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Tropical cyclone activities in the Western North Paci fi c in 2022

TROPICAL CYCLONE RESEARCH AND REVIEW 2024年第2期13卷 125-135页

作者： Huang, Xin Bai, Lina Yu, Zifeng Chan, Johnny C. L. Yu, Hui Tang, Jie Guo, Rong Wan, Rijin China Meteorol Adm Shanghai Typhoon Inst Shanghai 200030 Peoples R China Asia Pacific typhoon Collaborat Res Ctr Shanghai Peoples R China City Univ Hong Kong Sch Energy & Environm Hong Kong Peoples R China

Based on the best-track dataset from the Shanghai typhoon Institute/China Meteorological Administration, the paper provides a comprehensive summary and analysis of tropical cyclone (TC) activities in the Western North Pacific (WNP) and the South China Sea (SCS) for 2022. Using the historical climatology from 1951 to 2020, the anomalous conditions during 2022 in TC frequency, origin locations, tracks, intensity, and duration for the entire ocean basin as well as landfall events in China are examined. Results show that the overall TC frequency is slightly lower than normal, but the multiple TC events have a very high frequency of occurrence. Origin locations of TCs, which mark the starting points of their paths, show a large westward and northward deviation from climatology. Around 40% of the named TCs exhibit a shift in their direction of movement from westerly to easterly. Additionally, comparisons of the means, medians, upper and lower quartiles all indicate that the intensity of TCs in 2022 is generally lower than the climatology, with the duration of TCs at tropical storm intensity or above being shorter than usual. A notable observation is the fewer incidence of TC landfalls in China, but with a geographical concentration in Guangdong Province. These anomalous annual TC activities are influenced by related atmospheric and oceanic environmental conditions modulated by multi-scale climate variability. The findings provide useful information for enhancing disaster mitigation strategies in the Asia-Pacific region. (c) 2024 The Shanghai typhoon Institute of China Meteorological Administration. Publishing services by Elsevier B.V. on behalf of KeAi Communication Co. Ltd. This is an open access article under the CC BY-NC-ND license (http://***/licenses/by-nc-nd/4.0/).

关键词： Tropical cyclone Western North Paci fi c Anomalous characteristics Annual report typhoon committee region EL-NINO INTERANNUAL VARIABILITY INTERDECADAL VARIATIONS GENESIS FREQUENCY 3RD ASSESSMENT CLIMATE-CHANGE ENSO OSCILLATION INTENSITY

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