西太平洋暖池区的海气通量及整体交换系数  

STUDY OF AIR SEA FLUXES AND BULK TRANSFER COEFFICIENTS ON “WARM POOL” OF THE WESTERN PACIFIC

作　　者：徐静琦[1] 魏皓 顾海涛 武建平[2] 

机构地区：[1]青岛海洋大学海洋环境学院 [2]国家海洋局第一海洋研究所

出　　处：《气象学报》1997年第6期703-713,共11页Acta Meteorologica Sinica

摘　　要：根据西太平洋海域弱风、高温、潮湿的大气状态特征，提出了在光滑面存在粘性副层气流中的廓线的层结订正方案。用此模式对西太平洋暖池区ＴＯＧＡＣＯＡＲＥＩＯＰ期间，在向阳红５号船（２°Ｓ，１５４°Ｅ）获取的海面风、温、湿梯度资料进行了处理。计算结果显示西太平洋暖池区贴水层气流中不稳定层结占５０％－８０％，其中很不稳定的占１０．３％；该海区海气通量和整体交换系数受层结影响远大于受风速的影响；海气通量和整体交换系数随不稳定程度增加而增大，在相同风速下量值可相差４倍以上；其变化范围为０．３×１０－３—３．２×１０－３。由此可见，层结的影响使它们的变化大于其它海区的结果。在ｕ１０＝０－１０ｍ／ｓ范围内，中性化整体交换系数平均为ＣＤＮ＝１．２×１０－３，ＣＨＮ＝１．１４×１０－３，ＣＥＮ＝１．１９×１０－３，与Ｌａｒｇｅ和Ｐｏｎｄ（１９８１，１９８２）不稳定条件的研究结果相差无几。A stratification modified model of the profiles is developed for a viscous sublayer of light wind, high temperature and humidity, over a smooth sea surface. The data of the gradient of wind, temperature and humidity near the sea surface of “warm pool” in the Western Pacific, obtained by XiangYangHong #5 R/V during TOGA COARE IOP, are calculated using this model. Computing results show that there are about 50%-80% observations in unstable state, among them 10.3% are strong unstable. The effect of stratificatin on the air sea fluxes and bulk transfer coefficients are much stronger than that of wind. These fluxes and coefficients increase with the increasing unstability by a factor of 5 under the same wind. They vary from 0.3×10 3 to 3.2×10 3 .It can be seen that the variations ae larger than those at other sea area just owing to the effect of stratification. It is discovered that the neutralized bulk transfer coefficients averaged over u 10 <10 m·s -1 , C DN =1.2×10 3 , C HN =1.14×10 3 and C EN =1.19×10 3 , are consistent with the results of Large and Pond (1981,1982) in open sea.

关 键 词：西太平洋 暖池区 海气通量 整体交换系数 

分 类 号：P732.6[天文地球—海洋科学]