基于908专项秋季航次中获得的海洋气象和大气边界层资料,利用涡动相关法计算感热通量和潜热通量,分析了黄海北部海域10月中下旬辐射、感热通量和潜热通量的变化特征。结果表明:北黄海海表面风、温度、相对湿度等气象要素存在明显的日变化;一天中太阳总辐射、海面长波辐射、大气逆辐射呈单峰变化,海面反射辐射在晴天微风无云条件下有明显的双峰变化;秋季晴朗天气下太阳总辐射中午峰值近600 W/m2,海面长波辐射、大气逆辐射大约维持在405 W/m2,325 W/m2。白天辐射能量中的大部分由海水吸收存储,夜间海水则通过长波辐射和热通量释放能量,一天中总的效应是海表面向大气释放能量。
By using the meteorological and marine atmospheric boundary layer data obtained from project 908 of State Oceanic Administration during October 13～26,2007,sensitive heat flux and latent heat flux are calculated by eddy covariance technique.Characteristics of the solar radiation and heat flux in the North Yellow Sea are analyzed.The results show that there are obvious daily variation in wind speed,temperature and relative humidity;daily downward solar radiation,upward and downward long-wave radiation show single peak while upward solar radiation at the sea surface in conditions with breeze and few clouds show double peak;On clear day during the autumn cruise,downward solar radiation reaches a maximum(600 W/m2) at noon,upward and downward long-wave radiation vary around 405 W/m2,325 W/m2.Most of the radiation energy is absorbed by sea water during the daytime and released at night through long-wave radiation and heat flux,and the total budget of energy in a day is from sea surface to atmosphere.
Periodical of Ocean University of China
the North Yellow Sea
sensitive heat flux
latent heat flux