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NOAA/NSIDC Climate Data Record of Passive Microwave Sea Ice Concentration, Version 3.1 (Version Superseded)

Published by NOAA National Centers for Environmental Information | National Oceanic and Atmospheric Administration, Department of Commerce | Catalog Last Checked: August 03, 2026 at 06:52 AM | Dataset Last Updated: August 22, 2017 at 12:00 AM
*Note: This dataset version has been superseded by a newer version. It is highly recommended that users access the current version. Users should only use this version for special cases, such as reproducing studies that used this version.* This data set provides a Climate Data Record (CDR) of sea ice concentration from passive microwave data. The CDR algorithm output is a rule-based combination of ice concentration estimates from two well-established algorithms: the NASA Team (NT) algorithm and NASA Bootstrap (BT) algorithm. The CDR is a consistent, daily and monthly time series of sea ice concentrations from 09 July 1987 through the most recent processing for both the north and south polar regions. In addition, three other sea ice concentration products are included with the CDR that extend the sea ice measurements back to 01 November 1978. However, these three products are not included in the official CDR because processing the older data in a way that follows the standards of a CDR is not currently possible. All data are on a 25 km x 25 km grid. Note: A near-real-time version of this data set also exists to fill the gap between the time that this data set is updated through to the present. The data set is called the Near-Real-Time NOAA/NSIDC Climate Data Record of Passive Microwave Sea Ice Concentration (https://nsidc.org/data/g10016).

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Earth Science > Cryosphere > Sea Ice > Sea Ice Concentration Earth Science > Oceans > Sea Ice > Sea Ice Concentration Oceanic - Surface - Sea Ice Geographic Region > Polar Ocean > Arctic Ocean > Beaufort Sea Ocean > Southern Ocean > Ross Sea Ocean > Southern Ocean > Weddell Sea Continent > Antarctica

Complete Metadata
@type dcat:Dataset
accessLevel non-public
contactPoint 
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describedByType application/octet-steam
description *Note: This dataset version has been superseded by a newer version. It is highly recommended that users access the current version. Users should only use this version for special cases, such as reproducing studies that used this version.* This data set provides a Climate Data Record (CDR) of sea ice concentration from passive microwave data. The CDR algorithm output is a rule-based combination of ice concentration estimates from two well-established algorithms: the NASA Team (NT) algorithm and NASA Bootstrap (BT) algorithm. The CDR is a consistent, daily and monthly time series of sea ice concentrations from 09 July 1987 through the most recent processing for both the north and south polar regions. In addition, three other sea ice concentration products are included with the CDR that extend the sea ice measurements back to 01 November 1978. However, these three products are not included in the official CDR because processing the older data in a way that follows the standards of a CDR is not currently possible. All data are on a 25 km x 25 km grid. Note: A near-real-time version of this data set also exists to fill the gap between the time that this data set is updated through to the present. The data set is called the Near-Real-Time NOAA/NSIDC Climate Data Record of Passive Microwave Sea Ice Concentration (https://nsidc.org/data/g10016).
distribution 
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identifier https://data.noaa.gov/waf/NOAA/NESDIS/ncei/aim/iso/xml/C01550.xml
issued 2017-08-22T00:00:00.000+00:00
keyword 
[
  "Earth Science > Cryosphere > Sea Ice > Sea Ice Concentration",
  "Earth Science > Oceans > Sea Ice > Sea Ice Concentration",
  "Oceanic - Surface - Sea Ice",
  "Geographic Region > Polar",
  "Ocean > Arctic Ocean > Beaufort Sea",
  "Ocean > Southern Ocean > Ross Sea",
  "Ocean > Southern Ocean > Weddell Sea",
  "Continent > Antarctica",
  "NOAA Climate Data Record (CDR) Program",
  "NOAA OneStop Project",
  "10 km - < 50 km or approximately .09 degree - < .5 degree",
  "Earth Remote Sensing Instruments > Passive Remote Sensing > Spectrometers/Radiometers > Imaging Spectrometers/Radiometers > SSMIS > Special Sensor Microwave Imager/Sounder",
  "Earth Remote Sensing Instruments > Passive Remote Sensing > Spectrometers/Radiometers > Imaging Spectrometers/Radiometers > SSM/I > Special Sensor Microwave/Imager",
  "Earth Remote Sensing Instruments > Passive Remote Sensing > Spectrometers/Radiometers > Imaging Spectrometers/Radiometers > SMMR > Scanning Multichannel Microwave Radiometer",
  "Earth Observation Satellites > DMSP (Defense Meteorological Satellite Program) > DMSP 5D-2/F8 > Defense Meteorological Satellite Program-F8",
  "Earth Observation Satellites > DMSP (Defense Meteorological Satellite Program) > DMSP 5D-2/F11 > Defense Meteorological Satellite Program-F11",
  "Earth Observation Satellites > DMSP (Defense Meteorological Satellite Program) > DMSP 5D-2/F13 > Defense Meteorological Satellite Program-F13",
  "Earth Observation Satellites > DMSP (Defense Meteorological Satellite Program) > DMSP 5D-3/F17 > Defense Meteorological Satellite Program-F17",
  "Earth Observation Satellites > DMSP (Defense Meteorological Satellite Program) > DMSP 5D-3/F18 > Defense Meteorological Satellite Program-F17",
  "Earth Observation Satellites > NIMBUS > Nimbus-7",
  "DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce",
  "DOC/NOAA/NESDIS/NCDC > National Climatic Data Center, NESDIS, NOAA, U.S. Department of Commerce",
  "NSIDC > National Snow and Ice Data Center",
  "01B-11",
  "01B-11a"
]
language 
[]
license https://creativecommons.org/publicdomain/zero/1.0/
modified 2017-08-22T00:00:00.000+00:00
publisher 
{
  "name": "NOAA National Centers for Environmental Information",
  "@type": "org:Organization"
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references 
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]
rights otherRestrictions
spatial 180.0,-89.84,-180.0,89.84
temporal 1978-07-01T00:00:00+00:00/2019-12-31T00:00:00+00:00
theme 
[
  "geospatial"
]
title NOAA/NSIDC Climate Data Record of Passive Microwave Sea Ice Concentration, Version 3.1 (Version Superseded)

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