Multiscale Combined Action and Disturbance Characteristics of Pre-summer Extreme Precipitation Events over South China

2022 ◽  
Author(s):  
Hongbo Liu ◽  
Ruojing Yan ◽  
Bin Wang ◽  
Guanghua Chen ◽  
Jian Ling ◽  
...  
Keyword(s):  
South China ◽  
Extreme Precipitation ◽  
Extreme Precipitation Events ◽  
Combined Action ◽  
Precipitation Events

A possible mechanism for the occurrence of wintertime extreme precipitation events over South China

2018 ◽  
Vol 52 (3-4) ◽  
pp. 2367-2384 ◽  
Author(s):  
Wenyu Huang ◽  
Zifan Yang ◽  
Xinsheng He ◽  
Daiyu Lin ◽  
Bin Wang ◽  
...  
Keyword(s):  
South China ◽  
Extreme Precipitation ◽  
Extreme Precipitation Events ◽  
Precipitation Events

scholarly journals Changes in daily extreme precipitation events in South China from 1961 to 2011

2014 ◽  
Vol 25 (1) ◽  
pp. 58-68 ◽  
Author(s):  
Zhengguo Ren ◽  
Mingjun Zhang ◽  
Shengjie Wang ◽  
Fang Qiang ◽  
Xiaofan Zhu ◽  
...  
Keyword(s):  
South China ◽  
Extreme Precipitation ◽  
Extreme Precipitation Events ◽  
Precipitation Events

scholarly journals Water vapor isotopes indicating rapid shift among multiple moisture sources for the 2018–2019 winter extreme precipitation events in southeastern China

2022 ◽  
Vol 26 (1) ◽  
pp. 117-127
Author(s):  
Tao Xu ◽  
Hongxi Pang ◽  
Zhaojun Zhan ◽  
Wangbin Zhang ◽  
Huiwen Guo ◽  
...  
Keyword(s):  
Water Vapor ◽  
South China ◽  
Extreme Precipitation ◽  
Southeastern China ◽  
China Sea ◽  
Moisture Source ◽  
Moisture Sources ◽  
Source Regions ◽  
Extreme Precipitation Events ◽  
Precipitation Events

Abstract. In the East Asian monsoon region, winter extreme precipitation events occasionally occur and bring great social and economic losses. From December 2018 to February 2019, southeastern China experienced a record-breaking number of extreme precipitation events. In this study, we analyzed the variation in water vapor isotopes and their controlling factors during the extreme precipitation events in Nanjing, southeastern China. The results show that the variations in water vapor isotopes are closely linked to the change in moisture sources. Using a water vapor d-excess-weighted trajectory model, we identified the following five most important moisture source regions: South China, the East China Sea, the South China Sea, the Bay of Bengal, and continental regions (northwestern China and Mongolia). Moreover, the variations in water vapor d excess during a precipitation event reflect rapid shifts in the moisture source regions. These results indicate that rapid shifts among multiple moisture sources are important conditions for sustaining wintertime extreme precipitation events over extended periods.

scholarly journals Water vapor isotopes indicating rapid shift among multiple moisture sources for the 2018/2019 winter extreme precipitation events in Southeast China

2021 ◽  
Author(s):  
Tao Xu ◽  
Hongxi Pang ◽  
Zhaojun Zhan ◽  
Wangbin Zhang ◽  
Huiwen Guo ◽  
...  
Keyword(s):  
Water Vapor ◽  
South China ◽  
Extreme Precipitation ◽  
Southeast China ◽  
China Sea ◽  
Moisture Source ◽  
Moisture Sources ◽  
Source Regions ◽  
Extreme Precipitation Events ◽  
Precipitation Events

Abstract. In the East Asian monsoon region, winter extreme precipitation events occasionally occur and bring great social and economic losses. From December 2018 to February 2019, Southeast China experienced a record-breaking number of extreme precipitation events. In this study, we analyzed the variation of water vapor isotopes and their controlling factors during the extreme precipitation events in Nanjing, Southeast China. The results show that the variations of water vapor isotopes are closely linked to the change of moisture sources. Using a water vapor d-excess weighted trajectory model, we identified five most important moisture source regions: South China, East China Sea, South China Sea, Bay of Bengal, and Continental regions (Northwest China and Mongolia). Moreover, the variations of water vapor d-excess during a precipitation event reflect rapid shifts of moisture source regions. These results indicate that rapid shifts among multiple moisture sources are important conditions for sustaining wintertime extreme precipitation events over extended periods.

scholarly journals Moisture Sources for Wintertime Extreme Precipitation Events Over South China During 1979–2013

2018 ◽  
Vol 123 (13) ◽  
pp. 6690-6712 ◽  
Author(s):  
Wenyu Huang ◽  
Xinsheng He ◽  
Zifan Yang ◽  
Tianpei Qiu ◽  
Jonathon S. Wright ◽  
...  
Keyword(s):  
South China ◽  
Extreme Precipitation ◽  
Moisture Sources ◽  
Extreme Precipitation Events ◽  
Precipitation Events

scholarly journals Mudanças na Estrutura Termodinâmica da Atmosfera na Presença de Vórtices Ciclônicos de Altos Níveis: Um Episódio de Precipitação Extrema no Semiárido Brasileiro (Changes in the Atmospheric Thermodynamic Structure in the Presence of Upper Level...)

2012 ◽  
Vol 5 (4) ◽  
pp. 877
Author(s):  
Magaly De Fatima Correia ◽  
Weber Andrade Gonçalves ◽  
Maria Regina da Silva Aragão ◽  
Maryfrance De Cassia S. Diniz
Keyword(s):  
Extreme Precipitation ◽  
Extreme Rainfall ◽  
Thermodynamic Structure ◽  
Extreme Precipitation Events ◽  
Brazilian Semiarid ◽  
Combined Action ◽  
Upper Level ◽  
The Relationship ◽  
Precipitation Events

A natureza da relação entre a energia potencial convectiva (CAPE), índice de instabilidade K e altas taxas de precipitação sob a influência de vórtices ciclônicos de altos níveis (VCAN) é investigada. Dados de radiossondas realizadas em Petrolina - PE foram utilizados para diagnosticar mudanças na estrutura termodinâmica da atmosfera. Totais diários de precipitação coletados na estação meteorológica de superfície permitiram avaliar a eficiência da utilização dos índices K e CAPE na determinação do grau de instabilidade da atmosfera e previsão de chuvas extremas. A relação entre valores elevados de CAPE e registros de precipitação é evidente no período de estudo. Entretanto, a existência de valores elevados desse índice não implica necessariamente na ocorrência de chuva. As chuvas abundantes e enchentes registradas na região de Petrolina no mês de janeiro de 2004 resultaram da ação conjunta de sistemas atmosféricos de escala local e sinótica. Mecanismos dinâmicos associados com VCAN foram determinantes para liberação ou supressão da atividade convectiva. Palavras - chave: eventos extremos de precipitação, vórtices ciclônicos de altos níveis, convecção, CAPEMAX. Changes in the Atmospheric Thermodynamic Structure in the Presence of Upper Level Cyclonic Vortices: An Episode of Extreme Precipitation in the Brazilian Semiarid   ABSTRACT The nature of the relationship between convective potential energy (CAPE), the instability index K and high rainfall rates under the influence of upper level cyclonic vortices is investigated. Upper air sounding data collected in Petrolina – PE, Brazil, were used to diagnose changes in the thermodynamic structure of the atmosphere. Daily precipitation totals observed at the surface meteorological station allowed evaluation of the K and CAPE efficiency in the determination of the degree of atmospheric instability and prediction of extreme rainfall. The relationship between high CAPE values and precipitation is evident in the period of study. However, high CAPE values may not lead to rainfall. The large rainfall totals and flooding registered in the Petrolina region were a result of the combined action of local and synoptic scale atmospheric systems. Dynamical mechanisms associated with VCAN played a major role in the enhancement or inhibition of convective activity.Keywords: extreme precipitation events, upper level cyclonic vortices, convection, CAPEMAX

scholarly journals Semiarid grasslands and extreme precipitation events: Do experimental results scale to the landscape?

Ecology ◽  
2021 ◽  
Author(s):  
Alison K. Post ◽  
Kristin P. Davis ◽  
Jillian LaRoe ◽  
David L. Hoover ◽  
Alan K. Knapp
Keyword(s):  
Extreme Precipitation ◽  
Experimental Results ◽  
Extreme Precipitation Events ◽  
Precipitation Events
Sign in / Sign up

Export Citation Format

Share Document