西太平洋热带海域动量、感热和潜热等湍流通量的观测研究

本文根据中国科学院“实验3号”科学考察船1986年10月至12月在菲律宾以东60多万平方公里辽阔的西太平洋热带海域6个连续测站上(146°E,0°;145°E,0°;150°E,0°;140°E,5°N;145°E,5°N;150°E,5°N),使用我国自行研制的小型系留气艇探测系统观测到的大气温度、湿度、气压和风等廓线资料,利用相似理论的通量-廓线关系,给出这一海域的动量通量(特别是曳力系数C_D)、感热通量和潜热通量。结果表明,这一海域上的曳力系数值C_D=(1.53±0.25)×10~(-3);该海域总是将其贮存的热量以感热形式特别是以潜热形式输送到大气中(其中感热输送仅占10％,其余主要为水汽潜热输送),使该海域成为地球上不可多见的热源。

OBSERVATION RESEARCH OF THE TURBULENT FLUXES OF MOMENTUM, SENSIBLE HEAT AND LATENT HEAT OVER THE WEST PACIFIC TROPICAL OCEAN AREA

In this paper, results of the fluxes of momentum, sensible heat and latent heat for the West Pacific Tropical Ocean Area (from 127°E to 150°E, 5°N to 30°S) are described. The data were collected by the small tethered balloon sounding system over this ocean area including 6 continuos stations from 11th of Octorber 1986 to the 15th of December 1986. These fluxes were calculated by the semiempirical flux-profile relationships of Monin-Obukhov similarity theory using these observed data. The results show that for this tropical ocean area the drag coefficient CD is equal to (1.53±0.25) ×10^-3, and the daily mean latent flux HL is greater than its daily mean sensible flux H,, by factor of about 9.