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SMEX02 Land Surface Information: Soils Database

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Entry ID

NSIDC-0278

Summary

The Soil Moisture Experiment 2002 (SMEX02) took place in Ames, Iowa USA between 25 June and 12 July 2002. The NASA Land Surface Hydrology Data Archive maintains an archive of soils and land cover characteristics for SMEX02. SMEX02 studies are designed to evaluate the accuracy of AMSR-E soil moisture data specific to the SMEX02 study areas, and SMEX02 provided the unique opportunity to test microwave soil moisture retrieval over agricultural land cover. The Soils Database includes Environmental Systems Research Institute (ESRI) shapefiles containing geographic information such as railroads, roads, and stream locations; drainage features; political boundaries; and soil classifications. Data for the following 10 Iowa counties are included in this data set: Boone, Dallas, Franklin, Hamilton, Hardin, Jasper, Marshall, Polk, Story, and Wright. These data were created by appending existing county digital soils data provided by the Iowa Cooperative Soil Survey (ICCS) and clipping them by the SMEX02 project area boundary; thus, the dates of data acquisition are highly variable. The entire data set is 293 MB. Data 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: 42.73229°     S: 41.69459°     E: -93.16104°     W: -93.84162°    

Data Set Citation

Dataset Creator: Miller, D.
Dataset Title: SMEX02 Land Surface Information: Soils Database
Dataset Release Date: 2006-02-10
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-0278.html

Temporal Coverage

Start Date: 2002-06-25
Stop Date: 2002-07-12

Location Keywords

  • CONTINENT NORTH AMERICA UNITED STATES OF AMERICA

Science Keywords

  • Agriculture Soils Soil Classification
  • Human Dimensions Boundaries Boundary Surveys
  • Human Dimensions Land Use/Land Cover Land Use Classes
  • Land Surface Land Use/Land Cover Land Use Classes
  • Land Surface Soils Soil Classification

Ancillary Keywords

  • Aerial Photography
  • AMSR-E
  • Ancillary Data
  • Hydrology
  • Landuse classification
  • Maps
  • SMEX
  • Soil Moisture

ISO Topic Category (View Definitions)

  • Imagery/Base Maps/Earth Cover

Platform

  • AERIAL PHOTOGRAPHS
  • MAPS

Instrument

  • CAMERAS

Project

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

Quality

With the exception of Polk county, the source of all soil property attributes is the Iowa Soil Properties and Interpretations Database (ISPAID). Soil Survey Geographic Database (SSURGO, version 2) and Map Unit Interpretation Record (MUIR) databases were used to populate a selected set of soil property attributes for Polk county. Due to dissimilarity between these data sets, attribute values for Polk county may differ from those of similar soils observed in neighboring counties.

Areas of soils of a single taxonomic class rarely, if ever, can be mapped without including areas of soils of other taxonomic classes. Consequently, every map unit is made up of the soil or soils for which it is named and some soils that belong to other taxonomic classes. Please see 'iowa_soils_metadata.pdf' for more details.

Data Set Progress

complete

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: 293 MB
Distribution Format: ESRI Shapefiles (.shp, .shx, .dbf, and .prj)

Personnel

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

Douglas Miller
Role: INVESTIGATOR
Contact Address:

  • Pennsylvania State University
  • 2217 Earth-Engineering Sciences Bldg.

City: University Park
Province or State: PA
Postal Code: 16802
Country: USA

Related URL

VIEW PROJECT HOME PAGE
AMSR-E at NSIDC

VIEW PROJECT HOME PAGE
AMSR-E at NSIDC

VIEW PROJECT HOME PAGE
AMSR-E Validation Data

VIEW PROJECT HOME PAGE
AMSR-E Validation Site

VIEW PROJECT HOME PAGE
NASA Land Surface Hydrology/Soil Moisture Field Experiments Data Archive

Metadata Name and Version

Metadata Name: CEOS IDN DIF
Metadata Version: 9.7

Creation and Review Dates

DIF Creation Date: 2006-02-10
Last DIF Revision Date: 2013-07-08

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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