1969—2024年青藏高原降雹日数时空变化特征
冯晓莉, 赵占秀, 王鹤, 张红亮, 张欣, 管琴, 葛友荣

Spatiotemporal variations of hail days over the Qinghai-Xizang Plateau from 1969 to 2024
FENG Xiaoli, ZHAO Zhanxiu, WANG He, ZHANG Hongliang, ZHANG Xin, GUAN Qin, GE Yourong
图11 1969—2024年青藏高原各层假相当位温气候倾向率(a)、不同高度层假相当位温垂直梯度差值的年际变化(b)及假相当位温差值(2001—2024年平均值减去1969—2000年平均值)沿26°N—40°N平均的经度-高度剖面(c,单位:K)
Fig.11 The climatic trend rate of pseudo-equivalent potential temperature (θse) at different levels (a), interannual variations of the differences of vertical gradient of θse at different levels (b) from 1969 to 2024, and longitude-height cross-section of θse difference (mean for 2001-2024 minus mean for 1969-2000) averaged along 26°N-40°N (c, Unit: K) over the Qinghai-Xizang Plateau