| 太平洋内部副热带-热带经向翻转环流的季节变化特征 |
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| 引用本文： | 韩雪,冯俊乔.太平洋内部副热带-热带经向翻转环流的季节变化特征[J].海洋与湖沼,2022,53(1):8-18. |
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| 作者姓名： | 韩雪 冯俊乔 |
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| 作者单位： | 中国科学院海洋环流与波动重点实验室 山东青岛 266071;中国科学院海洋研究所 山东青岛 266071;中国科学院大学 北京 100049;中国科学院海洋大科学研究中心 山东青岛266071;中国科学院海洋环流与波动重点实验室 山东青岛 266071;中国科学院海洋研究所 山东青岛 266071;中国科学院海洋大科学研究中心 山东青岛266071;青岛海洋科学与技术试点国家实验室海洋动力过程与气候功能实验室 山东青岛 266237 |
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| 基金项目： | 国家自然科学基金,41976027号； |
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| 摘 要： | 太平洋内部副热带-热带经向翻转环流(subtropical-tropical cell,STC)是连接热带和副热带的海洋通道.由于以往海洋观测资料的匮乏,前人多利用海洋模式数据进行研究,且仅限于沿单一纬度上的STC的分析,较少涉及沿不同纬度的STC的季节变异规律.利用地转海洋学实时观测阵(array for real-...
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| 关 键 词： | STC 季节变化 经向输运 |
| 收稿时间： | 2021/8/23 0:00:00 |
| 修稿时间： | 2021/10/18 0:00:00 |
SEASONAL VARIABILITY OF SUBTROPICAL-TROPICAL MERIDIONAL OVERTURNING CIRCULATION IN THE PACIFIC |
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| HAN Xue,FENG Jun-Qiao.SEASONAL VARIABILITY OF SUBTROPICAL-TROPICAL MERIDIONAL OVERTURNING CIRCULATION IN THE PACIFIC[J].Oceanologia Et Limnologia Sinica,2022,53(1):8-18. |
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| Authors: | HAN Xue FENG Jun-Qiao |
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| Institution: | (Key Laboratory of Ocean Circulation and Waves,Chinese Academy of Sciences,Qingdao 266071,China;Institute of Oceanology,Chinese Academy of Sciences,Qingdao 266071,China;University of Chinese Academy of Sciences,Beijing 100049,China;Center for Ocean Mega-Science,Chinese Academy of Sciences,Qingdao 266071,China;Laboratory for Ocean Dynamics and Climate,Pilot National Laboratory for Marine Science and Technology(Qingdao),Qingdao 266237,China) |
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| Abstract: | The subtropical-tropical cell(STC)in the Pacific Ocean is an ocean channel connecting the tropical and subtropical oceans.Due to the lack of ocean observation data,mostly available studies use ocean model data only,which limited the analysis of STC along a single latitude,and were less involved in the seasonal variation of STC along different latitudes.Based on Argo(Array for Real-time Geostrophic Oceanography)temperature and salinity data,GODAS(Global Ocean Data Assimilation System),SODA3.4.2(Simple Ocean Data Assimilation 3.4.2),ORAS5(Ocean ReAnalysis System 5),and NCEP(National Centers for Environmental Prediction)reanalysis data,the seasonal variations of STC along different latitudes in the Pacific as well as its mechanism are investigated in this study.Results show that along 10°~2°S and 2°~6°N,STC is stronger in spring and weaker in summer and autumn;at 7°~15°N,STC is stronger in summer and weaker in winter;at 15°~11°S,STC is stronger in winter and weaker in summer.The seasonal variation of STC is mainly driven by surface wind field and westward Rossby wave,and their relative contributions are different at different latitudes:at 10°S~6°N,the seasonal variation of STC is basically consistent with the seasonal variation of wind field,indicating that the seasonal variation of STC is mainly attributed to the sea surface wind forcing;At 15°~11°S and 7°~10°N,the STC variation lags behind the wind field for 3~4 months,and at 11°~15°N,the STC variation lags behind the wind field for 9 months.Therefore,the westward propagating of the Rossby wave plays an important role in the seasonal variation of STC than that of the local wind field.This study offered insightful view for in-depth understanding of the variation of STC and its impact on tropical ocean climate change.The diagnosis and comparative analysis of multi-source ocean reanalysis data also provides an important reference for the study of ocean circulation. |
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| Keywords: | subtropical-tropical cell(STC) seasonal variation meridional transport |
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