文献类型：期刊文献

英文题名：Impact of a gravity wave process on the upper stratospheric ozone valley on the Qinghai-Tibetan Plateau

作者：Wang, Jundong[1];Wan, Lingfeng[2];Chang, Shujie[1,3];He, Haotian[1]

机构：[1]Guangdong Ocean Univ, South China Sea Inst Marine Meteorol,Minist Nat Re, Coll Ocean & Meteorol,Key Lab Climate Resources &, Lab Coastal Ocean Variat & Disaster Predict,Key La, Zhanjiang 524088, Peoples R China;[2]Ocean Univ China, Inst Adv Ocean Study IAOS, Frontier Sci Ctr Deep Ocean Multispheres & Earth S, Phys Oceanog Lab POL, Qingdao 266100, Peoples R China;[3]Univ Leeds, Sch Earth & Environm, Leeds LS2 9JT, England

年份：2024

卷号：155

期号：3

起止页码：2439

外文期刊名：THEORETICAL AND APPLIED CLIMATOLOGY

收录：SCI-EXPANDED(收录号：WOS:001141870200002)、、WOS

基金：No Statement Available

语种：英文

外文摘要：Atmospheric gravity waves are essential meso-small-scale oscillations that facilitate material exchange within the atmosphere. These waves can significantly affect the ozone layer in the Upper Troposphere and Lower Stratosphere (UTLS) on the Qinghai-Tibetan Plateau. However, the influence of gravity wave dynamic processes on upper stratospheric ozone has rarely been studied. This paper identifies the gravity waves on the Tibetan Plateau based on ECMWF Reanalysis 5 (ERA5) data, analyzes the response of the upper stratospheric ozone to the event, and simulates the dynamic propagation mechanism of gravity waves by the Weather Research and Forecasting (WRF) model. This analysis reveals that between 15:00 and 21:00 UTC on July 29, 2015, gravity waves propagated from the surface of Tibetan Plateau (450 hPa) up to the upper stratosphere (20 - 3 hPa) in an arc-shaped structure and tilted to the east with height. The gravity wave signals started to weaken at 21:00 UTC on the same day. Influenced by the easterly rapids, gravity waves partially broke near 3 hPa at 02:30 UTC on July 30, but gravity wave signals were still present, and gravity waves completely broke and released energy at 04:00 UTC. During this process, ozone in the 20-3 hPa region (upper stratosphere) on the Qinghai-Tibetan Plateau responds well to gravity waves, and the ozone mixing ratio began to drop in ozone concentration 30 min after the partial breakup (03:00 UTC). The ozone dropped drastically by about 0.014 ppmv from 04:00 to 05:00 UTC. The WRF simulation results agree well with ERA5 and accurately capture the intricate characteristics of gravity waves. Furthermore, the breakup of gravity waves caused a total drop in ozone of 0.024 ppmv.