99超级在线视频-99成人-99成人国产精-99成人国产综合久久精品-99东京热这里有精品-99福利视频一区二区三区

Welcome to Shanghai Earntz Nonwovon Co.,ltd

Arctic ice melting at an alarming rate 2040 may be completely ice-free existence

Time:2020-03-04 Views:57
According to a report by Russian satellite network on May 5, a new report released by Arctic Council Arctic Monitoring and Evaluation Plan (AMAP) Working Group said that the Arctic is rapidly melting and may be completely ice-free by 2040. In the meantime, a study by the University of Leeds in the United Kingdom found that in Antarctica, ice melts at a rate of about one-third of its expected value.
Why Arctic ice and snow melted so fast, and Antarctic ice and snow melting speed so slow? Reported that the reason for this problem is more complicated. On the surface, there are many similarities between the North Pole and the Antarctic: both are cold, sparsely populated, snow-covered wastelands at two levels of the Earth. But they are also fundamentally different: the Arctic is a sea surrounded by land (such as Alaska, Canada and the northern part of Russia), while the Antarctic is a land surrounded by the sea. The Arctic is thought to be essentially a giant ice mass in the Arctic Ocean, while Antarctica is land covered by snow and ice.
The report said that "essentially, the two effects of global warming can be offset by each other in the context of Antarctica. Both polar sea ice are melting at a faster rate (the number of sea ice both hit a record low in February ), The snow cover in Antarctica has resulted in the formation of ice sheets in some areas. "
Climatologists point out that increasing snowfall is another side effect of climate warming. One of the consequences of global warming is the increase in ocean evaporation, as the heat of the ocean sends water vapor into the atmosphere. As the water vapor in the atmosphere increases, rainfall and snowfall will also increase accordingly.
In the past, snowfall in Antarctica was rare, but the warming of the mainland led to a wider range of frequent snowfalls in Antarctica. In contrast, however, the amount of ice in the Arctic has been steadily declining since the early 2000s.
Simply put, since the Arctic is cold, only less water vapor can enter the atmosphere. This means that there is very little snowfall in the Arctic and snowfall is scarce.
Antarctica has its own wind and ocean current, and thus isolated from the trend of global warming, while the Atlantic Ocean winds and the Arctic Ocean has brought a greater impact.
主站蜘蛛池模板: 福利姬液液酱喷水视频在线观看 | 国产精品区一区二区三 | 极品尤物在线第14集免费在线播放 | 欧美一区二区三区放荡人妇 | 国产免费破外女真实出血视频 | 日韩精品免费在线观看 | 丰满熟妇被猛烈进入高清片 | 国产综合有码无码视频在线观看 | 既残忍又真实 | av制服丝袜白丝国 | 91探花秘在线播放 | 91精品自拍视频在线观看 | 国产av无码专区a毛片 | 国产又猛又粗 | 日韩大片免费观看视频播放 | 日韩精品无码一区aaa片 | 中文字幕精品无码亚洲字幕 | 精品国产aⅴ无码一区二区 精品国产aⅴ无码一区二区蜜桃 | 毛片高清| 亚洲精品国产av成拍色拍婷婷 | 欧美精品亚洲精品日韩专区va | 亚洲精品成人网久久久久久 | 91亚洲| 精品人妻视频一区二区 | 丰满的少妇一区二区三区 | 欧美区国产区色图 | 91香蕉视频app下载最新版本 | 夜夜国产亚洲视频香蕉 | 色综合久久久久久久久8噜啦 | 国产精品爆乳奶水无码视频免 | 国产探花精品无码一区二区 | 日韩av无码一区二区三区无码 | 午夜在线不卡 | 午夜爽爽爽男女污污污网站 | 亚洲va中文在线播放免费 | 国产在线视频第一页 | 91探花国产综合在线精品 | 热久久国产欧美一区二区精品 | 青青青国产在线观看 | 中文字幕无| 国产一区二区三区在线免费观看 |