Upward transport of air mass during a generation of orographic waves in the UTLS over the Tibetan Plateau

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	Upward transport of air mass during a generation of orographic waves in the UTLS over the Tibetan Plateau
	Wei, D; Tian, WS; Chen, ZY; Zhahg, JK; Xu, PP; Huang, Q; Han, YY; Zhang, J
刊名	CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
	2016-03
卷号	59 期号:3 页码:791-802
关键词	Orographic wave Upper troposphere and lower stratosphere Stratosphere and troposphere exchange WRF model
ISSN号	0001-5733
其他题名	青藏高原上空UTLS区域一次地形重力波过程中的物质上传
通讯作者	Wei, D ; Tian, WS (reprint author), Lanzhou Univ, Coll Atmospher Sci, Minist Educ, Key Lab Semiarid Climate Change, Lanzhou 730000, Peoples R China. ; Wei, D (reprint author), Lanzhou Cent Meteorol Observ, Lanzhou 730020, Peoples R China.
中文摘要	利用美国航空航天局MERRA(Modern-Era Retrospective Analysis for Research and Applications)再分析资料和MODIS(Moderate-Resolution Imaging Spectroradiometer)卫星资料以及欧洲气象中心ECMWF-Interim(European Centre for Medium-Range Weather Forecasts)再分析资料,分析了发生于青藏高原北侧上空的一次地形重力波事件,并使用中尺度预报模式WRF-ARW.V3.0(Weather Research and Forecasting model,V3.0)对其进行了数值模拟.在此基础上,诊断分析了此次地形重力波在UTLS(Upper Troposphere and Lower Stratosphere)区域造成的物质和能量垂直传输特征.分析结果表明这一中尺度地形重力波信号的水平波长约为600 km,与地形扰动水平尺度接近,重力波在对流层中传播的垂直波长约为3 km,在垂直方向上随着高度的增加呈现出由东向西倾斜的结构特征.此次地形重力波上传进入平流层并在150 hPa附近破碎,波破碎后动量通量在短时间内发生了强烈的衰减,重力波携带的能量在破碎高度附近释放.重力波破碎的同时垂直方向湍流混合变得异常强烈,湍流交换系数可在短时间内增加到背景值的8倍以上,剧烈湍流混合过程导致了对流层上层的空气进入平流层,使下平流层空气出现了位势涡度和臭氧的低值区,在浮力频率的垂直剖面中也可以看到由于地形重力波过程造成的平流层下层浮力频率异常低值区.
学科主题	Geochemistry & Geophysics
出版地	BEIJING
语种	中文
WOS记录号	WOS:000371754700003
内容类型	期刊论文
源URL	[http://ir.lzu.edu.cn/handle/262010/182657]
专题	大气科学学院_期刊论文
推荐引用方式 GB/T 7714	Wei, D,Tian, WS,Chen, ZY,et al. Upward transport of air mass during a generation of orographic waves in the UTLS over the Tibetan Plateau[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2016,59(3):791-802.
APA	Wei, D.,Tian, WS.,Chen, ZY.,Zhahg, JK.,Xu, PP.,...&Zhang, J.(2016).Upward transport of air mass during a generation of orographic waves in the UTLS over the Tibetan Plateau.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,59(3),791-802.
MLA	Wei, D,et al."Upward transport of air mass during a generation of orographic waves in the UTLS over the Tibetan Plateau".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 59.3(2016):791-802.