Decadal SST Variability in the Southeast Indian Ocean and Its Impact on Regional Climate
文献类型：期刊论文
| 作者 | Li, Yuanlong2,3,4,5; Han, Weiqing1; Zhang, Lei1; Wang, Fan2,3,5
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| 刊名 | JOURNAL OF CLIMATE
 |
| 出版日期 | 2019-10-01 |
| 卷号 | 32期号:19页码:6299-6318 |
| ISSN号 | 0894-8755 |
| 关键词 | Ocean dynamics Sea surface temperature Decadal variability |
| DOI | 10.1175/JCLI-D-19-0180.1 |
| 通讯作者 | Li, Yuanlong(liyuanlong@qdio.ac.cn) |
| 英文摘要 | The southeast Indian Ocean (SEIO) exhibits decadal variability in sea surface temperature (SST) with amplitudes of similar to 0.2-0.3 K and covaries with the central Pacific (r = -0.63 with Nino-4 index for 1975-2010). In this study, the generation mechanisms of decadal SST variability are explored using an ocean general circulation model (OGCM), and its impact on atmosphere is evaluated using an atmospheric general circulation model (AGCM). OGCM experiments reveal that Pacific forcing through the Indonesian Throughflow explains <20% of the total SST variability, and the contribution of local wind stress is also small. These wind-forced anomalies mainly occur near the Western Australian coast. The majority of SST variability is attributed to surface heat fluxes. The reduced upward turbulent heat flux (Q(T); latent plus sensible heat flux), owing to decreased wind speed and anomalous warm, moist air advection, is essential for the growth of warm SST anomalies (SSTAs). The warming causes reduction of low cloud cover that increases surface shortwave radiation (SWR) and further promotes the warming. However, the resultant high SST, along with the increased wind speed in the offshore area, enhances the upward Q(T) and begins to cool the ocean. Warm SSTAs co-occur with cyclonic low-level wind anomalies in the SEIO and enhanced rainfall over Indonesia and northwest Australia. AGCM experiments suggest that although the tropical Pacific SST has strong effects on the SEIO region through atmospheric teleconnection, the cyclonic winds and increased rainfall are mainly caused by the SEIO warming through local air-sea interactions. |
| 资助项目 | National Natural Science Foundation of China (NSFC)[41806001] ; National Natural Science Foundation of China (NSFC)[41776001] ; National Program on Global Change and Air-Sea Interaction[GASIIPOVAI-01-01] ; NSF-AGS[1446480] ; NSF-OCE[1658132] |
| WOS研究方向 | Meteorology & Atmospheric Sciences |
| 语种 | 英语 |
| 出版者 | AMER METEOROLOGICAL SOC |
| WOS记录号 | WOS:000482950800007 |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/162774]  |
| 专题 | 海洋研究所_海洋环流与波动重点实验室 |
| 通讯作者 | Li, Yuanlong |
| 作者单位 | 1.Univ Colorado, Dept Atmospher & Ocean Sci, Boulder, CO 80309 USA 2.Qingdao Natl Lab Marine Sci & Technol, Funct Lab Ocean Dynam & Climate, Qingdao, Shandong, Peoples R China 3.Chinese Acad Sci, Ctr Ocean Mega Sci, Qingdao, Shandong, Peoples R China 4.CAS Ctr Excellence Quaternary Sci & Global Change, Xian, Shaanxi, Peoples R China 5.Chinese Acad Sci, Inst Oceanol, CAS Key Lab Ocean Circulat & Waves, Qingdao, Shandong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Yuanlong,Han, Weiqing,Zhang, Lei,et al. Decadal SST Variability in the Southeast Indian Ocean and Its Impact on Regional Climate[J]. JOURNAL OF CLIMATE,2019,32(19):6299-6318. |
| APA | Li, Yuanlong,Han, Weiqing,Zhang, Lei,&Wang, Fan.(2019).Decadal SST Variability in the Southeast Indian Ocean and Its Impact on Regional Climate.JOURNAL OF CLIMATE,32(19),6299-6318. |
| MLA | Li, Yuanlong,et al."Decadal SST Variability in the Southeast Indian Ocean and Its Impact on Regional Climate".JOURNAL OF CLIMATE 32.19(2019):6299-6318. |
入库方式： OAI收割
来源：海洋研究所
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