Interannual variability of latent and sensible heat fluxes in the South China Sea
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- 作者：Haibo Zong (1) (2)
Yuguang Liu (1)
Peng Xiu (3)
Qing Xu (4)
Zengrui Rong (1) - 关键词：latent heat flux ; sensible heat flux ; South China Sea
- 刊名：Chinese Journal of Oceanology and Limnology
- 出版年：2010
- 出版时间：January 2010
- 年：2010
- 卷：28
- 期：1
- 页码：153-159
- 全文大小：758KB
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Yuguang Liu (1)
Peng Xiu (3)
Qing Xu (4)
Zengrui Rong (1)
1. Physical Oceanography Laboratory, Ocean University of China, Qingdao, 266100, China
2. State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai, 200062, China
3. School of Marine Science, University of Maine, Maine, 04469, USA
4. College of Traffic and Ocean, Hohai University, Nanjing, 210098, China - ISSN：1993-5005
文摘
The South China Sea (SCS) is significantly influenced by El Nio and the Southern Oscillation (ENSO) through ENSO-driven atmospheric and oceanic changes. We analyzed measurements made from 1960 to 2004 to investigate the interannual variability of the latent and sensible heat fluxes over the SCS. Both the interannual variations of latent and sensible heat fluxes are closely related to ENSO events. The low-pass mean heat flux anomalies vary in a coherent manner with the low-pass mean Southern Oscillation Index (SOI). Time lags between the heat flux anomalies and the SST anomalies were also studied. We found that latent heat flux anomalies have a minimum value around January of the year following El Nio events. During and after the mature phase of El Nio, a change of atmospheric circulation alters the local SCS near-surface humidity and the monsoon winds. During the mature phase of El Nio, the wind speed decreases over the entire sea, and the air-sea specific humidity difference anomalies decreases in the northern SCS and increases in the southern SCS. Thus, a combined effect of wind speed anomalies and air-sea specific humidity difference anomalies results in the latent heat flux anomalies attaining minimum levels around January of the year following an El Nio year.