Under the new study, the United Kingdom, the analysis carried out by an international team of scientists, one of the group Hadley Center, Britain’s Meteorological Agency that the increase of greenhouse gases released during the 20th century, an increase of rainfall. Although previous studies found that human activities have changed the air temperature and sea level rise and ocean temperatures, this is the first clear evidence that an increase in overall precipitation.

The study is published in the journal Nature, the British recovered from the unusual to see heavy rain in some areas more than 1 month’s decline in rainfall in the space of several hours. Dr. Peter Toth, climate scientist at the University of Reading and co-author of the paper, said: “This document is understandable, there are a large number of human activities affect global rainfall patterns, including increased precipitation in the north of 50 degrees north latitude, In this area, including the United Kingdom.

“The wet winter in the United Kingdom is expected that this will lead to more extreme precipitation, while summer is expected to be drier. But it may be based on climate change, there will be increased, even in extreme precipitation generally dry.” Recent events related to abnormal Weather conditions, with tropical ocean. The biggest problem in the UK is a great uncertainty about what will happen in the future of extreme rainfall. ”

Dr. Francis Zwiers of the Canadian Climate Center model in Toronto, and his colleagues compared records of global rainfall between 1925 and 1999, a global network of climate history, focusing on the 40 degrees north latitude and between the south and the north of 70 degrees . They pointed out that the focus of the precipitation forecast different climate models – some involving only natural trends and others, taking into account the impact of human activities on climate change.

These models, including the impact of human activities proposed by the heavy rains in the northern hemisphere mid-latitudes in the Southern Hemisphere in the deep sea in tropical and subtropical and lower rainfall in the tropical and sub-tropical Northern Hemisphere. When the researchers analyzed the historical record, they found more accurate. Global warming is likely to lead to more rainfall because of the higher atmospheric pressure to improve their water vapor.

Boshialun Myers, climate dynamics group at Oxford University, said: “This is a very important document.” We now know that the external drive as volcanic eruptions affect large-scale precipitation, but for the first time this paper fingerprint of human Impact. This means that the precipitation trends, they may indicate the future to find out more. ”

Dr. Huntingford, of the Center for Ecology and Hydrology, said: “It has been confirmed that the burning of fossil fuels have to change the pattern of rainfall at the global level. Here, we have to understand how they found a significant adjustment into the local changes in extreme precipitation events.

“And after that, we have a project in the future, how to carbon dioxide emissions could lead to further changes in local rainfall. This is a very regional rainfall is expected to be very important to help governments prepare for the possibility of some Circumstances, is a dangerous climate change. “