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利用HOAPS资料研究南海海气界面热通量时空分布

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Keywords: 南海,海表温度,潜热,感热

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Abstract:

基于第二版本HOAPS(HamburgOceanAtmosphereParametersandFluxesfromSatellitedata)潜热、感热和海表温度(SST)3个参量的15a(1988~2002年)逐月平均资料,利用经验正交方法分解分析了这3个参量在南海的时空分布.结果表明,在夏季模态,潜热表现为南高北低,感热表现为中间低两边高,两者主要都是海洋向大气输送热量,但大气有时也向南海中部输送感热;在冬季模态,潜热和感热的高值区都在南海北部,东北部有一强中心,该中心主要是由风场引起的;夏季SST的变化导致全年SST呈准半年周期变化.冬季SST的变化滞后于潜热变化1个月;除夏季和冬季模态外,冬夏转换季节模态也十分明显;HOAPS与NCEP(NationalCenterofEnvironmentPrediction)资料相比,两者3个参量的时空分布大体一致,区别在于HOAPS资料能更好地反映参量的一些细微特征.

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