Article
Meteorology & Atmospheric Sciences
Xiaowen Huang, Dashan Wang, Laurent Z. X. Li, Qi Li, Zhenzhong Zeng
Summary: The heavy storm event in Henan province in July 2021 caused severe floods and casualties, especially in Zhengzhou city. This study investigated the role of urbanization in the storm event using numerical experiments and found that urbanization increased precipitation, shifted the precipitation center, and resulted in earlier and more concentrated rainfall in the major urban area.
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
(2022)
Article
Environmental Sciences
Kun Zhao, Xin Xu, Ming Xue, Zhe-Min Tan, Hao Huang, Ang Zhou, Xueqi Fan, Qiqing Liu, Chenli Wang, Juan Fang, Wen-Chau Lee, Qinghong Zhang, Fan Zhang, Gang Chen, Ji Yang
Summary: This study investigates the dynamics and microphysical processes of a severe rainfall event in Zhengzhou in 2021. The researchers found that abundant moisture from the oceans converged at Zhengzhou, resulting in a slow-moving convective storm and extreme rainfall. The study also highlights the significant contributions of raindrop concentration and ice-based and warm rain processes to the total rainfall.
Article
Geosciences, Multidisciplinary
Yunji Zhang, Huizhen Yu, Murong Zhang, Yawen Yang, Zhiyong Meng
Summary: This study explores the controlling factors of uncertainties and error growth in forecasting extreme heavy rainfall events in Zhengzhou, China. The results show that the strength of atmospheric systems, such as low-pressure systems and jet streams, determines the amount of rainfall. The study also finds that the predictability of these events is limited and that convective activities play a critical role in error growth.
SCIENCE CHINA-EARTH SCIENCES
(2022)
Article
Meteorology & Atmospheric Sciences
Yali Luo, Jiahua Zhang, Miao Yu, Xudong Liang, Rudi Xia, Yanyu Gao, Xiaoyu Gao, Jinfang Yin
Summary: This study investigates the influences of urban land cover on extreme rainfall in Zhengzhou city, China. The results show that urbanization reduces rainfall accumulation and affects the lateral inflows of moisture and high-theta(e) air.
ADVANCES IN ATMOSPHERIC SCIENCES
(2023)
Article
Meteorology & Atmospheric Sciences
Jinfang Yin, Haodong Gu, Xudong Liang, Miao Yu, Jisong Sun, Yanxin Xie, Feng Li, Chong Wu
Summary: In this study, the extreme rainfall event in Zhengzhou City in July 2021 was analyzed using observational data and model simulations. The model successfully reproduced the major weather systems and rainfall patterns, providing a possible explanation for the extreme rainfall production. The findings contribute to better understanding and forecasting of short-time extreme rainfall events.
JOURNAL OF METEOROLOGICAL RESEARCH
(2022)
Article
Environmental Sciences
Duanzhou Shao, Yu Zhang, Jianjun Xu, Hanbin Zhang, Siqi Chen, Shifei Tu
Summary: In this study, three different model perturbation schemes were used to represent model errors in the regional ensemble prediction systems, and their effects on heavy rainfall forecasting were investigated. The results showed that these perturbation schemes could provide forecast uncertainties for heavy rainfall events, with the stochastic physical perturbation method improving forecast skill.
Article
Geosciences, Multidisciplinary
Juergen Fuchsberger, Gottfried Kirchengast, Thomas Kabas
Summary: This paper presents the latest reprocessed data record (version 7.1) from the WegenerNet climate station networks covering the period from 2007 to 2020, focusing on two regions in southeastern Austria. It provides detailed information on station characteristics, data processing, practical applications, and recent advancements towards climate change research, showcasing the high-quality hydrometeorological data collected by the networks for scientific uses.
EARTH SYSTEM SCIENCE DATA
(2021)
Article
Meteorology & Atmospheric Sciences
Chang-Kyun Park, Minhee Chang, Chang-Hoi Ho, Kyung-Ja Ha, Jinwon Kim, Byung-Ju Sohn
Summary: This study examined the diurnal variations of heavy rainfall in Korea in July from 1980-2020, identifying two dominant patterns: all-day heavy rainfall (AD) and morning only heavy rainfall (MO) types. The atmospheric pattern related to severe heavy rainfalls in 2020 corresponds to a typical AD-type and resembles the 1991 heavy-rainfall system, suggesting a potential for extreme rainfall events in the future.
ADVANCES IN ATMOSPHERIC SCIENCES
(2021)
Article
Environmental Sciences
Paola Mazzoglio, Andrea Parodi, Antonio Parodi
Summary: In this study, the integration of CIMA Research Foundation's Weather and Research Forecasting (WRF) forecasts with the ITHACA Extreme Rainfall Detection System (ERDS) is described to enhance the forecasting skills of the overall early warning system. The analysis focuses on a heavy rainfall event in Palermo on July 15, 2020, which caused urban flooding. The results demonstrate that the improvement in quantitative precipitation scenario forecast skills, supported by H2020 LEXIS computing facilities and in situ observations, enables the ERDS system to better predict peak rainfall depths and potentially issue alerts.
Article
Meteorology & Atmospheric Sciences
Chaofan Li, Riyu Lu, Nick Dunstone, Adam A. Scaife, Philip E. Bett, Fei Zheng
Summary: This study examines the predictability and causes of extreme rainfall events in the Yangtze River basin in 2020, finding that the Indian Ocean warm sea surface temperature and the western North Pacific subtropical high played significant roles. However, the model forecast failed to accurately reproduce factors like wind convergence and intensification of the East Asian mid-latitude westerly jet observed in the event, hindering a better forecast of the intensity of the disaster.
ADVANCES IN ATMOSPHERIC SCIENCES
(2021)
Article
Multidisciplinary Sciences
Dong Liu, Qin Yu, Saurabh Kabra, Ming Jiang, Paul Forna-Kreutzer, Ruopeng Zhang, Madelyn Payne, Flynn Walsh, Bernd Gludovatz, Mark Asta, Andrew M. Minor, Easo P. George, Robert O. Ritchie
Summary: This study found that CrCoNi alloy displays exceptional crack growth toughness at 20 Kelvin, with high crack-initiation fracture toughness values and crack growth toughness values. The crack-tip deformation structures at 20 K involve nucleation and restricted growth of stacking faults, fine nanotwins, and transformed epsilon martensite, with coherent interfaces.
Article
Environmental Sciences
Dajun Zhao, Hongxiong Xu, Hui Wang, Yubin Yu, Yihong Duan, Lianshou Chen
Summary: The study found that anthropogenic climate change has had an impact on the coverage and intensity of extreme rainfall events in Henan during the '21 & BULL;7' event. The warming caused by human activities has created warm moist conditions in the region, leading to increased rainfall. This, combined with the induced cyclone-anticyclone pair and stronger winds, has contributed to the increase in precipitation. These findings provide important insights into the dynamic effects of anthropogenic warming on extreme rainfall events and provide additional evidence for the role of human-induced warming in the '21 & BULL;7' event in China.
ENVIRONMENTAL RESEARCH LETTERS
(2023)
Article
Environmental Sciences
Alessandra Mascitelli, Marco Petracca, Silvia Puca, Eugenio Realini, Andrea Gatti, Riccardo Biondi, Aikaterini Anesiadou, Luca Brocca, Gianfranco Vulpiani, Rosa Claudia Torcasio, Stefano Federico, Antonio Oriente, Stefano Dietrich
Summary: This study presents a comprehensive analysis of the hailstorms and floods that occurred on Lake Como, Italy in July 2021. By utilizing various observation sources and techniques, the research provides valuable insights into hydro-meteorological analysis. The findings demonstrate the effectiveness of combining innovative and operational techniques to improve the reliability of event descriptions.
Article
Meteorology & Atmospheric Sciences
Mukul Tewari, Fei Chen, Jimy Dudhia, Pallav Ray, Shiguang Miao, Efthymios Nikolopoulos, Lloyd Treinish
Summary: This article investigates the spatio-temporal variability of precipitation during the extreme rainfall event in Beijing in 2012, as well as the uncertainties in short-range weather forecasts. By using high-resolution urban-aware simulations, the authors find that the microphysics parameterizations and model initialization time greatly affect the forecast accuracy. Recommendations for improvement are also proposed.
ATMOSPHERIC RESEARCH
(2022)
Article
Engineering, Civil
Kun He, Guotao Ma, Xiewen Hu, Bo Liu, Mei Han
Summary: Landslides in hilly areas caused by heavy precipitation and anthropological disturbances can result in severe damage. Understanding the influencing factors and failure mechanisms of landslides is crucial for disaster mitigation and prevention. This paper conducted a comprehensive investigation using geological, experimental, and numerical methods to analyze the Lantian landslide, providing insights into the triggering factors and failure stages.
GEOMECHANICS AND ENGINEERING
(2022)