Entry_ID: NSIDC-0037
Entry_Title: Nimbus-7 SMMR Antenna Temperatures
Group: Data_Set_Citation
   Dataset_Creator: Gloersen, P. and E. A. Francis. 
   Dataset_Title: Nimbus-7 SMMR Antenna Temperatures
   Dataset_Release_Date: 2003-06-11
   Dataset_Release_Place: Boulder, Colorado USA
   Dataset_Publisher: NSIDC DAAC: NASA DAAC at the National Snow and Ice Data Center
   Online_Resource: http://nsidc.org/data/nsidc-0037.html
End_Group
Group: Personnel
   Role: Technical Contact
   First_Name: NSIDC
   Last_Name: User Services
   Email: nsidc@nsidc.org
   Phone: 1 303 492-6199 x
   Fax: 1 303  492-2468 x
   Group: Contact_Address
      Address: National Snow and Ice Data Center
      Address: CIRES, 449 UCB
      Address: University of Colorado
      City: Boulder
      Province_or_State: CO
      Postal_Code: 80309-0449
      Country: USA
   End_Group
End_Group
Group: Parameters
   Category: EARTH SCIENCE
   Topic: Spectral/Engineering
   Term: Microwave
   Variable_Level_1: Antenna Temperature
End_Group
Keyword: Antenna Temperature
Keyword: EOSDIS
Keyword: IDN_NODE GSFC/MSFC DAAC
Keyword: Passive Microwave
Keyword: Sensor Counts
Keyword: TA
Keyword: TAT
Sensor_Name: RADIOMETERS
Sensor_Name: SMMR > Scanning Multichannel Microwave Radiometer
Source_Name: NIMBUS-7
Source_Name: SATELLITES
Group: Temporal_Coverage
   Start_Date: 1978-10-25
   Stop_Date: 1987-08-20
End_Group
Data_Set_Progress: complete
Group: Spatial_Coverage
   Southernmost_Latitude: -84
   Northernmost_Latitude: 84
   Westernmost_Longitude: -180
   Easternmost_Longitude: 180
End_Group
Group: Location
   Location_Category: GEOGRAPHIC REGION
   Location_Type: GLOBAL
End_Group
Group: Location
   Location_Category: VERTICAL LOCATION
   Location_Type: TROPOSPHERE
End_Group
Project: EOSDIS > Earth Observing System Data Information System
Project: ESIP > Earth Science Information Partners Program
Data_Set_Language: English
Group: Data_Center
   Data_Center_Name: NASA DAAC > NASA DAAC at the National Snow and Ice Data Center
   Data_Center_URL: http://nsidc.org/daac/index.html
   Group: Personnel
      Role: Data Center Contact
      First_Name: NSIDC
      Last_Name: User Services
      Email: nsidc@nsidc.org
      Phone: 1 303 492-6199 
      Fax: 1 303  492-2468 
      Group: Contact_Address
         Address: National Snow and Ice Data Center
         Address: CIRES, 449 UCB
         Address: University of Colorado
         City: Boulder
         Province_or_State: CO
         Postal_Code: 80309-0449
         Country: USA
      End_Group
   End_Group
End_Group
Group: Data_Center
   Data_Center_Name: NSIDC > National Snow and Ice Data Center
   Data_Center_URL: http://nsidc.org
   Group: Personnel
      Role: Data Center Contact
      First_Name: NSIDC
      Last_Name: User Services
      Email: nsidc@nsidc.org
      Phone: 1 303 492-6199 
      Fax: 1 303  492-2468 
      Group: Contact_Address
         Address: National Snow and Ice Data Center
         Address: CIRES, 449 UCB
         Address: University of Colorado
         City: Boulder
         Province_or_State: CO
         Postal_Code: 80309-0449
         Country: USA
      End_Group
   End_Group
End_Group
Group: Distribution
   Distribution_Media: FTP
   Distribution_Format: HDF
End_Group
Group: Reference

   Systems and Applied Sciences Corporation, 1982: Users' Guide for the Scanning 
   Multichannel Microwave Radiometer Instrument First Year Antenna Temperature 
   Data Set.  Systems and Applied Sciences Corporation Technical Document.

End_Group
Group: Summary

   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.

End_Group
IDN_Node: USA/NASA
Metadata_Name: CEOS IDN DIF
Metadata_Version: 9.7
DIF_Creation_Date: 2003-06-11
Last_DIF_Revision_Date: 2013-08-26
DIF_Revision_History:  updated version to 1