2025-11-01 09:43 浏览次数 11
北极海冰
Satellites have continually monitored polar sea ice since 1979, and since the turn of the twenty-first century, Arctic sea ice has declined relative to its 1979–2000 mean extent.
自1979年以来,卫星一直在监测极地周围的海冰情况,而到21世纪以来,北极的海洋结冰范围已降至1979-2000年的平均水平。