从第三极到北极: 积雪变化研究进展
|
Changes of snow cover in the Third Pole and the Arctic
|
图4. 相对于1981—2010年, 北极陆地区域(> 60° N)1967—2016年4月(a), 5月(b)和6月(c)的月积雪范围变化[ |
Fig.4. Monthly snow cover extent for Arctic land areas (> 60° N) for April (a), May (b) and June (c) from 1967 to 2016. Anomalies are relative to the average for 1981—2010 and standardized[ |
![]() |