Assessment of the Atlantic water layer in the Arctic Ocean in CMIP5 climate models
Atlantic water (AW) plays an important role in the thermal balance of the Arctic Ocean, but thus far there has been no comprehensive assessment of the AW layer in the Arctic Ocean simulated by coupled climate models in the framework of Coupled Model Intercomparison Project (CMIP). In this study we a...
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ftchinacasciocas:oai:ir.qdio.ac.cn:337002/165063 2023-05-15T14:38:48+02:00 Assessment of the Atlantic water layer in the Arctic Ocean in CMIP5 climate models Shu, Qi Wang, Qiang Su, Jie Li, Xiang Qiao, Fangli 2019-11-01 http://ir.qdio.ac.cn/handle/337002/165063 https://doi.org/10.1007/s00382-019-04870-6 英语 eng SPRINGER CLIMATE DYNAMICS http://ir.qdio.ac.cn/handle/337002/165063 doi:10.1007/s00382-019-04870-6 Meteorology & Atmospheric Sciences SEA-ICE FRAM STRAIT CIRCULATION TRANSFORMATIONS RECIRCULATION HYDROGRAPHY SIMULATION TRANSPORTS BARENTS NANSEN 期刊论文 2019 ftchinacasciocas https://doi.org/10.1007/s00382-019-04870-6 2022-06-27T05:42:01Z Atlantic water (AW) plays an important role in the thermal balance of the Arctic Ocean, but thus far there has been no comprehensive assessment of the AW layer in the Arctic Ocean simulated by coupled climate models in the framework of Coupled Model Intercomparison Project (CMIP). In this study we assessed the climatology and the trend of the Arctic AW layer in the historical simulations of 41 CMIP5 climate models. The results show that the CMIP5 intermodel spread is large in terms of simulated hydrography, AW core temperature (AWCT) and AW core depth (AWCD) in the Arctic Ocean. The CMIP5 multimodel means are found to be able to reproduce the main climatological spatial patterns of both the AWCT, which is warm near the Fram Strait and decreases along the AW pathways, and the AWCD, which deepens along the AW pathways. However, similar to standalone ocean-ice models, the CMIP5 climate models also face the common problems of too deep and too thick AW layer. AWCT bias in the Arctic Ocean is related to simulated water properties near the Fram Strait and in the Kara and Barents seas. Models with large AWCT biases are those with large biases in AW temperature in the Fram Strait. The biases of AWCT are also significantly correlated with the ocean temperature in the Kara Sea, which is modulated by winter cooling, hence the mixed layer depth and sea ice cover in the Barents Sea. The CMIP5 models largely underestimate the interannual variability of the AWCT, and the CMIP5-simulated increasing trend of the AWCT in the Arctic Ocean is considerably lower than the observed one since the late 1970s. Report Arctic Arctic Ocean Barents Sea Fram Strait Kara Sea Nansen Sea ice Institute of Oceanology, Chinese Academy of Sciences: IOCAS-IR Arctic Arctic Ocean Barents Sea Kara Sea Climate Dynamics 53 9-10 5279 5291 |
institution |
Open Polar |
collection |
Institute of Oceanology, Chinese Academy of Sciences: IOCAS-IR |
op_collection_id |
ftchinacasciocas |
language |
English |
topic |
Meteorology & Atmospheric Sciences SEA-ICE FRAM STRAIT CIRCULATION TRANSFORMATIONS RECIRCULATION HYDROGRAPHY SIMULATION TRANSPORTS BARENTS NANSEN |
spellingShingle |
Meteorology & Atmospheric Sciences SEA-ICE FRAM STRAIT CIRCULATION TRANSFORMATIONS RECIRCULATION HYDROGRAPHY SIMULATION TRANSPORTS BARENTS NANSEN Shu, Qi Wang, Qiang Su, Jie Li, Xiang Qiao, Fangli Assessment of the Atlantic water layer in the Arctic Ocean in CMIP5 climate models |
topic_facet |
Meteorology & Atmospheric Sciences SEA-ICE FRAM STRAIT CIRCULATION TRANSFORMATIONS RECIRCULATION HYDROGRAPHY SIMULATION TRANSPORTS BARENTS NANSEN |
description |
Atlantic water (AW) plays an important role in the thermal balance of the Arctic Ocean, but thus far there has been no comprehensive assessment of the AW layer in the Arctic Ocean simulated by coupled climate models in the framework of Coupled Model Intercomparison Project (CMIP). In this study we assessed the climatology and the trend of the Arctic AW layer in the historical simulations of 41 CMIP5 climate models. The results show that the CMIP5 intermodel spread is large in terms of simulated hydrography, AW core temperature (AWCT) and AW core depth (AWCD) in the Arctic Ocean. The CMIP5 multimodel means are found to be able to reproduce the main climatological spatial patterns of both the AWCT, which is warm near the Fram Strait and decreases along the AW pathways, and the AWCD, which deepens along the AW pathways. However, similar to standalone ocean-ice models, the CMIP5 climate models also face the common problems of too deep and too thick AW layer. AWCT bias in the Arctic Ocean is related to simulated water properties near the Fram Strait and in the Kara and Barents seas. Models with large AWCT biases are those with large biases in AW temperature in the Fram Strait. The biases of AWCT are also significantly correlated with the ocean temperature in the Kara Sea, which is modulated by winter cooling, hence the mixed layer depth and sea ice cover in the Barents Sea. The CMIP5 models largely underestimate the interannual variability of the AWCT, and the CMIP5-simulated increasing trend of the AWCT in the Arctic Ocean is considerably lower than the observed one since the late 1970s. |
format |
Report |
author |
Shu, Qi Wang, Qiang Su, Jie Li, Xiang Qiao, Fangli |
author_facet |
Shu, Qi Wang, Qiang Su, Jie Li, Xiang Qiao, Fangli |
author_sort |
Shu, Qi |
title |
Assessment of the Atlantic water layer in the Arctic Ocean in CMIP5 climate models |
title_short |
Assessment of the Atlantic water layer in the Arctic Ocean in CMIP5 climate models |
title_full |
Assessment of the Atlantic water layer in the Arctic Ocean in CMIP5 climate models |
title_fullStr |
Assessment of the Atlantic water layer in the Arctic Ocean in CMIP5 climate models |
title_full_unstemmed |
Assessment of the Atlantic water layer in the Arctic Ocean in CMIP5 climate models |
title_sort |
assessment of the atlantic water layer in the arctic ocean in cmip5 climate models |
publisher |
SPRINGER |
publishDate |
2019 |
url |
http://ir.qdio.ac.cn/handle/337002/165063 https://doi.org/10.1007/s00382-019-04870-6 |
geographic |
Arctic Arctic Ocean Barents Sea Kara Sea |
geographic_facet |
Arctic Arctic Ocean Barents Sea Kara Sea |
genre |
Arctic Arctic Ocean Barents Sea Fram Strait Kara Sea Nansen Sea ice |
genre_facet |
Arctic Arctic Ocean Barents Sea Fram Strait Kara Sea Nansen Sea ice |
op_relation |
CLIMATE DYNAMICS http://ir.qdio.ac.cn/handle/337002/165063 doi:10.1007/s00382-019-04870-6 |
op_doi |
https://doi.org/10.1007/s00382-019-04870-6 |
container_title |
Climate Dynamics |
container_volume |
53 |
container_issue |
9-10 |
container_start_page |
5279 |
op_container_end_page |
5291 |
_version_ |
1766310815892242432 |