A technical report from the National Institute for Space Research (INPE) published this Wednesday (3) explains what caused the devastating rain in Rio Grande do Sul, between the end of April and May.
The document clarifies that the combination of meteorological systems on different scales for successive days, among other factors, caused the extreme event, which had the highest volumes of rain between April 30 and May 2.
According to INPE, the sharp rise in river levels, especially in the Guaíba Hydrographic Basin, was caused by atmospheric instability with constant and intense rains.
According to meteorologists, the El Niño’s performance It also contributed to the intensification of the so-called “baroclinic flow” and favored episodes of above-average rainfall in the southern region.
Furthermore, air humidity was high during this period, since the Atlantic Ocean was warmer in relation to its climatological average.
The research institute said the exceptional volume of rain in a short period of time resulted in the rivers rising abruptly.
The highest level recorded in Guaíba in all history was reached on May 5th and 6th of this year, when the river reached 5.33 meters.
Until then, the record was 1941.
Source: CNN Brasil
I’m James Harper, a highly experienced and accomplished news writer for World Stock Market. I have been writing in the Politics section of the website for over five years, providing readers with up-to-date and insightful information about current events in politics. My work is widely read and respected by many industry professionals as well as laymen.
