湖南2022/2023年夏秋冬季持续极端干旱事件特征及成因分析
谢傲, 罗伯良, 邓剑波, 高霞霞

Characteristics and cause analysis of extreme and persistent drought in summer, autumn and winter in 2022/2023 in Hunan Province
XIE Ao, LUO Boliang, DENG Jianbo, GAO Xiaxia
图9 1981—2021/2022年湖南夏秋冬季总降水量和前期春季北半球SST的相关系数(等值线,仅显示通过α=0.10显著性检验的等值线)及2022年春季SSTA(填色,单位:℃)分布(a),2021年1月至2022年7月Niño3.4指数的时间演变(b)
Fig.9 Correlation coefficient between the total precipitation in summer,autumn and winter in Hunan and SST in the Northern Hemisphere in early spring from 1981 to 2021/2022 (contours, only displaying contour lines that pass the significance test at α=0.10) and SSTA in spring of 2022 (color shaded, Unit: ℃) (a), and temporal evolution of Niño3.4 index from January 2021 to July 2022 (b)