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SMEX02 Watershed Vegetation Sampling Data, Walnut Creek, Iowa
Entry ID: NSIDC-0187


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Summary
Abstract: 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.

Related URL
Link: VIEW PROJECT HOME PAGE
Description: Soil Moisture Experiment (SMEX) Web site.


Link: VIEW PROJECT HOME PAGE
Description: NSIDC DAAC AMSR-E Validation Data: Soil Moisture Data Web site


Link: VIEW PROJECT HOME PAGE
Description: Soil Moisture Experiments in 2002 Web site


Geographic Coverage
 N: 42.7 S: 41.7  E: -93.2  W: -93.8

Data Set Citation
Dataset Originator/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
Version: 1
Online Resource: http://nsidc.org/data/NSIDC-0187


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    [Definition]
BIOSPHERE >VEGETATION >BIOMASS    [Definition]
BIOSPHERE >VEGETATION >LEAF CHARACTERISTICS    [Definition]
BIOSPHERE >VEGETATION >PLANT CHARACTERISTICS    [Definition]
BIOSPHERE >VEGETATION    [Definition]
BIOSPHERE >VEGETATION >VEGETATION COVER    [Definition]
BIOSPHERE >VEGETATION >VEGETATION INDEX    [Definition]


ISO Topic Category
FARMING
ECONOMY
ENVIRONMENT
BIOTA


Platform
FIELD SURVEYS    [Information]


Instrument
LICOR PLANT CANOPY ANALYZER    [Information]


Project
SMEX02 >Soil Moisture Experiments in 2002    [Information]
ISMEX >Iowa Soil Moisture Experiment    [Information]
ESIP >Earth Science Information Partners Program    [Information]
EOSDIS >Earth Observing System Data Information System    [Information]


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


Data Set Progress
COMPLETE


Originating Center
NSIDC


Data Center
NSIDC Distributed Active Archive Center    [Information]
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 at 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    [Information]
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 at 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 at facstaff.wisc.edu
Contact Address:
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
Fax: +1 (303) 492-2468
Email: nsidc at 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



Creation and Review Dates
DIF Creation Date: 2003-09-29
Last DIF Revision Date: 2014-07-07


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