1979—2017年北极陆地气候变化趋势

陈晓龙, 王平

Climate changes over the Arctic land during 1979-2017

CHEN Xiaolong, WANG Ping

图7 1979—2017年ERA-Interim中北极陆地（a）气温年较差、（b）极端气温年较差、（c）最暖月份气温和（d）最冷月份气温的线性趋势 注：a、c、d中阴影表示4套观测分析资料中至少有3个与ERA-Interim的趋势同号;b中阴影表示通过t检验5%的显著性水平。

Figure 7 Linear trends of (a) annual temperature range, (b) extreme annual temperature range, surface air temperature in (c) warmest and (d) coldest month over the Arctic land during 1979-2017 based on ERA-Interim (In a, c, d, dotted shadings denote that at least 3 out of the 4 observational analysis datasets agree with the sign of trend in ERA-Interim; while in b they mean values exceeding the 5% significance level)