---
access_dt: ~
aliases:
  - context: dataset
    lexicon: nsidc
    term: oai:nsidc/NSIDC-0391
    url: http://nsidc.org/api/dataset/2/oai?verb=GetRecord&metadataPrefix=dif&identifier=oai:nsidc/NSIDC-0391
attributes: ~
cite_metadata: ~
cited_by: []
contributors:
  - display_name: 'Data Archive : National Snow & Ice Data Center Distributed Active Archive Center '
    href: http://52.38.26.42:8080/contributor/4440.yaml
    id: 4440
    organization:
      country_code: US
      display_name: National Snow & Ice Data Center Distributed Active Archive Center
      identifier: national-snow-ice-data-center-distributed-active-archive-center
      name: National Snow & Ice Data Center Distributed Active Archive Center
      organization_type_identifier: federal
      type: organization
      url: http://nsidc.org/daac
    organization_uri: /organization/national-snow-ice-data-center-distributed-active-archive-center
    person: {}
    person_id: ~
    person_uri: ~
    role_type_identifier: data_archive
    uri: /contributor/4440
data_qualifier: ~
description: "Notice to Data Users: The documentation for this data set was provided solely by the Principal Investigator(s) and was not further developed, thoroughly reviewed, or edited by NSIDC. Thus, support for this data set may be limited. This data set consists of Vegetation Water Content (VWC) data for two Soil Moisture Experiment 2004 (SMEX04) regional study areas: Arizona, USA and Sonora, Mexico. VWC was derived from the Normalized Difference Infrared Index (NDII) which was obtained from Landsat 5 Thematic Mapper (TM) imagery on 29 July 2004 and 30 August 2004. From these overpass images, daily images were generated by linearly interpolating each scene between the nearest available scenes. Individual data values must be divided by 100 to obtain the actual vegetation water content in kg/m2. The total volume for this data set is approximately 3.2 gigabytes. Data are provided as binary files 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."
description_attribution: ~
display_name: 'SMEX04 Vegetation Water Content Data, Arizona'
doi: 10.5067/ETYMZAA89NBN
end_time: 2004-08-30T00:00:00
files: []
href: http://52.38.26.42:8080/dataset/nasa-nsidcdaac-0391.yaml
identifier: nasa-nsidcdaac-0391
instrument_measurements:
  - dataset_identifier: nasa-nsidcdaac-0391
    display_name: landsat-5/thematic-mapper/nasa-nsidcdaac-0391
    instrument_identifier: thematic-mapper
    platform_identifier: landsat-5
    type: instrument_measurement
lat_max: 32.69
lat_min: 29.33
lon_max: -108.56
lon_min: -111.4
name: 'SMEX04 Vegetation Water Content Data, Arizona'
native_id: NSIDC-0391
parents: []
processing_level: ~
publication_year: ~
references: []
release_dt: 2009-05-15T00:00:00
scale: ~
scope: ~
spatial_extent: ~
spatial_ref_sys: ~
spatial_res: ~
start_time: 2004-07-29T00:00:00
temporal_extent: ~
temporal_resolution: ~
type: dataset
uri: /dataset/nasa-nsidcdaac-0391
url: http://nsidc.org/data/NSIDC-0391
variables: ~
version: ~
vertical_extent: ~