Analysis on the Climatic Characteristics of Shigatse during Winter in 2024

Yula; Zhuoma Ciren; Zhaxi Zongji

doi:10.3969/j.issn.1004-3403.2025.09.011

Abstract：During the winter from December,1st,2024 to February,28th,2025,Shigatse,Xizang exhibited remark-able climatic characteristics of being"warm,dry and windy".The average temperature was 1.4℃higher the precipi-tation was 64%less,and the gale days were 53 days more than the long-term level.The forest fire risk level in some southern forest areas was significantly elevated,with multiple forest fires occurring.The winter atmospheric circula-tion presented a"two-trough-one-ridge"pattern,with troughs over the Ural Mountains and East Asia,and a weak high-pressure ridge.The Western Pacific Subtropical High in winter 2024 was extremely strong,second only to its peak in 2016(with a subtropical high intensity index exceeding 350).The extended western ridge point maintained around 100°E,and the ridge line was positioned southward to approximately 15°N.The average 500 hPa wind field showed that the Qinghai-Tibet Plateau was generally controlled by straight westerly airflow,blocking the water va-por transport from the Indian Ocean.By combining ground-based observation data with ERA5 reanalysis data,this study has comparatively analyzed the causes of winter climate in Rikaze in 2024 and its impacts on regional agricul-ture and forestry,providing reference for winter forest fire prevention and disaster mitigation capability enhancement.