| LIU Na,WU Dexing,LIN Xiaopei,MENG Qingjia. 2014. Seasonal variations of air-sea heat fluxes and sea surface temperature in the northwestern Pacific marginal seas. Acta Oceanologica Sinica, 33(3):101－110 |
| Seasonal variations of air-sea heat fluxes and sea surface temperature in the northwestern Pacific marginal seas |
| 吕宋海峡西部深海盆内孤立波潜标观测研究 |
| Received:March 02, 2012 Revised:May 22, 2013 |
| DOI：10.1007/s13131-014-0433-6 |
| Key words:heat flux seasonal variations Kuroshio heat content |
| 中文关键词: 内孤立波 南海 观测 非线性内波 |
| 基金项目:The National Natural Science Foundation of China under contract Nos 41221063 and 41222037;the China's National Basic Research Priorities Programmer under contract No. 2013CB956202;the Project of Global Change and Air-Sea interaction under contract No. GASI-03- 01-01-02;the National Special Research Fund for Non-Profit Marine Sector under contract No. 201205018;the State Oceanic Administration Marine Science Foundation for Youth under contract No. 2012204;the Open Research Program of the Key Laboratory of Ocean Circulation and Wave, Institute of Oceanology, Chinese Academy of Sciences, under contract Nos KLOCAW1201 and KLOCAW1102. |
| Author Name | Affiliation | E-mail | | LIU Na | Key Laboratory of Research on Marine Hazards Forecasting, National Marine Environmental Forecasting Center, State Oceanic Administration, Beijing 100081, China
LASG, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China | liuna@nmefc.gov.cn | | WU Dexing | Physical Oceanography Laboratory, Ocean University of China, Qingdao 266100, China | | | LIN Xiaopei | Physical Oceanography Laboratory, Ocean University of China, Qingdao 266100, China | | | MENG Qingjia | State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
LASG, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China | |
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| Abstract: |
| Using a net surface heat flux (Qnet) product obtained from the objectively analyzed air-sea fluxes (OAFlux) project and the international satellite cloud climatology project (ISCCP), and temperature from the simple ocean data assimilation (SODA), the seasonal variations of the air-sea heat fluxes in the northwestern Pacific marginal seas (NPMS) and their roles in sea surface temperature (SST) seasonality are studied. The seasonal variations of Qnet, which is generally determined by the seasonal cycle of latent heat flux (LH), are in response to the advection-induced changes of SST over the Kuroshio and its extension. Two dynamic regimes are identified in the NPMS: one is the area along the Kuroshio and its extension, and the other is the area outside the Kuroshio. The oceanic thermal advection dominates the variations of SST and hence the sea-air humidity plays a primary role and explains the maximum heat losing along the Kuroshio. The heat transported by the Kuroshio leads to a longer period of heat losing over the Kuroshio and its Extension. Positive anomaly of heat content corresponds with the maximum heat loss along the Kuroshio. The oceanic advection controls the variations of heat content and hence the surface heat flux. This study will help us understand the mechanism controlling variations of the coupled ocean-atmosphere system in the NPMS. In the Kuroshio region, the ocean current controls the ocean temperature along the main stream of the Kuroshio, and at the same time, forces the air-sea fluxes. |
| 中文摘要: |
| 2010年3月至8月，在吕宋海峡西部深水区布放的一套潜标捕共捉到了137个内孤立波，其中典型内孤立波的振幅能够达到140米，其诱发的西向流速超过1.6米/秒。在观测期间，7月份的内孤立波最强，其可能跟夏季较强的海水层结有关。大部分内孤立波在农历初一、十五附近或之后发生，表明其是由天文潮激发的。大约一半的内孤立波在当地时间19点左右出现，这是由于A型内孤立波每天到达潜标的时间基本相同。内孤立波的传播方向和吕宋海峡天文潮表明，巴坦岛南部海域是观测到的A型内孤立波的生成源地；伊特巴亚岛南部和巴坦岛南部海域是观测到的B型内孤立波的生成源地。由于半日内潮在吕宋海峡东、西海山间的共振作用，伊特巴亚岛南部和巴坦岛南部海域是观测到的强内孤立波的主要生成源地。 |
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