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北冰洋80°85°N浮冰区对流层大气的垂直结构

, PP. 48-59

Keywords: 北冰洋,热力学对流层顶,边界层高度,GPS探空

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Abstract:

利用2008年夏季中国第3次北冰洋考察所获取的GPS探空资料对北冰洋(79°85.5°N,144°170°W)浮冰区对流层大气的垂直结构进行了研究。结果表明:北冰洋浮冰区对流层中部大气的平均温度递减率为6.47℃/km;对流层顶高度为8.010.7km,平均为9.3km,对流层顶温度为-59.4-43.5℃,平均约-50.5℃;边界层中强逆温层层底高度、逆温强度和边界层高度均存在明显的日变化特征,强逆温层层底高度和边界层高度在夜间分别约为700和800m,白天随着太阳辐射的加强在午后两者分别可抬升至850和1000m以上,逆温强度则由夜间向白天明显减弱。

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