Decrease of Pleasant Weather Days by The End of the Century

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( — January 23, 2017) — According to a study published in the journal Climatic Change, among the biggest global warming’s losers of the pleasant sunny days, will be Rio de Janeiro, Miami and a large part of Africa, while Europe and Seattle will gain nicer weather.

Karin van der Wiel, a meteorology researcher at Princeton University and the National Oceanic and Atmospheric Administration (NOAA), also the lead author of the study, explained the definition of pleasant weather.

“It’s not too cold. It’s not too hot. It’s not too humid,” she said and added that this is the type of weather when you can go outside and enjoy yourself.

On average, the world enjoys 74 days of nice weather. However, by 2035 the number of such days will drop to 70 and then to 64 in the last two decades of the 21st century.

Days with nice weather are considered to be those with a temperature between 64 and 86 degrees when there is no excessive humidity and no rain.

Due to large regional differences, the public will be affected by these changes based on their area of residence and on the time of the year. The United States will lose, on average, nine mild summer days, but it will also gain several beautiful days during winter, spring and autumn.

Study shows that Washington, Chicago, New York and Dallas will lose two weeks of pleasant weather during summer, but these cities will have the pleasant weather days restored during other times of the year.

Global warming’s biggest losers will be the tropical regions and almost all of Africa, eastern South America, Southeast Asia and northern Australia.
Rio de Janeiro will lose 40 days of good weather per year, while Miami will lose a great deal of its mild summer days and almost a month of beautiful spring and autumn days by 2100.

NOAA climate scientist and co-author, Sarah Kapnick, said that the changes will be more dramatic in parts of the developing world where there is a highly-concentrated population.

At the same time, some countries, especially northern developed ones, will gain some of what the tropics had lost. England and Northern Europe will be on the winning side.

Seattle should pick up nine mild days and Los Angeles, which already has a lot of nice weather, is supposed to get six extra by the end of the century.

Climate scientists usually focus on extreme weather events – high temperatures, tropical storms, droughts, floods, and how they could get worse as the Earth gets warmer. But, Kapnick said that this time she wanted to look at nice weather as she gained the inspiration from her friends who are always asking her for help when selecting their wedding date, hoping for a good weather day.

National Center for Atmospheric Research scientist, Gerald Meehl, who studies extreme weather, said that a decrease in mild weather may not result in economic and health costs but that there are other factors to consider such as its effects on tourism or simple human enjoyment.