国产91精品福利在线-国产91精品福利资源在线观看-国产91精品高潮白浆喷水-国产91精品高清一区二区三区-国产91精品久久-国产91精品看黄网站在线观看

Welcome to Dongguan shengxin hardware machinery co. LTD
Service Hotline:
0769-81160049

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

Time:2019-08-14 Views:383
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: 97精品视频 | 国产又黄又爽胸又大免费视频 | 97夜夜澡人人爽人人喊中国片 | 日韩一区二区在线免费观看 | 国内精品一区视频在线播放 | 国产ts人妖 | 日韩一区二区三区四区五区毛片 | 国产一级淫片a免费播放口 国产一级婬片aa | 久久精品中文字幕 | 天天日天天操天天舔天天射 | 欧美国产麻豆一区精品 | 亚洲av最新 | 日本高清一区二区三区中文字幕 | 人人妻人人澡人人爽欧美一区双 | 日韩精品欧美一区二区 | 国产欧美日韩精品二区在线 | 国内综合av | 亚洲色欲久久久久综合网 | 日本成a人片在线 | 日韩乱伦一区二区 | 欧美人伦禁忌dvd放荡欲情 | 亚洲无码电影 | 欧美.日韩.日本中亚网站 | 亚洲国产精品99久久久久久久 | 91福利免费体验区观看区 | 午夜亚洲国产理论片国产麻豆 | 国产成人亚洲精品91专区高清 | 成人欧美视频在线观看 | 国产精品亚洲日韩aⅴ在线 国产精品亚洲日韩au在线 | 国产v福利久久精品剧情v | 午夜视频手 | 精品人成视频免费国产 | av在线播放影院亚洲 | 中文亚洲免费一区二区三区 | 日韩中文字幕免费视频 | 国产做a爱一级毛片久久 | 么公的好大好硬好深好爽视频 | 久久久久黑人强伦姧人妻 | 欧美午夜一区二区三区 | 无码免费视频免费播放 | 99视频九九精品视频在线观看 |