G02202_1

NOAA/NSIDC Climate Data Record of Passive Microwave Sea Ice Concentration, Version 1

Version 1 eng; usa
  • Abstract
    Note: If necessary, Version 1 can be accessed by contacting the NCDC service desk at ncdc.orders@noaa.gov. However, we highly suggest using the latest version of this data set.
    This data set provides a Climate Data Record (CDR) of sea ice concentration from passive microwave data. It provides a consistent, daily and monthly time series of sea ice concentrations from 09 July 1987 through 31 December 2007 for both the north and south polar regions on a 25 km x 25 km grid. The NOAA/NSIDC CDR is based on the recommendations from the National Research Council (NRC) (2004). It is produced from gridded brightness temperatures from the Defense Meteorological Satellite Program (DMSP) series of Special Sensor Microwave Imager (SSM/I) passive microwave radiometers: F-8, F-11, and F-13. The NOAA/NSIDC CDR sea ice concentrations are an estimate of the fraction of ocean area covered by sea ice that is produced by combining concentration estimates created using two algorithms developed at the NASA Goddard Space Flight Center (GSFC): the NASA Team algorithm (Cavalieri et al., 1984) and the Bootstrap algorithm (Comiso, 1986). NSIDC applies the individual algorithms to brightness temperature data from Remote Sensing Systems, Inc. (RSS). The data are gridded on the NSIDC polar stereographic grid with 25 x 25 km grid cells and are available in netCDF file format. Each file includes four different sea ice concentration variables: a variable with the primary CDR sea ice concentrations created by NSIDC and three variables with sea ice concentrations created by Goddard. The three Goddard-produced sea ice concentrations are the Goddard NASA Team algorithm sea ice concentrations, the Goddard Bootstrap sea ice concentrations, and a merged version of the two sea ice concentrations. These Goddard-produced sea ice concentrations are included in the data files for a number of reasons. First, the merged Goddard NASA Team/Bootstrap sea ice concentrations are an ancillary data set that is analogous to the NOAA/NSIDC CDR data but that adds late 1978 through mid 1987 data to the record. A different instrument, the Scanning Multichannel Microwave Radiometer (SMMR), was the source for the brightness temperatures from this period. Sea ice concentrations from the extended period are not part of the primary NSIDC-produced CDR record because complete documentation of the SMMR brightness temperature processing method is not available. Second, the separate Goddard NASA Team and Bootstrap sea ice concentrations are provided for reference. Variables containing standard deviation, quality flags, and projection information are also included in the netCDF files.
  • Purpose
    Scientific Research

Data Identification Fields:

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    Processing Level

    NA

    Quality
    Collection Progress

    Complete

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    Science Keywords
    • EARTH SCIENCE
    • Cryosphere
    • Sea Ice
    • Sea Ice Concentration
    • EARTH SCIENCE
    • Oceans
    • Sea Ice
    • Sea Ice Concentration
Other Descriptive Keywords
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ISO Topic Categories
  • CLIMATOLOGY/METEOROLOGY/ATMOSPHERE

Acquisition Information Fields:

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Platforms
  • Earth Observation Satellites
    DMSP
    Instruments
    • SSM/I
  • Earth Observation Satellites
    DMSP 5D-2/F11
    Instruments
    • SSM/I
  • Earth Observation Satellites
    DMSP 5D-2/F13
    Instruments
    • SSM/I
  • Earth Observation Satellites
    DMSP 5D-2/F8
    Instruments
    • SSM/I
  • Earth Observation Satellites
    Nimbus-7
    Instruments
    • SMMR

Temporal Information Fields:

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Spatial Information Fields:

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    Coverage Type Zone Identifier Geometry Granule Representation
    HORIZONTAL CARTESIAN GEODETIC
Location Keywords
    • Continent
    • Antarctica
    • Geographic Region
    • Arctic
    • Geographic Region
    • Polar

Data Centers

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  • National Snow and Ice Data Center
    ARCHIVER

    National Snow and Ice Data Center
    CIRES, 449 UCB
    University of Colorado
    Boulder, CO 80309-0449

    • 1 303 492 6199
    • 1 303 492 2468
    • Email
  • National Snow and Ice Data Center
    DISTRIBUTOR

    National Snow and Ice Data Center
    CIRES, 449 UCB
    University of Colorado
    Boulder, CO 80309-0449

    • 1 303 492 6199
    • 1 303 492 2468
    • Email

Data Contacts

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  • F.
    Technical Contact
    F. Fetterer

    449 UCB
    Boulder, CO 80309

  • Ruth
    Technical Contact
    Ruth Duerr

    449 University of Colorado at Boulder
    Boulder, Colorado 80027

  • Julienne
    Technical Contact
    Julienne Stroeve

    National Snow and Ice Data Center
    CIRES, 449 UCB
    University of Colorado
    Boulder, CO 80309

  • Sean
    Technical Contact
    Sean Mallory

    Boulder, CO

  • Sean
    Technical Contact
    Sean Mallory

    Boulder, CO

  • Ruth
    Technical Contact
    Ruth Duerr

    449 University of Colorado at Boulder
    Boulder, Colorado 80027

  • Julienne
    Technical Contact
    Julienne Stroeve

    National Snow and Ice Data Center
    CIRES, 449 UCB
    University of Colorado
    Boulder, CO 80309

  • National Snow and Ice Data Center
    User Services
    National Snow and Ice Data Center

    Boulder, Colorado

    This contact does not have any contact mechanisms listed.

  • Walt
    Data Center Contact
    Walt Meier

    National Snow and Ice Data Center

    Boudler, CO 80309

  • Matthew
    Data Center Contact
    Matthew Savoie

    National Snow and Ice Data Center

    CIRES, 449 UCB
    University of Colorado
    Boulder, CO 80309-0449

  • NSIDC
    Data Center Contact
    NSIDC Services

    National Snow and Ice Data Center

    CIRES, 449 UCB
    University of Colorado
    Boulder, CO 80309-0449

    • 1 303 492 6199
    • 1 303 492 2468
    • Email
  • Walt
    Data Center Contact
    Walt Meier

    National Snow and Ice Data Center

    Boudler, CO 80309

  • Florence
    Data Center Contact
    Florence Fetterer

    National Snow and Ice Data Center

    Boulder, CO

  • Matthew
    Data Center Contact
    Matthew Savoie

    National Snow and Ice Data Center

    CIRES, 449 UCB
    University of Colorado
    Boulder, CO 80309-0449

  • Walt
    Data Center Contact
    Walt Meier

    National Snow and Ice Data Center

    Boudler, CO 80309

  • Matthew
    Data Center Contact
    Matthew Savoie

    National Snow and Ice Data Center

    CIRES, 449 UCB
    University of Colorado
    Boulder, CO 80309-0449

  • NSIDC
    Data Center Contact
    NSIDC Services

    National Snow and Ice Data Center

    CIRES, 449 UCB
    University of Colorado
    Boulder, CO 80309-0449

    • 1 303 492 6199
    • 1 303 492 2468
    • Email
  • Walt
    Data Center Contact
    Walt Meier

    National Snow and Ice Data Center

    Boudler, CO 80309

  • Florence
    Data Center Contact
    Florence Fetterer

    National Snow and Ice Data Center

    Boulder, CO

  • Matthew
    Data Center Contact
    Matthew Savoie

    National Snow and Ice Data Center

    CIRES, 449 UCB
    University of Colorado
    Boulder, CO 80309-0449

Collection Citations Fields:

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    Collection Citations
    • NOAA/NSIDC Climate Data Record of Passive Microwave Sea Ice Concentration, Version 1
      1

      Published by: National Snow and Ice Data Center