首页|Moisture transport and sources of an extreme rainfall event of June 2021 in southern Xinjiang,China

Moisture transport and sources of an extreme rainfall event of June 2021 in southern Xinjiang,China

扫码查看
原文链接
  • 国家科技期刊平台
  • NETL
  • NSTL
  • 万方数据
A highly extreme rainfall event occurred during June 15-17,2021(21·6 event)over southern Xinjiang(SXJ)of China,with daily rainfall overwhelming the climatological annual total at three national stations along the north of Kunlun Mountains.During this event,the SXJ is situated upstream of the 500 hPa trough line and close to the 200 hPa upper jet stream entrance,favouring the upper(lower)level divergence(convergence)with intensified ascending motions and prominent moisture convergence.We examined the moisture paths and sources for this significant rainfall event using the Hybrid Single-Particle Lagrangian Integrated Trajectory(HYSPLT)model.The findings indicate that the majority of the moisture sources are located in areas west of the SXJ,extending from central Asia to the North Atlantic,whereas only a small number of trajectories originate from areas south or east of the SXJ.Seven relevant moisture sources for the rainfall event have been divided.About 80.0％of the total moisture is contributed by central Asia,which ranks top in terms of moisture contribution(～33.2％),north Eurasia(～25.7％),and water areas(～17.7％),including the Mediterranean,Black and Caspian Sea region,while fractional moisture contributions among the other four regions are all below 8.0％.When compared to other parts of China(such as South China and East China),where southerly and/or easterly trajectories are the predominant moisture channels,the distribution patterns of moisture trajectories during this event are noticeably different.

Extreme precipitationLagrangian modelSouthern XinjiangMoisture sourcesMoisture pathways

Yang-Ruixue CHEN、Bo LIU、Xin CAI、Tian-Jun ZHOU、Qing HE

展开 >

Plateau Atmosphere and Environment Key Laboratory of Sichuan Province,School of Atmospheric Sciences,Chengdu University of Information Technology,Chengdu 610225,China

Department of Atmospheric Science,School of Environmental Studies,China University of Geosciences,Wuhan 430074,China

State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics,Institute of Atmospheric Physics,Chinese Academy of Sciences,Beijing 100029,China

University of Chinese Academy of Sciences,Beijing 100029,China

Institute of Desert Meteorology,China Meteorology Administration,Urumqi 830013,China

Center of Central Asia Atmospheric Science Research,China Meteorology Administration,Urumqi 830013,China

展开 >

国家重点研发计划Second Tibetan Plateau Scientific Expedition and Research Program(STEP)of CAS国家自然科学基金Key Grant Project of Science and Technology Innovation Capacity Improvement Program of CUIT

2018YFA06056042019QZKK010242205008KYTD202201

2022

气候变化研究进展(英文版)
国家气候中心

气候变化研究进展(英文版)

CSCDSCI
影响因子：0.806
ISSN：1674-9278
年,卷(期)：2022.13(6)
  • 1
  • 2