
Postal Code: 35805
Country: USA
William Crosson
Role: INVESTIGATOR
Contact Address:
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
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
Related URL
VIEW PROJECT HOME PAGE
VIEW PROJECT HOME PAGE
Reference
Please see the SMEX02 site for more information, and the NSIDC SMEX site to access data.
Metadata Name and Version
Metadata Name: CEOS IDN DIF
Metadata Version: 9.7
Creation and Review Dates
DIF Creation Date: 2003-09-15
Last DIF Revision Date: 2007-08-21
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