南海夏季风期间海-气通量整体输送系数分析

ANALYSIS OF AIR-SEA FLUXES BULK TRANSFER COEFFICIENTSDURING SOUTH CHINA SEA SUMMER MONSOON

中文关键词:  南海季风  海-气通量  整体输送系数

英文关键词:South China Sea monsoon  Air-sea fluxes  Bulk transfer coefficients

中文摘要:

      利用2000年南海海气通量观测资料,建立了南海季风期间海气通量整体输送系数的计算公式;同时,利用2000和2002年观测资料与邻近海区同类公式进行了对比试验研究。结果表明,使用邻近海区的同类公式计算的海气通量的误差高于新建立公式所得结果。因此,开展南海海气通量观测试验对建立适合于南海的整体输送系数的计算公式是必要的。

英文摘要:

      2000 and 2002 "South China Sea Air-Sea Flux Measurement" project are the extension of Xisha tower air-sea flux measurement which include in the South China Sea Monsoon Experiment (SCSMEX) program developed over the South China Sea (SCS) in 1998. In this paper, firstly, the bulk transfer coefficients variation feature with wind speed in unstable stratification was calculated and analyzed by means of these two air-sea flux gradient measurement data before and after SCS monsoon onset. Research showed, in general, that the bulk transfer coefficients corresponded well with wind speed especially in high speed stage, but there was a little dispersion in low speed stage. The further study found that the main reason causing dispersion had relation to stratification stability and air-sea temperature difference could be used to replace the stratification stability. Based on above results, the bulk transfer coefficients calculation formula being adapted to the unstability stratification atmosphere over SCS was constructed and tested. Secondly, some representative similar calculation formula of the bulk transfer coefficients, including Yan's results developed from 1998 SCSMEX data at same place and Kara's and Xu's results developed by means of west Pacific Ocean data, was chosen to compare with the formula in this paper on the basis of the model results calculated by these two observation.