---
access_dt: ~
aliases:
  - context: dataset
    lexicon: nsidc
    term: oai:nsidc/NSIDC-0439
    url: http://nsidc.org/api/dataset/2/oai?verb=GetRecord&metadataPrefix=dif&identifier=oai:nsidc/NSIDC-0439
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 SMEX04 soil characteristics data set contains data for Sonora, Mexico as part of the 2004 Soil Moisture Experiment (SMEX04). The data were extracted from the Food and Agriculture Organization (FAO) digital soil map of the world. Parameters for this data set are soil texture in terms of percent sand and percent clay, and porosity. The temporal coverage is approximate, as these data are representative of the conditions present in the regional study area during the general timeline of the creation of the 2000 FAO soil map of the world. The total volume of this data set is approximately 110 kilobytes. Data are provided in an ASCII text file and are available via FTP. The Advanced Microwave Scanning Radiometer - Earth Observing System (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: http://nsidc.org/data/amsr_validation/index.html
display_name: 'SMEX04 Soil Characteristics Data: Sonora'
doi: 10.5067/0JRR5RV5FVFV
end_time: ~
files: []
href: http://52.38.26.42:8080/dataset/nasa-nsidcdaac-0439.yaml
identifier: nasa-nsidcdaac-0439
instrument_measurements: []
lat_max: 33
lat_min: 29
lon_max: -108
lon_min: -113
name: 'SMEX04 Soil Characteristics Data: Sonora'
native_id: NSIDC-0439
parents: []
processing_level: ~
publication_year: ~
references: []
release_dt: 2009-12-17T00:00:00
scale: ~
scope: ~
spatial_extent: ~
spatial_ref_sys: ~
spatial_res: ~
start_time: ~
temporal_extent: ~
temporal_resolution: ~
type: dataset
uri: /dataset/nasa-nsidcdaac-0439
url: http://nsidc.org/data/NSIDC-0439
variables: ~
version: ~
vertical_extent: ~