近50 a黑龙江省5—9月气象干旱及大气环流异常特征
王莹, 张舒, 徐永清, 阙粼婧, 李新华, 黄英伟, 陈雪, 王蕾

Meteorological drought and atmospheric circulation anomalies characteristics in Heilongjiang Province from May to September in recent 50 years
WANG Ying, ZHANG Shu, XU Yongqing, QUE Linjing, LI Xinhua, HUANG Yingwei, CHEN Xue, WANG Lei
图3 1970—2020年5月(a、b、c)、6月(d、e、f)、8月(g、h、i)黑龙江省中旱(a、d、g)、重旱(b、e、h)、特旱(c、f、i)日数空间分布(单位:d)
Fig.3 Spatial distribution of days of moderate drought (a, d, g), severe drought (b, e, h) and extreme drought (c, f, i) in Heilongjiang Province in May (a, b, c), June (d, e, f) and August (g, h, i) from 1970 to 2020 (Unit: d)