An intercomparison of Antarctic sea ice extent datasets from the US Joint Ice Center (JIC) and satellite passive microwave observations for 1979–88
US Joint Ice Center (JIC) Antarctic sea ice extent data, the longest continuous series of its kind for this part of the world, are compared with direct passive microwave-based estimates to assess their overall consistency both spatially and temporally in the period 1979–88. Using ice edge position a...
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Cambridge University Press (CUP)
1998
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Online Access: | http://dx.doi.org/10.1017/s0954102098000273 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102098000273 |
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crcambridgeupr:10.1017/s0954102098000273 2024-03-03T08:37:48+00:00 An intercomparison of Antarctic sea ice extent datasets from the US Joint Ice Center (JIC) and satellite passive microwave observations for 1979–88 Harangozo, S.A. 1998 http://dx.doi.org/10.1017/s0954102098000273 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102098000273 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Antarctic Science volume 10, issue 2, page 204-214 ISSN 0954-1020 1365-2079 Geology Ecology, Evolution, Behavior and Systematics Oceanography journal-article 1998 crcambridgeupr https://doi.org/10.1017/s0954102098000273 2024-02-08T08:43:15Z US Joint Ice Center (JIC) Antarctic sea ice extent data, the longest continuous series of its kind for this part of the world, are compared with direct passive microwave-based estimates to assess their overall consistency both spatially and temporally in the period 1979–88. Using ice edge position as a proxy for ice extent, the comparison reveals close agreement in most years, in monthly averaged ice edge positions in all Antarctic regions at the time of maximum ice extent, and also in autumn and spring in the Ross and Weddell Seas. Unexpectedly, JIC relative overestimation prevails during both autumn and spring in some other areas. Previously noted differences in JIC and passive microwave total Antarctic extent in 1979–80 result mainly from problems in the Ross Sea. Reasons for the various discrepancies may lie in differences in the methods used to produce the datasets especially in spring but those in autumn seem to often arise for other reasons. It is found that the prevalent discrepancies in the Ross Sea in 1979–80 as well as those in spring in other regions from 1981 coincide with periods of ice extent change and the evolution/intensification of ice extent anomalies. Article in Journal/Newspaper Antarc* Antarctic Antarctic Science Ross Sea Sea ice Cambridge University Press Antarctic Ross Sea Weddell Antarctic Science 10 2 204 214 |
institution |
Open Polar |
collection |
Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
topic |
Geology Ecology, Evolution, Behavior and Systematics Oceanography |
spellingShingle |
Geology Ecology, Evolution, Behavior and Systematics Oceanography Harangozo, S.A. An intercomparison of Antarctic sea ice extent datasets from the US Joint Ice Center (JIC) and satellite passive microwave observations for 1979–88 |
topic_facet |
Geology Ecology, Evolution, Behavior and Systematics Oceanography |
description |
US Joint Ice Center (JIC) Antarctic sea ice extent data, the longest continuous series of its kind for this part of the world, are compared with direct passive microwave-based estimates to assess their overall consistency both spatially and temporally in the period 1979–88. Using ice edge position as a proxy for ice extent, the comparison reveals close agreement in most years, in monthly averaged ice edge positions in all Antarctic regions at the time of maximum ice extent, and also in autumn and spring in the Ross and Weddell Seas. Unexpectedly, JIC relative overestimation prevails during both autumn and spring in some other areas. Previously noted differences in JIC and passive microwave total Antarctic extent in 1979–80 result mainly from problems in the Ross Sea. Reasons for the various discrepancies may lie in differences in the methods used to produce the datasets especially in spring but those in autumn seem to often arise for other reasons. It is found that the prevalent discrepancies in the Ross Sea in 1979–80 as well as those in spring in other regions from 1981 coincide with periods of ice extent change and the evolution/intensification of ice extent anomalies. |
format |
Article in Journal/Newspaper |
author |
Harangozo, S.A. |
author_facet |
Harangozo, S.A. |
author_sort |
Harangozo, S.A. |
title |
An intercomparison of Antarctic sea ice extent datasets from the US Joint Ice Center (JIC) and satellite passive microwave observations for 1979–88 |
title_short |
An intercomparison of Antarctic sea ice extent datasets from the US Joint Ice Center (JIC) and satellite passive microwave observations for 1979–88 |
title_full |
An intercomparison of Antarctic sea ice extent datasets from the US Joint Ice Center (JIC) and satellite passive microwave observations for 1979–88 |
title_fullStr |
An intercomparison of Antarctic sea ice extent datasets from the US Joint Ice Center (JIC) and satellite passive microwave observations for 1979–88 |
title_full_unstemmed |
An intercomparison of Antarctic sea ice extent datasets from the US Joint Ice Center (JIC) and satellite passive microwave observations for 1979–88 |
title_sort |
intercomparison of antarctic sea ice extent datasets from the us joint ice center (jic) and satellite passive microwave observations for 1979–88 |
publisher |
Cambridge University Press (CUP) |
publishDate |
1998 |
url |
http://dx.doi.org/10.1017/s0954102098000273 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102098000273 |
geographic |
Antarctic Ross Sea Weddell |
geographic_facet |
Antarctic Ross Sea Weddell |
genre |
Antarc* Antarctic Antarctic Science Ross Sea Sea ice |
genre_facet |
Antarc* Antarctic Antarctic Science Ross Sea Sea ice |
op_source |
Antarctic Science volume 10, issue 2, page 204-214 ISSN 0954-1020 1365-2079 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0954102098000273 |
container_title |
Antarctic Science |
container_volume |
10 |
container_issue |
2 |
container_start_page |
204 |
op_container_end_page |
214 |
_version_ |
1792501697365409792 |