1961—2017年南极冰盖近地面风时空变化研究
殷宝玲,刘琪,王叶堂

Spatial and temporal variations of the near-surface winds over the Antarctic Ice Sheet during 1961—2017
Baoling YIN,Qi LIU,Yetang WANG
图5 近50年来南半球环状模指数年际变化(灰色柱体是SAM的年平均值,蓝色实线是5年滑动平均,蓝色虚线是SAM变化线性趋势线)
Fig.5 Year-to-year variability in SAM index during the past 50 years (Grey stylidiums denotes the annually averaged SAM; Blue sold line is the 5-year running mean of SAM values; Blue dotted line is the linear regression of annual SAM)