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Nimbus-7 SMMR Pathfinder Brightness Temperatures

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Entry ID

NSIDC-0036

Summary

The Nimbus-7 SMMR Pathfinder Brightness Temperatures data set contains global brightness temperatures in swath format (level 1b) from 25 October 1978 to 20 August 1987. The instrument obtained near-global coverage at five frequencies (6.6, 10.7, 18, 21, and 37 GHz) in both horizontal and vertical polarizations, at a constant incidence angle of 50.3 degrees, every six days. Data are stored as daily orbit files in compressed Hierarchical Data Format (HDF) and are available on FTP.

The Nimbus-7 SMMR Level 1B Pathfinder data set was created at the Jet Propulsion Laboratory (JPL) from a level 1A 'TAT' data set provided by the Goddard Space Flight Center (GFSC). The SMMR operated continuously from 25 Oct 1978 through 16 November 1987, at which time it began alernate-day operation. The processed level 1B SMMR data are stored as orbit files in HDF format. Each level 1B orbit file covers a time period of approximately 104.16 minutes. The file size for an uncompressed orbit file is approximately 4.3 megabytes. The total volume of the level 1B data set is approximately 70 gigabytes (compressed).

Geographic Coverage

 

Spatial Coordinates:
N: 84°     S: -84°     E: 180°     W: -180°    

Data Set Citation

Dataset Creator: Njoku, E. G.
Dataset Title: Nimbus-7 SMMR Pathfinder Brightness 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-0036.html

Temporal Coverage

Start Date: 1978-10-25
Stop Date: 1987-08-20

Location Keywords

  • GEOGRAPHIC REGION GLOBAL

Science Keywords

  • Spectral/Engineering Microwave Brightness Temperature

Ancillary Keywords

  • ANTENNA TEMPERATURES
  • EOSDIS
  • HDF
  • Passive Microwave
  • TAT
  • TDR

Platform

  • NIMBUS-7

Instrument

  • RADIOMETERS
  • SMMR Scanning Multichannel Microwave Radiometer

Project

  • EOSDIS Earth Observing System Data Information System
  • ESIP Earth Science Information Partners Program
  • NOAA/NASA PATHFINDER NOAA/NASA Pathfinder Program

Data Set Progress

complete

Data Center

NASA DAAC at the National Snow and Ice Data Center
Data Center URL: http://nsidc.org/daac/index.html

Data Center Personnel

Name: NSIDC User Services
Phone: 1 303 492-6199
Fax: 1 303 492-2468
Email: nsidc@nsidc.org
Contact Address:

  • National Snow and Ice Data Center
  • CIRES, 449 UCB
  • University of Colorado

City: Boulder
Province or State: CO
Postal Code: 80309-0449
Country: USA

National Snow and Ice Data Center
Data Center URL: http://nsidc.org

Data Center Personnel

Name: NSIDC User Services
Phone: 1 303 492-6199
Fax: 1 303 492-2468
Email: nsidc@nsidc.org
Contact Address:

  • National Snow and Ice Data Center
  • CIRES, 449 UCB
  • University of Colorado

City: Boulder
Province or State: CO
Postal Code: 80309-0449
Country: USA

Distribution

Distribution Media: FTP
Distribution Format: HDF

Personnel

Eni G. Njoku
Role: INVESTIGATOR
Phone: 1 818 354-3693
Email: njoku@lor.jpl.nasa.gov
Contact Address:

  • California Institute of Technology
  • Jet Propulsion Laboratory
  • M/S 300-233
  • Jet Propulsion Laboratory
  • California Institute of Technology
  • 4800 Oak Grove Drive

City: Pasadena
Province or State: CA
Postal Code: 91109-8099
Country: USA

NSIDC User Services
Role: TECHNICAL CONTACT
Phone: 1 303 492-6199 x
Fax: 1 303 492-2468 x
Email: nsidc@nsidc.org
Contact Address:

  • National Snow and Ice Data Center
  • CIRES, 449 UCB
  • University of Colorado

City: Boulder
Province or State: CO
Postal Code: 80309-0449
Country: USA

Reference

Njoku, E. G., B. Rague, and K. Flemming. 1995. Nimbus-7 Scanning Multichannel Microwave Radiometer (SMMR) Brightness Temperature Data (SMMR Level 1B Pathfinder). Jet Propulsion Laboratory. Pasadena, California USA. User's Guide for the Scanning Multichannel Microwave Radiometer Instrument First Year Antenna Temperature Data Set. Systems & Applied Sciences Corporation. August 1982. NASA Contract NAS5-27393.

Metadata Name and Version

Metadata Name: CEOS IDN DIF
Metadata Version: 9.7

Creation and Review Dates

DIF Creation Date: 2003-06-11
Last DIF Revision Date: 2013-08-13

Metadata Views

DIF Text-Only

Directory Interchange Format (DIF) in plain text

DIF XML

Directory Interchange Format (DIF) in Extensible Markup Language (XML)

FGDC HTML

U.S. Federal Geographic Data Committee (FGDC) Content Standard for Digital Geospatial Metadata (CSDGM)

ISO HTML

International Organization for Standardization (ISO) 19115:2003 Geographic Information Metadata

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