久久成人黄色-久久成人精品-久久成人精品免费播放-久久成人精品视频-天天综合在线视频-天天做人人爱夜夜爽2020毛片

0755-28685967

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

Time:2019-08-14 Views:515
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: 花季传媒app下载v3.048 | 欧美性生大片免费观看 | 亚洲欧美日韩一区二区在线观看 | 国产第二区| 视频在线色| 狠狠狠综合色 | 特级毛片aaaa级毛片免费 | 成人性欧美丨区二区三区 | 成年人免费黄色 | 色一情一区二区三区四区 | 色原网站 | 国产日本亚洲欧美 | 免费可以直接观看的毛片 | 蜜桃精品视频在线 | 成人免费视频一区二区 | 我不卡伦理 | 国产极品视频 | 国产在线精品观看一区 | 亚洲国产日韩欧美一区二区三区 | 国产精品18久久久久久久久久 | 亚洲日本韩国在线 | 亚洲国产精品久久精品成人 | 国产91小视频 | 99久热这里只有精品免费 | 亚洲欧美日韩高清 | 九九re | 青青伊人影院 | 天天爽夜夜爽一区二区三区 | 99视频在线免费观看 | 日本在线高清不卡 | 精品一区二区三区三区 | 麻豆视频一区二区三区 | 色片免费网站 | avtt香蕉 | 啪啪福利视频 | 五月间天堂 | 久久99热精品免费观看欧美 | 国产福利区一区二在线观看 | 亚州欧美 | 亚洲视频色图 | 亚洲视频黄色 |