利用1999年7月至2003年5月期间的遥感数据,包括AVHRR海表层温度、QuikSCAT风场和风应力数据,在分析4年内月平均遥感温度场和风场特征与历年现场观测所获得的认识一致的基础上,选取2002年002-008天这一连续晴空的时段,尝试建立简单的沿岸冷水影响面积表征方法,初步探讨了冬季台湾海峡浙闽沿岸水分布的短期变动与风应力之间的关系。结果表明,风是决定冬季台湾海峡海表层温度逐日变动的关键因素,日平均SST与风应力的相关系数R2达到0·90。采用温度法(SST≤17℃)和温度空间距平法(≤-1℃)表征的浙闽沿岸水影响面积的变化趋势基本一致,而且影响面积的逐日变动与风应力显著相关,二者的相关系数R2分别达到0·90和0·91。

This paperhas a prmi ary look at the daily variation ofcoastalwaterdistribution in relation towintertmi ewind\nforcing in the Taiwan Strait. QuikSCATwind data and AVHRR Sea Surface Temperature(SST) data during the period\nfrom July, 1999 toMay, 2003were used in this study. Monthlymeanwind field andSSTduring thisperiodwere analyzed\nfirst. Itwas shown that this remote sensing dataset revealed smi ilar temporal and spatial features ofwind field andSSTas\npeople reported based onin situinvestigation. DailySSTandwind forcingdata during Jan. 2nd to the8th, 2002were thus\nfurther used to study the short-term temporalpattern ofZhe-MinCoastalWaterand its relationshipwithwind forcing. Two\nsmi plifiedmethodswere attempted to estmi ate the area ofZhe-Min CoastalWater distributed. One usedSST≤17℃and\nthe other usedSSTA≤-1℃as the criteria. Itwas demonstrated thatwind was the key factor controlling the daily\nvariation ofSSTin theTaiwan Strait. The area ofZhe-Min CoastalWaterwas highly correlatedwithwind stress, with its\ncorrelation coefficient(R2) reaching 0·90.