The authors say that while China can take more steps to curb particulate matter,curbing the greenhouse gases that are helping to shrink Arctic sea ice, will take a global effort.
In newly published papers, scientists have reported that Arctic sea ice extent grew during the decades from the 1940s to the 1980s before declining after the 1980s.
In newly published papers, scientists have reported that Arctic sea ice extent grew during the decades from the 1940s to the 1980s before declining after the 1980s.
Over the last two decades, the Greenland and Antarctic ice sheets have been losing mass,glaciers have continued to shrink almost worldwide, and Arctic sea ice and Northern Hemisphere spring snow cover have continued to decrease in extent(“high confidence”).
Over the last two decades, the Greenland and Antarctic ice sheets have been losing mass,glaciers have continued to shrink almost worldwide, and Arctic sea ice and Northern Hemisphere spring snow cover have continued to decrease in extent(high confidence).- IPCC.
Elsewhere, the Arctic sea-ice crumbles, opening navigation and exploration routes into the polar regions, glaciers retreat, half the world's tropical and temperate forests, wetlands, and coral have gone or are threatened; storms, floods, and other natural disasters ripple around the world.
それらすべての要素が影響して、北極の海氷面積が減少しているのです。
So all of these effects contribute to reduce the sea ice cover in the Arctic.
科学界では、北極の海氷は地球全体の気候変動の指標として使われている。
Scientists use Arctic sea ice extent as an indicator of what's happening with the overall climate.
私たち皆がどのくらい北極の海氷を喪失させているかがはっきりする時は突然訪れます。
It suddenly becomesvery clear how we all contribute to this loss of Arctic sea ice.
北極の海氷の10年間の平均面積の平均的な減少は夏に最も急速であった(高い確信度);。
The average decrease in decadal mean extent of Arctic sea ice has been most rapid in summer(high confidence);
北極の海氷が9月と10月に史上最小に近くなり、南極でも今年に入り氷が複数回にわたって最小となった。
Arctic sea ice neared record lows in September and October, and Antarctica also saw record low ice a few times this year.
年以降、北極の海氷域の年間最小値が毎年9月に観測されており、現在までに約40%縮小した。
Since 1979, the minimum annual extent of sea ice in the Arctic, as observed each September, has dropped by about 40.
According to figures from the National Snow andIce Data Centre in Colorado, sea ice cover this winter was less than a third of what it was five years ago.
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