It doesn't rain anymore, it does it in less time: in 12 days, half of what used to rain in a year

More and more news of torrential rains and floods comes to us, however it is not that it is raining more than before, but it does so in shorter time intervals. That is, in a more concentrated way.

According to a study that has collected data from weather stations around the world, in fact, it has been estimated that in just 12 days 50% of all the annual rain has rained. The study is published in Geophysical Research Letters, a magazine of the American Geophysical Union.

Rain more intense

The analysis used data from 185 ground stations during the 16 years from 1999 to 2014, a period in which the measurements could be validated with satellite data from the Tropical Rainfall Measurement Mission (TRMM).

Although the seasons were scattered throughout the world, most were in North America, Eurasia and Australia. To look forward, the scientists used simulations of 36 of the world's leading climate models that had data for daily rainfall.

Next, they indicated the projections of the climate model of the last 16 years of this century for individual observation stations. As he explains Angeline Pendergrass, NCAR scientist (National Center for Atmospheric Research) and lead author of the new study:

While climate models generally project only a small increase in rainfall in general, we find that this increase occurs as a handful of events with much more rainfall and, therefore, could cause more negative impacts, including flooding.

The findings, which suggest that flooding and associated damage could also increase, have implications for water managers, urban planners and emergency services.