Interannual variability of winter precipitation over the Lambert Glacier basin linked to the dipole pattern of sea surface temperature in the southern Indian Ocean
Variations in annual accumulated snowfall over the Antarctic ice sheet have a significant and direct impact on mean sea-level change. The interannual variability of the precipitation over coastal Antarctica adjacent to the southern Indian Ocean (SIO) cannot be totally explained by the dominant mode...
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Online Access: | http://dx.doi.org/10.3389/feart.2022.920245 https://www.frontiersin.org/articles/10.3389/feart.2022.920245/full |
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crfrontiers:10.3389/feart.2022.920245 2024-02-11T09:57:48+01:00 Interannual variability of winter precipitation over the Lambert Glacier basin linked to the dipole pattern of sea surface temperature in the southern Indian Ocean Yang, Jiao Liu, Ting Dou, Tingfeng Xiao, Cunde 2022 http://dx.doi.org/10.3389/feart.2022.920245 https://www.frontiersin.org/articles/10.3389/feart.2022.920245/full unknown Frontiers Media SA https://creativecommons.org/licenses/by/4.0/ Frontiers in Earth Science volume 10 ISSN 2296-6463 General Earth and Planetary Sciences journal-article 2022 crfrontiers https://doi.org/10.3389/feart.2022.920245 2024-01-26T10:08:21Z Variations in annual accumulated snowfall over the Antarctic ice sheet have a significant and direct impact on mean sea-level change. The interannual variability of the precipitation over coastal Antarctica adjacent to the southern Indian Ocean (SIO) cannot be totally explained by the dominant mode of atmospheric variability in the Southern Hemisphere. This study explores the possible contributions from sea surface temperature (SST) anomalies in SIO on the precipitation over East Antarctica. The results suggest that the winter precipitation in the Lambert Glacier basin (LGB) is closely related to the autumn SST variability in SIO without the influence of El Niño–Southern Oscillation. It is shown that the positive autumn SIO dipole (SIOD) of SST anomalies is usually followed by reduced precipitation in the following winter over the LGB region and vice versa. The positive (negative) autumn SIOD can persist into the winter and excite cyclonic (anticyclonic) circulation and deepen (weaken) SIO low in high latitude, corresponding to an enhanced northward (southward) wind anomaly in LGB and central SIO. This mechanism prevents (promotes) the transportation of warm and moist marine air to the LGB region and hence decreases (increases) the precipitation during the following winter. Article in Journal/Newspaper Antarc* Antarctic Antarctica East Antarctica Ice Sheet Lambert Glacier Frontiers (Publisher) Antarctic East Antarctica Indian Lambert Glacier ENVELOPE(67.490,67.490,-73.065,-73.065) The Antarctic Frontiers in Earth Science 10 |
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General Earth and Planetary Sciences |
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General Earth and Planetary Sciences Yang, Jiao Liu, Ting Dou, Tingfeng Xiao, Cunde Interannual variability of winter precipitation over the Lambert Glacier basin linked to the dipole pattern of sea surface temperature in the southern Indian Ocean |
topic_facet |
General Earth and Planetary Sciences |
description |
Variations in annual accumulated snowfall over the Antarctic ice sheet have a significant and direct impact on mean sea-level change. The interannual variability of the precipitation over coastal Antarctica adjacent to the southern Indian Ocean (SIO) cannot be totally explained by the dominant mode of atmospheric variability in the Southern Hemisphere. This study explores the possible contributions from sea surface temperature (SST) anomalies in SIO on the precipitation over East Antarctica. The results suggest that the winter precipitation in the Lambert Glacier basin (LGB) is closely related to the autumn SST variability in SIO without the influence of El Niño–Southern Oscillation. It is shown that the positive autumn SIO dipole (SIOD) of SST anomalies is usually followed by reduced precipitation in the following winter over the LGB region and vice versa. The positive (negative) autumn SIOD can persist into the winter and excite cyclonic (anticyclonic) circulation and deepen (weaken) SIO low in high latitude, corresponding to an enhanced northward (southward) wind anomaly in LGB and central SIO. This mechanism prevents (promotes) the transportation of warm and moist marine air to the LGB region and hence decreases (increases) the precipitation during the following winter. |
format |
Article in Journal/Newspaper |
author |
Yang, Jiao Liu, Ting Dou, Tingfeng Xiao, Cunde |
author_facet |
Yang, Jiao Liu, Ting Dou, Tingfeng Xiao, Cunde |
author_sort |
Yang, Jiao |
title |
Interannual variability of winter precipitation over the Lambert Glacier basin linked to the dipole pattern of sea surface temperature in the southern Indian Ocean |
title_short |
Interannual variability of winter precipitation over the Lambert Glacier basin linked to the dipole pattern of sea surface temperature in the southern Indian Ocean |
title_full |
Interannual variability of winter precipitation over the Lambert Glacier basin linked to the dipole pattern of sea surface temperature in the southern Indian Ocean |
title_fullStr |
Interannual variability of winter precipitation over the Lambert Glacier basin linked to the dipole pattern of sea surface temperature in the southern Indian Ocean |
title_full_unstemmed |
Interannual variability of winter precipitation over the Lambert Glacier basin linked to the dipole pattern of sea surface temperature in the southern Indian Ocean |
title_sort |
interannual variability of winter precipitation over the lambert glacier basin linked to the dipole pattern of sea surface temperature in the southern indian ocean |
publisher |
Frontiers Media SA |
publishDate |
2022 |
url |
http://dx.doi.org/10.3389/feart.2022.920245 https://www.frontiersin.org/articles/10.3389/feart.2022.920245/full |
long_lat |
ENVELOPE(67.490,67.490,-73.065,-73.065) |
geographic |
Antarctic East Antarctica Indian Lambert Glacier The Antarctic |
geographic_facet |
Antarctic East Antarctica Indian Lambert Glacier The Antarctic |
genre |
Antarc* Antarctic Antarctica East Antarctica Ice Sheet Lambert Glacier |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica Ice Sheet Lambert Glacier |
op_source |
Frontiers in Earth Science volume 10 ISSN 2296-6463 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3389/feart.2022.920245 |
container_title |
Frontiers in Earth Science |
container_volume |
10 |
_version_ |
1790593343713968128 |