Impact of Antarctic meltwater forcing on East Asain climate under greenhouse warming
Master In recent decades, Antarctic ice sheet/shelf melting has been accelerated, releasing freshwater into the Southern Ocean. It has been suggested that the meltwater flux could lead to cooling in the Southern Hemisphere, which would retard global warming and further induce a northward shift of th...
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포항공과대학교
2021
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ftponangunivst:oai:oasis.postech.ac.kr:2014.oak/111553 2023-05-15T13:55:14+02:00 Impact of Antarctic meltwater forcing on East Asain climate under greenhouse warming 오지훈 일반대학원 환경공학부 2021- 2 http://postech.dcollection.net/common/orgView/200000370950 https://oasis.postech.ac.kr/handle/2014.oak/111553 eng eng 포항공과대학교 OAK-2015-08748 http://postech.dcollection.net/common/orgView/200000370950 https://oasis.postech.ac.kr/handle/2014.oak/111553 Thesis 2021 ftponangunivst 2022-10-20T21:05:48Z Master In recent decades, Antarctic ice sheet/shelf melting has been accelerated, releasing freshwater into the Southern Ocean. It has been suggested that the meltwater flux could lead to cooling in the Southern Hemisphere, which would retard global warming and further induce a northward shift of the Intertropical Convergence Zone (ITCZ). In this study, we use experimental ensemble climate simulations to show that Antarctic meltwater forcing has distinct regional climate impacts over the globe, leading in particular to regional warming in East Asia, which offsets the global cooling effect by the meltwater forcing. It is suggested that Antarctic meltwater forcing leads to a negative precipitation anomaly in the Western North Pacific (WNP) via cooling in the tropics and the northward shift of the ITCZ. This suppressed convection in WNP induces an anticyclonic flow over the North Pacific, which leads to regional warming in East Asia. This hypothesis is supported by analyses of inter-ensemble spread and long‐term control simulations. Thesis Antarc* Antarctic Ice Sheet Southern Ocean Pohang University of Science and Technology (POSTECH): Open Access System for Information Sharing (OASIS) Antarctic Pacific Southern Ocean |
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Open Polar |
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Pohang University of Science and Technology (POSTECH): Open Access System for Information Sharing (OASIS) |
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ftponangunivst |
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English |
description |
Master In recent decades, Antarctic ice sheet/shelf melting has been accelerated, releasing freshwater into the Southern Ocean. It has been suggested that the meltwater flux could lead to cooling in the Southern Hemisphere, which would retard global warming and further induce a northward shift of the Intertropical Convergence Zone (ITCZ). In this study, we use experimental ensemble climate simulations to show that Antarctic meltwater forcing has distinct regional climate impacts over the globe, leading in particular to regional warming in East Asia, which offsets the global cooling effect by the meltwater forcing. It is suggested that Antarctic meltwater forcing leads to a negative precipitation anomaly in the Western North Pacific (WNP) via cooling in the tropics and the northward shift of the ITCZ. This suppressed convection in WNP induces an anticyclonic flow over the North Pacific, which leads to regional warming in East Asia. This hypothesis is supported by analyses of inter-ensemble spread and long‐term control simulations. |
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일반대학원 환경공학부 |
format |
Thesis |
author |
오지훈 |
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오지훈 Impact of Antarctic meltwater forcing on East Asain climate under greenhouse warming |
author_facet |
오지훈 |
author_sort |
오지훈 |
title |
Impact of Antarctic meltwater forcing on East Asain climate under greenhouse warming |
title_short |
Impact of Antarctic meltwater forcing on East Asain climate under greenhouse warming |
title_full |
Impact of Antarctic meltwater forcing on East Asain climate under greenhouse warming |
title_fullStr |
Impact of Antarctic meltwater forcing on East Asain climate under greenhouse warming |
title_full_unstemmed |
Impact of Antarctic meltwater forcing on East Asain climate under greenhouse warming |
title_sort |
impact of antarctic meltwater forcing on east asain climate under greenhouse warming |
publisher |
포항공과대학교 |
publishDate |
2021 |
url |
http://postech.dcollection.net/common/orgView/200000370950 https://oasis.postech.ac.kr/handle/2014.oak/111553 |
geographic |
Antarctic Pacific Southern Ocean |
geographic_facet |
Antarctic Pacific Southern Ocean |
genre |
Antarc* Antarctic Ice Sheet Southern Ocean |
genre_facet |
Antarc* Antarctic Ice Sheet Southern Ocean |
op_relation |
OAK-2015-08748 http://postech.dcollection.net/common/orgView/200000370950 https://oasis.postech.ac.kr/handle/2014.oak/111553 |
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1766261512620474368 |