Data

Circum-Antarctic landfast sea ice distribution at minimum extent, 2018-2022

Australian Ocean Data Network
Fraser, A. ; FRASER, ALEXANDER
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ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rfr_id=info%3Asid%2FANDS&rft_id=http://data.aad.gov.au/metadata/records/AAS_4116_Fast_ice_minimum_18to22&rft.title=Circum-Antarctic landfast sea ice distribution at minimum extent, 2018-2022&rft.identifier=http://data.aad.gov.au/metadata/records/AAS_4116_Fast_ice_minimum_18to22&rft.publisher=Australian Antarctic Data Centre&rft.description=This dataset (provided as a series of CF-compatible netcdf file) consists of 5 maps of Antarctic landfast sea ice, derived from NASA MODIS imagery. There is one map per year, spanning the 5 year period from 2018 to 2022. The one map per year covers the time period from Day-Of-Year 61-75, which is the time of yearly minimum extent. The data are provided in a polar stereographic projection with a latitude of true scale at 70 S (i.e., to maintain compatibility with the NSIDC polar stereographic projection).Progress Code: completedStatement: This dataset broadly follows the methodology given in Fraser et al., 2020 (https://doi.org/10.5194/essd-12-2987-2020) but contains no automation (i.e., all fast-ice edges were manually extracted) due to the relatively small amount of effort required to manually extract only 5 maps.&rft.creator=Fraser, A. &rft.creator=FRASER, ALEXANDER &rft.date=2022&rft.coverage=westlimit=-180; southlimit=-83; eastlimit=180; northlimit=-60&rft.coverage=westlimit=-180; southlimit=-83; eastlimit=180; northlimit=-60&rft_rights=This metadata record is publicly available.&rft_rights=These data are publicly available for download from the provided URL.&rft_rights= https://creativecommons.org/licenses/by/4.0/legalcode&rft_rights=This data set conforms to the CCBY Attribution License (http://creativecommons.org/licenses/by/4.0/). Please follow instructions listed in the citation reference provided at http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=AAS_4116_Fast_ice_minimum_18to22 when using these data. http://creativecommons.org/licenses/by/4.0/).&rft_rights=Portable Network Graphic&rft_rights=https://i.creativecommons.org/l/by/3.0/88x31.png&rft_rights=Creative Commons by Attribution logo&rft_rights=Attribution 4.0 International (CC BY 4.0)&rft_rights=Legal code for Creative Commons by Attribution 4.0 International license&rft_rights=Attribution 4.0 International (CC BY 4.0)&rft_rights= https://creativecommons.org/licenses/by/4.0/legalcode&rft_subject=oceans&rft_subject=EARTH SCIENCE > OCEANS > SEA ICE&rft_subject=EARTH SCIENCE > OCEANS > SEA ICE > ICE EXTENT&rft_subject=EARTH SCIENCE > OCEANS > SEA ICE > ICE TYPES&rft_subject=EARTH SCIENCE > CRYOSPHERE > SEA ICE > ICE EXTENT&rft_subject=EARTH SCIENCE > CRYOSPHERE > SEA ICE > ICE TYPES&rft_subject=FAST ICE&rft_subject=LANDFAST SEA ICE&rft_subject=MODIS > Moderate-Resolution Imaging Spectroradiometer&rft_subject=Aqua > "Earth Observing System&rft_subject=Terra > "Earth Observing System&rft_subject=AMD&rft_subject=AMD/AU&rft_subject=CEOS&rft_subject=GEOGRAPHIC REGION > POLAR&rft_subject=CONTINENT > ANTARCTICA&rft_subject=OCEAN > SOUTHERN OCEAN&rft.type=dataset&rft.language=English Access the data
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This data set conforms to the CCBY Attribution License (http://creativecommons.org/licenses/by/4.0/).

Please follow instructions listed in the citation reference provided at http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=AAS_4116_Fast_ice_minimum_18to22 when using these data.
http://creativecommons.org/licenses/by/4.0/).

Attribution 4.0 International (CC BY 4.0)

https://creativecommons.org/licenses/by/4.0/legalcode

This metadata record is publicly available.

These data are publicly available for download from the provided URL.

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Attribution 4.0 International (CC BY 4.0)

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Brief description

This dataset (provided as a series of CF-compatible netcdf file) consists of 5 maps of Antarctic landfast sea ice, derived from NASA MODIS imagery. There is one map per year, spanning the 5 year period from 2018 to 2022. The one map per year covers the time period from Day-Of-Year 61-75, which is the time of yearly minimum extent. The data are provided in a polar stereographic projection with a latitude of true scale at 70 S (i.e., to maintain compatibility with the NSIDC polar stereographic projection).

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Progress Code: completed
Statement: This dataset broadly follows the methodology given in Fraser et al., 2020 (https://doi.org/10.5194/essd-12-2987-2020) but contains no automation (i.e., all fast-ice edges were manually extracted) due to the relatively small amount of effort required to manually extract only 5 maps.

Notes

Purpose
This circum-Antarctic dataset of landfast sea ice minimum yearly extent a) illustrates the large inter-annual variability of fast-ice minimum extent, and b) indicates a sharp decline in minimum fast-ice extent in 2022.

Data time period: 2018-03-02 to 2022-03-17

This dataset is part of a larger collection

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180,-60 180,-83 0,-83 -180,-83 -180,-60 0,-60 180,-60

0,-71.5

text: westlimit=-180; southlimit=-83; eastlimit=180; northlimit=-60

Subjects
AMD | AMD/AU | Aqua > "Earth Observing System | CEOS | CONTINENT > ANTARCTICA | EARTH SCIENCE > CRYOSPHERE > SEA ICE > ICE EXTENT | EARTH SCIENCE > CRYOSPHERE > SEA ICE > ICE TYPES | EARTH SCIENCE > OCEANS > SEA ICE | EARTH SCIENCE > OCEANS > SEA ICE > ICE EXTENT | EARTH SCIENCE > OCEANS > SEA ICE > ICE TYPES | FAST ICE | GEOGRAPHIC REGION > POLAR | LANDFAST SEA ICE | MODIS > Moderate-Resolution Imaging Spectroradiometer | OCEAN > SOUTHERN OCEAN | Terra > "Earth Observing System | oceans |

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Other Information
Download the dataset. (GET DATA > DIRECT DOWNLOAD)

uri : https://data.aad.gov.au/eds/5524/download

Identifiers
  • global : AAS_4116_Fast_ice_minimum_18to22
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