摘要
用ＴＯＧＡＣＯＡＲＥ加强期在赤道带西太平洋暖池中的观测船ＭｏａｎａＷａｖｅ和浮标获得的小时风、温、湿、海温资料计算了海面各种通量。分析潜热通量随海面温度ＳＳＴ的变化特征，发现小风期潜热通量ＬＨ在某ＳＳＴ处出现最大值，大风时不出现此现象，即ＬＨ随ＳＳＴ变化的主要原因是风随ＳＳＴ的变化，其次是气海湿度差Δｑ及传输系数ＣＥ随ＳＳＴ的变化。用相关分析法分析小风期、西风爆发期、对流扰动期等不同时期中各通量与各气象要素的关系发现，潜热通量和动量通量主要决定于风，对感热通量起作用的主要是气海温差，降水也可通过气海温差和风影响感热通量。
By using the hourly wind, air temperature, humidity, and sea surface temperature data measured at the vessel Moana Wave and buoy in the warm pool of western Pacific during the IOP of TOGA COARE, the fluxes over sea surface were computed. By analyzing the characteristics of the variation of the latent heat flux with sea surface temperature, it is found that during weak wind period, a maximum value of latent heat flux appears at some certain SST, but this phenomenon does not occur during strong wind period. So the variation is mainly caused by the variation of wind, and then by the humidity difference between air and sea, and the transfer coefficient with SST. The relationship between the fluxes and the meteorological elements during weak wind period, westerly burst period and convection disturbed period are also analyzed by using correlation method. The main conclusions are: Latent heat flux and momentum flux are mainly determined by wind, sensible heat flux by the potential temperature difference between air and sea. Precipitation affects the sensible heat flux through the potential temperature difference and wind.
出处
《热带气象学报》
CSCD
北大核心
1999年第3期280-288,共9页
Journal of Tropical Meteorology
基金
国家自然科学基金
