北冰洋80° 85°N浮冰区对流层大气的垂直结构

马永锋; 卞林根; 周秀骥; 逯昌贵; 窦挺峰; 汤洁

北冰洋80° 85°N浮冰区对流层大气的垂直结构

1.
中国气象科学研究院,北京 100081;中国科学院研究生院,北京 100049
2.
中国气象科学研究院,北京 100081

基金项目: 国家海洋局极地考察办公室和中国极地研究中心第3次北极考察专项经费资助。

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出版历程
- 收稿日期: 2010-07-25

Vertical structure of troposphere in the floating ice zone over the Arctic Ocean

1.
Chinese Academy of Meteorological Sciences, Beijing 100081, China;Graduate University of Chinese Academy of Sciences, Beijing 100049, China
2.
Chinese Academy of Meteorological Sciences, Beijing 100081, China

摘要

摘要: 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8.0 10.7 km,平均为9.3 km,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800 m,白天随着太阳辐射的加强在午后两者分别可抬升至850和1 000 m以上,逆温强度则由夜间向白天明显减弱。
- 北冰洋 /
- 热力学对流层顶 /
- 边界层高度 /
- GPS探空
Abstract: The vertical structure of troposphere over the Arctic Ocean floating ice region (79 85.5°N,144° 170°W) is presented by using the GPS radiosonde data obtained from the 3rd Chinese Arctic Expedition 2008. The results show that: the average temperature lapse rate of the middle troposphere is 6.47 ℃/km. The tropopause height (temperature) changes within 8.0 10.7 km(-59.4 -43.5 ℃), with a mean of 9.3 km(-50.5 ℃). The bottom height, strength of the stronger inversion in the boundary layer and the planetary boundary layer height all presents an obvious diurnal variation. The stronger inversion bottom height and the planetary boundary layer height are left to 850 and 1 000 m above at noon from 700 and 800 m at night, respectively. While the intensity of temperature inversion remarkably weakened from night to daytime.
- Arctic Ocean /
- thermal tropopause height /
- planetary boundary layer height (PBL height) /
- GPS sounding

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