Article
Meteorology & Atmospheric Sciences
Shen-Ming Fu, Yuan-Chun Zhang, Hui-Jie Wang, Huan Tang, Wan-Li Li, Jian-Hua Sun
Summary: Henan Province experienced the most severe torrential rainfall event since 1975, particularly in Zhengzhou. The interaction between a long-lived northwestward-moving mesoscale convective vortex (MCV) and its parent mesoscale convective system (MCS) was crucial in producing the extremely heavy rainfall in Zhengzhou. Air particles beneath the MCS over Henan were found to contribute to the formation of the MCV. The MCV reached its maximum intensity during coupling with the MCS before weakening and dissipating.
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
(2022)
Article
Environmental Sciences
Yu Shu, Jisong Sun, Chenlu Jin, Bingliang Zhuang
Summary: Reanalysis data and numerical simulation methods were used to simulate the formation and activity of MCVs in East China. The study found that MCVs mainly form in convective precipitation regions and at lower levels, and their formation mechanisms involve vorticity variation, divergence, and tilting. The results of the simulation are important for further understanding the formation mechanisms of MCVs.
Article
Meteorology & Atmospheric Sciences
Yuanchun Zhang, Jianhua Sun, Ruyi Yang, Ruoyun Ma
Summary: Based on the statistical analysis of MCSs over the second-step terrain along the Yangtze-Huaihe River Valley, this study explores the initiation and evolution of MCSs and their impact on downstream areas. The results show that the eastward-propagating MCSs significantly affect the development and enhancement of moist convection and vortices in the downstream regions.
ADVANCES IN ATMOSPHERIC SCIENCES
(2022)
Article
Meteorology & Atmospheric Sciences
Bastian Kirsch, Cathy Hohenegger, Felix Ament
Summary: This study uses surface-based observations from the FESSTVaL 2021 field experiment to investigate the morphology and growth of convective cold pools. Most cold pools are non-circular and have a cold core. The area of growing cold pools scales linearly with rainfall accumulation, while the expansion rate is not accurately described by conventional density-current theory.
QUARTERLY JOURNAL OF THE ROYAL METEOROLOGICAL SOCIETY
(2023)
Article
Meteorology & Atmospheric Sciences
Kelly Lombardo, Matthew R. Kumjian
Summary: This study investigated the discrete propagation event of a mature MCS in Cordoba Province, Argentina on 5 November 2018, and found that the behavior of the storm was modified by the presence of mountains, which resulted in the formation of isolated cells downstream of the mountains. The impact of the mountains on the storm's propagation varied depending on the height of the mountain peaks, with discrete propagation only occurring in the southern portion of the storm.
MONTHLY WEATHER REVIEW
(2022)
Article
Multidisciplinary Sciences
Mukund Gupta, Richard G. Williams, Jonathan M. Lauderdale, Oliver Jahn, Christopher Hill, Stephanie Dutkiewicz, Michael J. Follows
Summary: The expansive gyres of the subtropical ocean play a significant role in global organic carbon export. This study examines the nutrient pathways that replenish the subeuphotic layers in the gyre interior. Using a simulation model, the researchers find that mesoscale eddies flux nutrients from the shallow flanks of the gyre into the recirculating interior, contributing to the replenishment of subeuphotic layers along density surfaces. This nutrient relay sustains the productivity of the subtropical gyre.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Environmental Sciences
Hao Sun, Haoliang Wang, Jing Yang, Yingting Zeng, Qilin Zhang, Yubao Liu, Jiaying Gu, Shiye Huang
Summary: This study investigates the performance of FY-4A lightning data assimilation (LDA) in the forecast of non-typhoon oceanic mesoscale convective systems (MCSs). The results show that assimilating lightning data improves the accuracy and speed of simulations, and reduces forecast errors, especially during the analysis time and short-term forecast periods.
Article
Meteorology & Atmospheric Sciences
Abhishek Kumar Jha, Subrata Kumar Das, Sachin M. Deshpande, U. V. Murali Krishna
Summary: The Indian summer monsoon trough (MT) is a region extending from north-western India towards the Bay of Bengal, and the eastern rim of the MT is influenced by the monsoon low-pressure systems in the Bay of Bengal. This study focuses on the convective storms in the eastern rim and their relationship with the formation and propagation of the low-pressure systems. By analyzing radar observations, different categories of convective storms have been identified and it is found that the largest storms contribute the most precipitation.
Article
Meteorology & Atmospheric Sciences
Hao Chen, Weixin Xu, Nana Liu, Jianhua Sun, Jiaolan Fu
Summary: This study investigates the characteristics of mesoscale convective systems (MCSs) as a function of MCS organizational mode over China. Linear MCSs have much stronger convective intensity and heavier precipitation than nonlinear MCSs. Among nonlinear MCSs, broad-stratiform MCSs produce the heaviest rain rate and the largest amount of heavy rainfall.
MONTHLY WEATHER REVIEW
(2022)
Article
Geosciences, Multidisciplinary
Clement Vic, Solenne Hascoet, Jonathan Gula, Thierry Huck, Christophe Maes
Summary: An asymmetry in the clustering of oceanic surface material has been observed, where energetic and ephemeral submesoscale cyclonic fronts are associated with convergence zones and cluster surface material, while the anticyclonic counterparts do not have this effect. However, there has been contradictory literature on such asymmetry at the mesoscale. In this study, surface drifter trajectories combined with an altimetry-derived mesoscale eddy database in the North Atlantic show that mesoscale cyclones contain 24% more drifters than anticyclones. A numerical Lagrangian experiment using a mesoscale-resolving model reproduces the observational results and suggests that particles preferentially cluster in cyclonic regions.
GEOPHYSICAL RESEARCH LETTERS
(2022)
Article
Geosciences, Multidisciplinary
Shenming Fu, Zi Mai, Jianhua Sun, Wanli Li, Qi Zhong, Jiaren Sun, Yuanchun Zhang
Summary: The study investigated the common evolutionary features and associated mechanisms of long-lived eastward propagating mesoscale convective systems generated over the Tibetan Plateau. It found that these systems were mainly influenced by a favorable background environment and played a significant role in cyclonic vorticity production and transport in the eastern part of the plateau.
SCIENCE CHINA-EARTH SCIENCES
(2021)
Article
Meteorology & Atmospheric Sciences
Charly de Marez, Mathieu Le Corre, Jonathan Gula
Summary: The impact of various parameters on the lifecycle of anticyclonic eddies trapped in topographic depressions has been investigated. The study found that merger with submesoscale coherent vortices and wintertime convection play key roles in strengthening and maintaining the eddies, while bottom drag contributes to their decay. The sustaining of such eddies for several years is mainly attributed to the balance between merger and bottom drag.
Article
Meteorology & Atmospheric Sciences
Jia Wu, Song Yang, Chundi Hu, Junbin Wang, Qiaoling Ren
Summary: In recent decades, a novel Pacific-Atlantic seesaw/oscillation influences the sea level pressure anomalies over the northern subtropical region, mainly induced by North Tropical Atlantic sea surface temperature anomalies. This impacts the circulation and convection activities, with implications for early prediction of climate patterns.
ATMOSPHERIC RESEARCH
(2021)
Article
Meteorology & Atmospheric Sciences
Man-Yau Chan, Xingchao Chen, L. Ruby Leung
Summary: Modern global reanalysis products have greatly accelerated meteorological research in synoptic-to-planetary-scale phenomena. However, their use in studying tropical mesoscale convective systems (MCSs) and their regional-to-global impact has mostly been limited to supplying initial and boundary conditions for MCS-resolving simulations and providing information about the large-scale environments of MCSs. In this work, a Tropical MCS-resolving Reanalysis product (TMeCSR) was created over a region with frequent tropical MCSs. TMeCSR is produced by assimilating all-sky infrared radiances from geostationary satellites and other conventional observations into an MCS-resolving regional model using the Ensemble Kalman Filter. The resulting observation-constrained high-resolution (9-km grid spacing) data set is available hourly during the boreal summer (June-August) of 2017, during which widespread severe flooding occurred. Comparisons of TMeCSR and European Center for Medium Range Weather Forecast Reanalysis version 5 (ERA5) against independent satellite retrievals indicate that TMeCSR's cloud and multiscale rain fields are better than those of ERA5. Furthermore, TMeCSR better captured the diurnal variability of rainfall and the statistical characteristics of MCSs. Forecasts initialized from TMeCSR also have more accurate rain and clouds than those initialized from ERA5. The TMeCSR and ERA5 forecasts have similar performances with respect to sounding and surface observations. These results indicate that TMeCSR is a promising MCS-resolving data set for tropical MCS studies.
JOURNAL OF ADVANCES IN MODELING EARTH SYSTEMS
(2022)
Article
Multidisciplinary Sciences
Martin C. Arostegui, Peter Gaube, Phoebe A. Woodworth-Jefcoats, Donald R. Kobayashi, Camrin D. Braun
Summary: This study investigates the influence of ocean eddies on the behavior of pelagic predator communities in subtropical gyres. The results show that pelagic predator catch is consistently higher inside anticyclonic eddies compared to cyclones and non-eddy areas. The increased abundance of mesopelagic prey in anticyclone cores is attracting diverse predators and forming ecological hotspots.
Article
Engineering, Geological
Jui-Ming Chang, Hongey Chen, Ben Jong-Dao Jou, Nien-Chiao Tsou, Guan-Wei Lin
ENGINEERING GEOLOGY
(2017)
Article
Meteorology & Atmospheric Sciences
Xuwei Bao, Dan Wu, Xiaotu Lei, Leiming Ma, Dongliang Wang, Kun Zhao, Ben Jong-Dao Jou
JOURNAL OF METEOROLOGICAL RESEARCH
(2017)
Article
Meteorology & Atmospheric Sciences
Xiaomin Chen, Kun Zhao, Wen-Chau Lee, Ben Jong-Dao Jou, Ming Xue, Paul R. Harasti
JOURNAL OF APPLIED METEOROLOGY AND CLIMATOLOGY
(2013)
Article
Engineering, Ocean
Mingjun Wang, Kun Zhao, Wen-Chau Lee, Ben Jong-Dao Jou, Ming Xue
JOURNAL OF ATMOSPHERIC AND OCEANIC TECHNOLOGY
(2012)
Article
Meteorology & Atmospheric Sciences
Kun Zhao, Xinfeng Li, Ming Xue, Ben Jong-Dao Jou, Wen-Chau Lee
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
(2012)
Article
Engineering, Multidisciplinary
Yi-Chiang Yu, Ben Jong-Dao Jou, Huang-Hsiung Hsu, Chao-Tzuen Cheng, Yung-Ming Chen, Tsung-Jung Lee
JOURNAL OF THE CHINESE INSTITUTE OF ENGINEERS
(2014)
Article
Meteorology & Atmospheric Sciences
Sung-A Jung, Dong-In Lee, Ben Jong-Dao Jou, Hiroshi Uyeda
JOURNAL OF THE METEOROLOGICAL SOCIETY OF JAPAN
(2012)
Article
Meteorology & Atmospheric Sciences
Weixin Xu, Edward J. Zipser, Yi-Leng Chen, Chuntao Liu, Yu-Chieng Liou, Wen-Chau Lee, Ben Jong-Dao Jou
MONTHLY WEATHER REVIEW
(2012)
Article
Meteorology & Atmospheric Sciences
Wen-Chau Lee, Xiaowen Tang, Ben J. -D. Jou
MONTHLY WEATHER REVIEW
(2014)
Article
Geosciences, Multidisciplinary
Wei-Kuo Tao, Jainn Jong Shi, Pay-Lin Lin, Jhihying Chen, Stephen Lang, Mei-Yu Chang, Ming-Jen Yang, Chun-Chien Wu, Christa Peters-Lidard, Chung-Hsiung Sui, Ben Jong-Dao Jou
TERRESTRIAL ATMOSPHERIC AND OCEANIC SCIENCES
(2011)
Article
Meteorology & Atmospheric Sciences
Pin-Fang Lin, Pao-Liang Chang, Ben Jong-Dao Jou, James W. Wilson, Rita D. Roberts
WEATHER AND FORECASTING
(2012)
Article
Meteorology & Atmospheric Sciences
Hui Wang, Yali Luo, Ben Jong-Dao Jou
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
(2014)
Article
Meteorology & Atmospheric Sciences
Yali Luo, Renhe Zhang, Qilin Wan, Bin Wang, Wai Kin Wong, Zhiqun Hu, Ben Jong-Dao Jou, Yanluan Lin, Richard H. Johnson, Chih-Pei Chang, Yuejian Zhu, Xubin Zhang, Hui Wang, Rudi Xia, Juhui Ma, Da-Lin Zhang, Mei Gao, Yijun Zhang, Xi Liu, Yangruixue Chen, Huijun Huang, Xinghua Bao, Zheng Ruan, Zhehu Cui, Zhiyong Meng, Jiaxiang Sun, Mengwen Wu, Hongyan Wang, Xindong Peng, Weimiao Qian, Kun Zhao, Yanjiao Xiao
BULLETIN OF THE AMERICAN METEOROLOGICAL SOCIETY
(2017)
Proceedings Paper
Meteorology & Atmospheric Sciences
Lei Feng, Pao-Liang Chang, Ben Jong-Dao Jou
WEATHER RADAR AND HYDROLOGY
(2012)