Is Japan of the future possibly a rainy season in August?

When global warming advances, the end of the rainy season might be delayed, and it become like the summer of annoying of sunshiny shortage of this year.

They are following result in the Meteorological Agency Meteorological Research Institute.
"There is a possibility of facing the first day of autumn (It is August.8 this year) slowing in the southwest islands for one month in the vicinity, and no ends of the rainy season in West Japan in East Japan on 5-10 day. "

Method of presumption

2071 years forecast that normal temperature goes up by about two degrees? The movement of the weather in 2100 is calculated on the computer.
It compared it until 90 years with the situation of the rainy season of 30 years.
However, … Because the trend of the seasonal rain front was not predictable, the rainy season was presumed by the change in precipitation.

The result

・About the latter half of June of entering the rainy season from the vicinity of Kyushu to Tohoku when averaging.
・If it is an average, is it the middle of July when do the end of the rainy season? Precipitation during a day of the end of is 1mm increase.
・If it is an average, it increases by about 0.5mm in August when do the end of the rainy season, and the end of the rainy season is delayed.
→How from West Japan to the southwest islands to increase stood out.

The circulation of the water temperature of the surface of the sea and the atmosphere changes by Global warming according to the Meteorological Agency Meteorological Research Institute.
It is said that the place where the air that turns round the edge of Pacific anticyclone in the end of July is joined moves on Tokai in the Philippines to the vicinity of Japan, and the steam carried to Japan increases.

The end of the rainy season of Tohoku was not specified this year, and there was an influence such as becoming of farm products to which sunshiny shortage continued in various places around Tohoku the bad harvest.

Nagoya University earth water circulation research center
The seasonal rain front is activated in this tens of years and the rainfall ..".. has increased.
There is a possibility of becoming more active in the future if the cause is Global warming.
It is necessary to analyze the trend of the seasonal rain front to draw a conclusion" It is so.