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The present research investigates the dynamics and underlying causes contributing to the exceptional intensity of Super Cyclonic Storm (SuCS) Amphan (16th to 21st May 2020) over the Bay of Bengal (BoB), as well as its impact on aerosol redistribution along the four cities of eastern coast and north-eastern India. Notably, the SuCS was formed during the first phase of the COVID-19 lockdown in India, giving it a unique aspect of study and analysis. Our analysis based on 30 years of climatology data from Modern-Era Retrospective Analysis for Research and Applications, Version 2 (MERRA-2) reanalysis reveals 'positive' monthly anomalous winds (0.8 to 1.6 m/s) prevailed over the central BoB for May 2020. The present study further found the evolution of 'barrier layer thickness'(BLT) leading up to landfall, noting a thickening trend from 8 to 3 days before landfall, contributing to maintaining warmer sea surface temperatures near the coast. Additionally, utilizing European Centre for Medium-Range Weather Forecasts (ECMWF), reanalysis version-5 (ERA-5) data, a mean positive sea surface temperature (SST) anomaly of 0.8 to 1 °C was observed 'before' cyclone period (10-15 May 2020) near the cyclogenesis point. A detailed examination of Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observations (CALIPSO) vertical cross-section plots during the cyclone's intensification stage reveals the presence of high-altitude clouds composed primarily of ice crystals. Further, analysis also indicates that the cyclone transported Sea-salt PM aerosols from the ocean, dispersing them in the landfall region.The aerosol optical Depth (AOD) data obtained from the National Aeronautics and Space Administration's (NASA) 'Clouds and the Earth's Radiant Energy System (CERES)' mission and MERRA-2 were also analysed, revealing that the cyclone redistributed aerosols over the Bengal basin region (mainly over 'Kolkata') and three other nearby cities along the track of the cyclone (i.e., Bhubaneswar (Odisha) Agartala (Tripura) and Shillong (Meghalaya) respectively).
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http://dx.doi.org/10.1016/j.scitotenv.2024.175501 | DOI Listing |
Nat Commun
August 2025
Department of Atmospheric and Oceanic Sciences and Institute of Atmospheric Sciences, Fudan University, 200438, Shanghai, China.
In dramatic contrast to the continuous intensification of strong Atlantic hurricanes moving into the Gulf of Mexico, super typhoons (SuperTYs) originating from the Northwest Pacific significantly weaken after entering the South China Sea (SCS). Using an idealized cyclone intensity model, we show that this striking discrepancy results from the SCS's buffering effects, including persistent topographic blocking by the Philippine archipelago and seasonally shifting atmospheric-oceanic constraints. The archipelago accounts for ~54% of typhoon weakening throughout the season, while environmental factors explain the remaining ~46% with the significant seasonal dependence on strong SCS monsoon-induced vertical wind shear in summer (~30%) and ocean cooling in autumn (~37%).
View Article and Find Full Text PDFStress Health
June 2025
Department of Psychology and Behavioral Sciences, Zhejiang University, Hangzhou, China.
Numerous studies have demonstrated that restoring feelings of safety helps alleviate posttraumatic stress disorder (PTSD) based on cross-sectional designs. However, feelings of safety may be affected by PTSD over time. As a result, how safety and PTSD interact in victims and their coexisting patterns remain unclear, particularly in children who have suffered from natural disasters.
View Article and Find Full Text PDFJ Environ Sci (China)
October 2025
State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China; University of Chinese Academy of Sciences, Beijing 100049, China.
The extraordinary Super Typhoon (STY) Muifa (2022) made landfall four times and had a significant impact on the coastal regions from south to north of China. Although previous studies have demonstrated the 'pumping effect' of typhoons on the enhancement of reactive nitrogen (N) wet deposition over the ocean, it is uncertain how N deposition is influenced by typhoons that make prolonged mechanism due to multiple landfalls. In this study, the N wet deposition induced by STY Muifa was investigated from the perspective of in- and below-cloud processes based on the Nested Air Quality Prediction Modeling System with an online tracer-tagging module.
View Article and Find Full Text PDFEur J Psychotraumatol
December 2025
Department of Psychology and Behavioral Sciences, Zhejiang University, Hangzhou, People's Republic of China.
We aimed to elucidate the temporal relationship between perceived social support, emotional self-disclosure and posttraumatic growth (PTG) in children. The super typhoon Lekima occurred on August 10, 2019, in China. Three waves of self-report questionnaires were administered to children at 3 months (T1, = 1596), 15 months (T2, = 1072), and 27 months (T3, = 483) following the typhoon.
View Article and Find Full Text PDFSmall
April 2025
Department of Gynecology and Obstetrics, Shanghai Key Laboratory of Anesthesiology and Brain Functional Modulation, Clinical Research Center for Anesthesiology and Perioperative Medicine, Translational Research Institute of Brain and Brain-Like Intelligence, Shanghai Fourth People's Hospital, School
Patterned micro/nanostructure arrays have shown the potential to effectively regulate cellular behavior, and their unique microstructure may address the limitations of conventional pore materials, leading to novel phenomena. In this work, a large-area gold micro/nano-array substrate with an average hole of ≈32 nm is designed and extensively screened. Precisely engineered nanopores on the substrate can effectively improve photothermal conversion efficiency, and instant heat dissipation in the absence of laser irradiation.
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