摘要
用2006年夏-2007年秋在北部湾获得的船测气象资料,由块体公式计算了海-气通量。结果表明：北部湾春、夏季节获得热通量,而秋、冬季节失去热通量。春季通过湍流交换造成的热通量对海面热平衡的贡献最小,其次是夏季、冬季和秋季。在年平均尺度上感热通量和潜热通量分别占净辐射通量的7.4%和77.4%,15.2%的净辐射热量通过海洋过程消耗掉。感热通量随海-气温差的加大而增大,而与风速之间呈现复杂的非线性关系。海-气温差增加1℃,感热通量增加6.7-12.7 W/m^2;较大的感热通量（〉30 W/m^2）容易出现在5-10 m/s风速条件下。潜热通量与风速和相对湿度呈明显的相关关系：风速增加1 m/s,潜热通量增加约18 W/m^2,而相对湿度下降1%会导致6 W/m^2潜热通量的增加。
Air-sea flux in Beibu Gulf was calculated by bulk formulae with vessel-measured meteorological data from Summer 2006 to Autumn 2007. The calculation showed that Beibu Gulf gained net heat flux in spring and summer, lost net heat flux in autumn and winter. The contribution of heat flux caused by turbulence exchange to the heat balance of sea surface was minimum in Spring, and maximum in Autumn. On the annual average scale, sensible heat flux was 7.4 % of the net radiation flux, and latent heat flux was 77.4 %. 15.6 % net radiation flux was dissipated in the sea. Sensible heat flux would increase with the air-sea temperature difference, but exhibited nonlinear relationship with wind speed. Sensible heat flux could increase 6.7-12.7 W/m^2, if the air-sea temperature difference increase one degree. Larger sensible heat flux（ 〉30 W/m^2） was often found in 5-10 m/s wind speed conditions. There was a good correlation between latent heat flux and wind speed and relative humidity, latent heat flux might increase 18 W/m^2 if 1 m/s wind speed was increased, and 1% decrease of relative humidity might cause 6 W/m^2 increase of the latent heat flux.
出处
《中国海洋大学学报（自然科学版）》
CAS
CSCD
北大核心
2009年第4期569-578,共10页
Periodical of Ocean University of China
基金
国家908专项(908-01-ST09,908-2C-1-01)资助
