---
access_dt: ~
aliases:
  - context: dataset
    lexicon: nsidc
    term: oai:nsidc/NSIDC-0037
    url: http://nsidc.org/api/dataset/2/oai?verb=GetRecord&metadataPrefix=dif&identifier=oai:nsidc/NSIDC-0037
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: "The SMMR Antenna Temperatures (Nimbus-7) data set consists of antenna temperatures from passive microwave radiometers aboard NOAA's Nimbus-7 satellite. The instrument is the Scanning Multichannel Microwave Radiometer (SMMR). Each file consists of one days worth of data in swath format, i.e. the portion of the Earth's surface viewed by the scanning radiometer. Antenna temperature data are available from NSIDC from October 1978 to August 1987. SMMR was a ten channel passive microwave instrument using six conventional Dicke-type radiometers. It delivered orthogonally polarized antenna temperature data at five frequencies (6.6, 10.69, 18.0 21.0 and 37.0 GHz). The two 37.0 GHz radiometers operated continuously for each polarization. The other radiometers alternated polarizations on alternate scans. The size of each daily file is 35 MBytes. The data are distributed on FTP. Copies of the data format description are available upon request from NSIDC. The scanner operated only on alternate days, due to spacecraft power limitations. There are typically at least 14 days of coverage per month, although major data gaps occur in August: in August, 1982, the 4th, 8th, and 16th are missing for both polar regions; in August, 1984, the 13th through the 23rd are missing for both polar regions."
description_attribution: ~
display_name: Nimbus-7 SMMR Antenna Temperatures
doi: 10.5067/C8ZJDDHZAS59
end_time: 1987-08-20T00:00:00
files: []
href: http://52.38.26.42:8080/dataset/nasa-nsidcdaac-0037.yaml
identifier: nasa-nsidcdaac-0037
instrument_measurements: []
lat_max: 84
lat_min: -84
lon_max: 180
lon_min: -180
name: Nimbus-7 SMMR Antenna Temperatures
native_id: NSIDC-0037
parents: []
processing_level: ~
publication_year: ~
references: []
release_dt: 2003-06-11T00:00:00
scale: ~
scope: ~
spatial_extent: ~
spatial_ref_sys: ~
spatial_res: ~
start_time: 1978-10-25T00:00:00
temporal_extent: ~
temporal_resolution: ~
type: dataset
uri: /dataset/nasa-nsidcdaac-0037
url: http://nsidc.org/data/NSIDC-0037
variables: ~
version: ~
vertical_extent: ~