沙漠与绿洲气象2025，Vol.19Issue(1)：40-48,9.DOI:10.12057/j.issn.1002-0799.2310.19002
2022年山东春、夏季旱涝转折成因分析
Mechanism of Drought-Flood Turning between Spring and Summer in 2022 in Shandong Province
摘要
Abstract
Based on NCEP reanalysis data and data from 122 national ground-based stations in Shandong Province,this paper investigates the precipitation anomalies and the causes of the drought-flood transition in Shandong during the spring and summer of 2022.From April to May 2022,the average precipitation in Shandong Province was 20.9 mm,the lowest for the same period since 1951.In contrast,precipitation from June to July reached 464.9 mm,the highest recorded for this period.The probability of reduced precipitation in spring and increased precipitation in summer was higher in Shandong during the La Nina decaying year,indicating that the La Nina event provided the background for the abnormal precipitation in Shandong during spring and summer 2022.The re-development of the La Nina event in spring,along with the Atlantic sea surface temperature anomaly,created the conditions for the active Northeast Cold Vortex(NECV)in April and May.The abnormal cyclonic circulation caused by the NECV,combined with the cyclonic circulation over the South China Sea,resulted in anomalous northerly airflow on the western flank,leading to significantly reduced precipitation in Shandong during April and May.In summer,the intensity of the Western Pacific Subtropical High(WPSH)shifted from weak to strong.The primary precipitation processes in summer were driven by the interaction between the warm,moist airflow along the edge of the WPSH and the cold air from the north,occurring during the staged northward shifts of the WPSH.The synoptic-scale processes,superimposed on the abnormal climatic background,led to the precipitation anomalies observed in spring and summer,as well as the transition from drought to flooding between the two seasons in Shandong in 2022.关键词
山东春、夏季降水异常/旱涝转折/拉尼娜/东北冷涡/西太平洋副热带高压Key words
abnormal precipitation in Shandong in spring and summer/drought-flood transition/La Nina/Northeast Cold Vortex/Western Pacific Subtropical High分类
天文与地球科学引用本文复制引用
商林,孟祥新,汤子东..2022年山东春、夏季旱涝转折成因分析[J].沙漠与绿洲气象,2025,19(1):40-48,9.基金项目
国家自然科学基金(41705025) （41705025）
山东省气象局重点项目(2023sdqxz15) （2023sdqxz15）
山东省气象局重点科研项目(2022sdqxz11) （2022sdqxz11）
山东省气象局重大天气过程专项(SDTQ2022-02) （SDTQ2022-02）
