宁夏次季节旱涝急转事件识别及演变特征

高娜, 王素艳, 李欣, 高睿娜, 王岱

Identification and evolution characteristics of sub-seasonal drought-flood abrupt alternation events in Ningxia

GAO Na, WANG Suyan, LI Xin, GAO Ruina, WANG Dai

图6 1961—2023年宁夏旱涝急转事件累计发生频次（a，单位：次）及发生频率（b，单位：%）空间分布

Fig.6 Spatial distribution of cumulative occurrence frequency (a, Unit: times) and frequency (b, Unit: %) of drought-flood abrupt alternation events in Ningxia from 1961 to 2023