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Nimbus-7 SMMR Pathfinder Daily EASE-Grid Brightness Temperatures

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Entry ID

NSIDC-0071

Summary

This data set consists of brightness temperatures acquired from the Scanning Multichannel Microwave Radiometer (SMMR) on board the Nimbus-7 Pathfinder satellite. The brightness temperatures have been gridded onto the Equal-Area Scalable Earth Grid (EASE-Grid) and are presented in three different projections: Northern Hemisphere, Southern Hemisphere, and global. The SMMR EASE-Grid data were derived from SMMR brightness temperatures in swath format (level 1b data). Coverage is global, and data are available from 25 October 1978 through 20 August 1987. The spatial resolution is 25 km for all channels (6.6, 10.7, 18, 21, and 37 GHz for both vertical and horizontal polarizations). Both brightness temperatures and time files are provided for a given projection in flat binary format for each day. The brightness temperatures are provided in tenths of kelvins and the time files are in minutes since 0:00 Coordinated Universal Time (UTC) of the date of the enclosing file. Data are available via FTP.

Geographic Coverage

 

Spatial Coordinates:
N: 90°     S: -90°     E: 180°     W: -180°    

Data Set Citation

Dataset Creator: Knowles, K., E. G. Njoku, R. Armstrong, and M. Brodzik.
Dataset Title: Nimbus-7 SMMR Pathfinder Daily EASE-Grid Brightness Temperatures
Dataset Release Date: 2000-01-01
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-0071.html

Temporal Coverage

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

Data Resolution

Latitude Resolution: 25 km
Longitude Resolution: 25 km

Latitude Resolution: 25 km
Longitude Resolution: 25 km
Temporal Resolution: 1 day

Location Keywords

  • GEOGRAPHIC REGION GLOBAL
  • GEOGRAPHIC REGION NORTHERN HEMISPHERE
  • GEOGRAPHIC REGION SOUTHERN HEMISPHERE

Science Keywords

  • Spectral/Engineering Microwave Brightness Temperature
  • Spectral/Engineering Microwave Brightness Temperature

Ancillary Keywords

  • Antarctic
  • Arctic
  • BRIGHTNESS TEMPERATURES
  • Ease
  • EASE-Grid
  • EOSDIS
  • Global
  • Gridded Data
  • NIMBUS-7
  • Northern Hemisphere
  • Passive Microwave
  • Pathfinder
  • Polar
  • RADIOMETER
  • Scanning Multichannel Microwave Radiometer
  • SMMR
  • Southern Hemisphere

ISO Topic Category (View Definitions)

  • Climatology/Meteorology/Atmosphere

Platform

  • NIMBUS-7

Instrument

  • 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

Quality

Quality indicator flags were provided in the level 1b data for the scan status word of each scan. These flags indicated conditions in the original data or in the data processing that may have given rise to reduced-quality calibrated output. None of these data were eliminated from the gridded product

Data Set Progress

complete

Originating Center

NSIDC

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 Size: 83 MB
Distribution Format: Binary

Personnel

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

Kenneth Knowles
Role: INVESTIGATOR
Contact Address:

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

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

Mary J. Brodzik
Role: INVESTIGATOR
Email: brodzik@nsidc.org
Contact Address:

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

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

Richard Armstrong
Role: INVESTIGATOR
Phone: 1 303 492-6199
Fax: 1 303 492-2468
Email: rlax@nsidc.org
Contact Address:

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

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

Richard Armstrong
Role: INVESTIGATOR
Phone: 1 303 492-6199
Fax: 1 303 492-2468
Email: rlax@nsidc.org
Contact Address:

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

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

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

Related URL

VIEW PROJECT HOME PAGE
NOAA/NASA Polar Pathfinder Data

VIEW PROJECT HOME PAGE
Polar Pathfinder Program

VIEW RELATED INFORMATION
All About EASE-Grid

VIEW RELATED INFORMATION
DMSP SSM/I Daily Polar Gridded Brightness Temperatures

VIEW RELATED INFORMATION
DMSP SSM/I Pathfinder Daily EASE-Grid Brightness Temperatures

VIEW RELATED INFORMATION
Nimbus-5 ESMR Polar Gridded Brightness Temperatures and Sea Ice Concentrations

VIEW RELATED INFORMATION
Nimbus-7 SMMR Pathfinder Brightness Temperatures

VIEW RELATED INFORMATION
Nimbus-7 SMMR Polar Radiances and Arctic and Antarctic Sea Ice Concentrations

Reference

Brodzik, M. J. 1998. The EASE-Grid, A Versatile Set of Equal-Area Projections and Grids. Special report to the National Snow and Ice Data Center, Boulder, CO. Frances, E. A. 1987. Calibration of the Nimbus-7 Scanning Multichannel Microwave Radiometer (SMMR) 1979-1984. Master's Thesis, College of Oceanography, Oregon State University, Corvallis, OR.

Fu, C. C., D. Han, S. T. Kim, and P. Gloersen. 1988. User's Guide for the Nimbus-7 Scanning Multichannel Microwave Radiometer (SMMR) CELL-ALL tape. NASA Reference Publication #1210, National Aeronautics and Space Administration, Washington, D.C.

Gloersen, P., W. J. Campbell, D. J. Cavalieri, J. C. Comiso, C. L. Parkinson, and H. J. Zwally. 1992. Arctic and Antarctic Sea Ice, 1978-1987: Satellite Passive Microwave Observations and Analysis. NASA Special Publication SP-511. National Aeronautics and Space Administration. Washington, D.C.

Gloersen, P. 1987. In-orbit Calibration Adjustment of the Nimbus-7 SMMR. NASA Technical Memorandum #100678, National Aeronautics and Space Administration. Washington, D.C.

Gloersen, P., D. J. Cavalieri, A. T. C. Chang, T. T. Wilheit, W. J. Campbell, O. M. Johannessen, K. B. Katsaros, K. F. Kunzi, D. B. Ross, D. Staelin, E. P. L. Windsor, F. T. Barath, P. Gudmansen, E. Langham, and R. Ramseier. 1984. A Summary of Results from the First Nimbus-G SMMR Observations. Journal of Geophysical Research 89:5335-44.

Gloersen, P. and F. T. Barath. 1977. A Scanning Multichannel Microwave Radiometer for Nimbus-7 and Seasat-A. IEEE Journal of Oceanic Engineering OE-2:172-178.

Hofer, R. and E. G. Njoku. 1981. Regression Techniques for Oceanographic Parameter Retrievals Using Spaceborne Microwave Radiometry. IEEE Transactions on Geoscience and Remote Sensing GE-19:178-89.

Knowles, Kenneth W. 1993. Points, Pixels, Grids, and Cells: A Mapping and Gridding Primer. Special report to the National Snow and Ice Data Center, Boulder, CO.

Liu, W. T. and D. R. Mock. 1986. Evaluation of Geophysical Parameters Measured by the Nimbus-7 Microwave Radiometer for the TOGA Heat Exchange Project. JPL Publication 86-50, Jet Propulsion Laboratory, Pasadena, CA.

Madrid, C. R. (Ed.). 1978. The Nimbus 7 User's Guide. Landsat/Nimbus Project, Goddard Space Flight Center, Greenbelt, MD.

McMillan, D. S. and D. Han. 1990. Long-term Trends and Instrument Warm-up Effects in Nimbus-7 Scanning Multichannel Microwave Radiometer Radiances. (Unpublished Document), NASA Goddard Space Flight Center, Greenbelt, MD.

Milman, A. S. and T. T. Wilheit. 1985. Sea Surface Temperatures from the Scanning Multichannel Microwave Radiometer on Nimbus-7. Journal of Geophysical Research 90:11631-41.

Njoku, E. G., B. Rague, and K. Fleming. 1998. Nimbus-7 SMMR Pathfinder Brightness Temperature Data. JPL Publication 98-4. Jet Propulsion Laboratory. Pasadena, CA. Njoku, E. G. 1980. Antenna Pattern Correction Procedures for the Scanning Multichannel Microwave Radiometer (SMMR). Boundary-Layer Meteorology 18:79-98. Njoku, E. G., J. M. Stacey, and F. T. Barath. 1980. The Seasat Scanning Multichannel Microwave Radiometer (SMMR): Instrument Description and Performance. IEEE Journal of Oceanic Engineering OE-5:125-37.

Swanson, P. N. and A. L. Riley. 1980. The Seasat Scanning Multichannel Microwave Radiometer (SMMR): Radiometric Calibration Algorithm Development and Performance. IEEE Journal of Oceanic Engineering OE-5:116-24.

Systems and Applied Sciences Corporation. 1982. User's Guide for the Scanning Multichannel Microwave Radiometer Instrument First-Year Antenna Temperature Data Set. SASC, Contractor Report #NAS5-27393. Goddard Space Flight Center. Greenbelt, MD.

Wentz, F. J. and E. A. Frances. 1992. Nimbus-7 SMMR Ocean Products 1979-1984. RSS Technical Report 033192. Remote Sensing Systems. Santa Rosa, CA.

Metadata Name and Version

Metadata Name: CEOS IDN DIF
Metadata Version: 9.7

Creation and Review Dates

DIF Creation Date: 2000-01-01
Last DIF Revision Date: 2014-06-16

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