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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ftdoajarticles:oai:doaj.org/article:9598286ba69749959a185b7feedc91bb 2023-05-15T14:03:41+02:00 Interannual variability of winter precipitation over the Lambert Glacier basin linked to the dipole pattern of sea surface temperature in the southern Indian Ocean Jiao Yang Ting Liu Tingfeng Dou Cunde Xiao 2022-09-01T00:00:00Z https://doi.org/10.3389/feart.2022.920245 https://doaj.org/article/9598286ba69749959a185b7feedc91bb EN eng Frontiers Media S.A. https://www.frontiersin.org/articles/10.3389/feart.2022.920245/full https://doaj.org/toc/2296-6463 2296-6463 doi:10.3389/feart.2022.920245 https://doaj.org/article/9598286ba69749959a185b7feedc91bb Frontiers in Earth Science, Vol 10 (2022) southern Indian Ocean East Antarctica sea surface temperature precipitation dipole pattern Science Q article 2022 ftdoajarticles https://doi.org/10.3389/feart.2022.920245 2022-12-30T22:05:55Z 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 Directory of Open Access Journals: DOAJ Articles Antarctic The Antarctic East Antarctica Indian Lambert Glacier ENVELOPE(67.490,67.490,-73.065,-73.065) Frontiers in Earth Science 10 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
southern Indian Ocean East Antarctica sea surface temperature precipitation dipole pattern Science Q |
spellingShingle |
southern Indian Ocean East Antarctica sea surface temperature precipitation dipole pattern Science Q Jiao Yang Ting Liu Tingfeng Dou Cunde Xiao 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 |
southern Indian Ocean East Antarctica sea surface temperature precipitation dipole pattern Science Q |
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 |
Jiao Yang Ting Liu Tingfeng Dou Cunde Xiao |
author_facet |
Jiao Yang Ting Liu Tingfeng Dou Cunde Xiao |
author_sort |
Jiao Yang |
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 S.A. |
publishDate |
2022 |
url |
https://doi.org/10.3389/feart.2022.920245 https://doaj.org/article/9598286ba69749959a185b7feedc91bb |
long_lat |
ENVELOPE(67.490,67.490,-73.065,-73.065) |
geographic |
Antarctic The Antarctic East Antarctica Indian Lambert Glacier |
geographic_facet |
Antarctic The Antarctic East Antarctica Indian Lambert Glacier |
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, Vol 10 (2022) |
op_relation |
https://www.frontiersin.org/articles/10.3389/feart.2022.920245/full https://doaj.org/toc/2296-6463 2296-6463 doi:10.3389/feart.2022.920245 https://doaj.org/article/9598286ba69749959a185b7feedc91bb |
op_doi |
https://doi.org/10.3389/feart.2022.920245 |
container_title |
Frontiers in Earth Science |
container_volume |
10 |
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1766274501696290816 |