Global warming or initiating the area to become cold

Global warming or initiating the area to become cold

Hot summer caused colder winter and too much snowfall with the disappearance of the Arctic Sea ice.

Picture source: ChrisBarnes/CreativeCommons it is reported (the intersection of reporter and Luis Zhao) This seems to be that violates the intuition, even a bit funny - -The global warming may cause some areas to go through colder winter. But a new research has explained some areas in Northern Hemisphere, the climate process of associating more hot summer with sharp winter.

Generally speaking, the global average temperature has increased since later period of the 19th century, but it is fastest to intensify in the past 40 years. The intersection of state and of the intersection of city and atmosphere and the intersection of environment research and personnel of climate modeling JudahCohen of referral centre, star of Rec, Massachusetts of U.S.A., say, the Arctic average temperature is rising with the near level which is twice as much as the global speed. But though there is this kind of trend, in south, the American east and most North Europe areas of Canada, winter in Northern Hemisphere is becoming colder and colder and more and more extreme, the record-breaking cold current happening in England in December of 2010 is a very good example.

Cohen and colleague said on the network edition of " environment research bulletin " a few days ago, the further analysis to climatic data in 2010 to 1988 - -Including the snow and ice cover the ranges of the land and ocean respectively - -Contribute to explaining how the global warming drives the area to become cold. In their research, the scientist combines climate coming from various irrigation ditches with weather data in order to assess the snow situation of Eurasia, they have inferred subsequently what winter to the other places of Northern Hemisphere the weather cause influence for this factor.

First of all, it has initiated the extensive sea-ice to melt with other factors that Arctic in decades recently to become warm strongly. Researchers say, more open surface of water of the Arctic Ocean will cause more evaporation, and then increase the moisture in the atmosphere. The increase of cloudiness will be linked together over the ocean in the research summer and autumn hotter before this. With the arrival of winter, this initiated the increase of Siberia snow quantity conversely. Researchers find, the fact proves, the snow in October has the greatest influence on the climate of several months thereafter.

This is because the snow strengthened a temporary high-pressure system in extensive autumn in Siberia - -The high pressure in Siberia, it can strengthen one kind and is called climate phenomenon shaken at North pole, guide the cold air in the middle latitudes of going down south of winter area at the same time.

The climate scientist AnneNolin of the state university of Oregon of Valis city of the department says: "This is totally rational. " It proved the view of causality that the relevance with cold winter was put forward by researchers first in warm summer, but analyze in future research these trends help researchers to support what Nolin speak with the climate model " An interesting relation group " .

She emphasizes: "Every winter, Eurasia north the intersection of whole world and the intersection of snow and the intersection of quantity and most loud land. " Nolin points out, its only meaning lies in causing the tremendous influence to the climate in Northern Hemisphere. She adds, in fact, the research before this has already paid close attention to the relation between snow and north Pacific Ocean climate of Siberia.


Global warming or initiating the area to become cold