---
access_dt: ~
aliases:
  - context: dataset
    lexicon: nsidc
    term: oai:nsidc/NSIDC-0204
    url: http://nsidc.org/api/dataset/2/oai?verb=GetRecord&metadataPrefix=dif&identifier=oai:nsidc/NSIDC-0204
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: "This data set combines various ancillary data (geolocation, surface roughness, and photographs) collected for the Iowa Soil Moisture Experiment 2002 (SMEX02) study region. The geolocation files provide geographic coordinates for the SMEX02 test sites, study areas, and instrumentation. The surface roughness data are derived from photographs taken at representative watershed sampling locations. The photographs were taken in the field at various locations during the experiments. Data are provided in ASCII text files and JPEG image 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: 'SMEX02 Land Surface Information: Geolocation, Surface Roughness, and Photographs'
doi: 10.5067/R9AA6FC58HES
end_time: 2002-07-12T00:00:00
files: []
href: http://52.38.26.42:8080/dataset/nasa-nsidcdaac-0204.yaml
identifier: nasa-nsidcdaac-0204
instrument_measurements:
  - dataset_identifier: nasa-nsidcdaac-0204
    display_name: landsat-7/enhanced-thematic-mapper-plus/nasa-nsidcdaac-0204
    instrument_identifier: enhanced-thematic-mapper-plus
    platform_identifier: landsat-7
    type: instrument_measurement
  - dataset_identifier: nasa-nsidcdaac-0204
    display_name: landsat-5/thematic-mapper/nasa-nsidcdaac-0204
    instrument_identifier: thematic-mapper
    platform_identifier: landsat-5
    type: instrument_measurement
lat_max: 42.66
lat_min: 41.7
lon_max: -93.2
lon_min: -93.8
name: 'SMEX02 Land Surface Information: Geolocation, Surface Roughness, and Photographs'
native_id: NSIDC-0204
parents: []
processing_level: ~
publication_year: ~
references: []
release_dt: 2004-01-30T00:00:00
scale: ~
scope: ~
spatial_extent: ~
spatial_ref_sys: ~
spatial_res: ~
start_time: 2002-06-22T00:00:00
temporal_extent: ~
temporal_resolution: ~
type: dataset
uri: /dataset/nasa-nsidcdaac-0204
url: http://nsidc.org/data/NSIDC-0204
variables: ~
version: ~
vertical_extent: ~