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SMEX02 Watershed Vegetation Sampling Data, Walnut Creek, Iowa

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Entry ID

NSIDC-0187

Summary

This data set contains the vegetation parameters stand density, plant height, phenological stage, ground cover, green and dry biomass, row spacing, stem and leaf water content, and leaf area index (LAI) as part of the Soil Moisture Experiment 2002 (SMEX02). The SMEX studies are designed to evaluate, among other things, the accuracy of AMSR-E soil moisture data. This study was conducted during June and July 2002 in the SMEX02 Iowa watershed area in Iowa, USA. LAI was measured by a plant canopy analyzer. The other parameters were measured manually. Digital photographs were taken of each location to record crop sampling location conditions.

LAI is the ratio of the total area of all leaves on a plant to the area of ground covered by the plant. Stand density is the number of plants in a meter length of a crop row. Plant height and row spacing data are given in meters.

Data are provided in ASCII text files and as 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: 42.7°     S: 41.7°     E: -93.2°     W: -93.8°    

Data Set Citation

Dataset Creator: Anderson, M.
Dataset Title: SMEX02 Watershed Vegetation Sampling Data, Walnut Creek, Iowa
Dataset Release Date: 2003-09-29
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-0187.html

Temporal Coverage

Start Date: 2002-06-15
Stop Date: 2002-07-09

Location Keywords

  • CONTINENT NORTH AMERICA UNITED STATES OF AMERICA

Science Keywords

  • Agriculture Agricultural Plant Science
  • Biosphere Vegetation
  • Biosphere Vegetation Biomass
  • Biosphere Vegetation Leaf Characteristics
  • Biosphere Vegetation Plant Characteristics
  • Biosphere Vegetation Vegetation Cover
  • Biosphere Vegetation Vegetation Index

Ancillary Keywords

  • Biomass
  • Field Investigations
  • Leaf Area Index
  • NSIDC
  • NSIDC DAAC
  • NSIDC > National Snow and Ice Data Center
  • Plant Biomass
  • Plant Phenology
  • Plant Species Cover
  • SMEX
  • Vegetation
  • Vegetation Cover
  • vegetation distribution
  • Vegetation Height
  • Vegetation Species

Platform

  • FIELD SURVEYS

Instrument

  • LICOR PLANT CANOPY ANALYZER

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

Personnel

Martha Anderson
Role: INVESTIGATOR
Email: mcanders@facstaff.wisc.edu
Contact Address:

  • University of Wisconsin
  • 1525 Observatory Dr.

City: Madison
Province or State: WI
Postal Code: 53705
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
NSIDC DAAC AMSR-E Validation Data: Soil Moisture Data Web site

VIEW PROJECT HOME PAGE
Soil Moisture Experiments in 2002 Web site

VIEW PROJECT HOME PAGE
Soil Moisture Experiment (SMEX) Web site.

Metadata Name and Version

Metadata Name: CEOS IDN DIF
Metadata Version: 9.7

Creation and Review Dates

DIF Creation Date: 2003-09-29
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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