%0 Journal Article
%T A Study on Low-level Jets and Temperature Inversion over the Arctic Ocean by Using SHEBA Data<br>北极低空急流和低层逆温特征观测分析
%A CHENG Gang
%A GAO Zhiqiu
%A ZHENG Youfei
%A DAI Chengying
%A ZHOU Mingyu
%A <br>程刚
%A 高志球
%A 郑友飞
%A 代成颖
%A 周明煜
%J 气候与环境研究
%D 2013
%I 
%X Utilizing GPS sounding data collected during the Surface Heat Budget of the Arctic Ocean campaign over the period of one year (SHEBA, October 1997-October 1998), the authors characterized the boundary layer inversion and low-level jet over the Arctic Ocean. The results showed that 96% of the soundings (1115 UTC and 2315 UTC) had near-surface inversion layers, where 22% were surface-based and 70% were between 250 m and 850 m. During the winter months, the frequency of the surface-based inversion, the inversion depth, and the temperature change in the inversion layer were stronger than that during the summer months. During the year, the low-level jets occurred with a frequency of 41% and their average height was 520 m. The jets appeared mostly around 150 m, and 70% were below 600 m. The mean speed of the jets was 10.6 m·s-1 and the predominant wind direction was east and northeast; 75% of the wind speeds recorded ranged between 4 m·s-1 and 13 m·s-1. The analysis of the turning angle distribution between the jet core and the ground wind indicated that inertial oscillation was the main cause of the low-level jet in the Arctic region.
%K Inversions
%K Low-level jet
%K Arctic<br>逆温
%K 低空急流
%K 北极
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=E62459D214FD64A3C8082E4ED1ABABED5711027BBBDDD35B&cid=28A2F569B2458C17&jid=484C10BAB5333C14751916EACFF8295F&aid=AE8DAD4245F3E9A919C4503CA16DE691&yid=FF7AA908D58E97FA&vid=13553B2D12F347E8&iid=CA4FD0336C81A37A&sid=EA389574707BDED3&eid=4AD960B5AD2D111A&journal_id=1006-9585&journal_name=气候与环境研究&referenced_num=0&reference_num=33