In Brazil there is an average increase in temperature and a change in precipitation, explains Inpe

Over the past few decades, Brazil has seen a temperature rise of 1.5 degrees Celsius in some areas, changes in rainfall patterns, an increase in the number of dry days and a longer duration of heat waves, a study showed on Monday . the National Institute for Space Research (Inpe) on the impacts of climate change in the country.

The study compares what happened to the country’s climate in the periods from 1991 to 2000, from 2001 to 2010 and from 2011 to 2022 compared to the reference period from 1961 to 1990.

In the Northeast region, the analysis shows that the average maximum temperature has increased gradually and has already increased by 1.5°C compared to the period from 1961 to 1990. At that time, the average was 30.7°C and is gradually increased up to 31.2°C. C in 1991-2000; 31.6°C in 2001-2010; and 32.2°C in 2011-2020.

The data also shows a change in the precipitation regime, with a decline in average precipitation in the Northeast, Southeast and Central-West at rates between 10% and 40%. The average rainfall volume dropped from 1,210 mm between 1961 and 1990 to 1,030 mm between 2011 and 2020.

The number of consecutive dry days has also increased, going from an average of 80-85 days per year to around 100 days in these regions.

In contrast, the amount of rainfall increased in the Southern Region, southern São Paulo and Mato Grosso do Sul, where average rainfall increased from 1,500 mm to 1,660 mm between 2011 and 2020.

In the context of yet another heat wave the country is experiencing this week, the study shows that these temperature extremes have been more frequent in recent years.

Between 1961 and 1990, heat waves lasted an average of seven days, but the duration increased rapidly. Between 1991 and 2000 the average duration was already 20 days; in the following period it rose to 40 days and, in the last decade analyzed, it reached 52 days.

The exceptions to these heat waves are precisely the regions most affected by the rains: the south of the country and the south of the states of Sao Paulo and Mato Grosso.

“The latest report from the IPCC (United Nations Intergovernmental Panel on Climate Change) highlighted that climate change is affecting different regions of the world in different ways,” INPE researcher Lincoln Alves said in a note released by the Ministry. , coordinator of the study. of Science and Technology.

“Our analyzes clearly reveal that Brazil is already experiencing these transformations, highlighted by the increase in the frequency and intensity of extreme weather events in several regions since 1961 and will worsen in the coming decades in proportion to global warming,” he added.

In recent days, Brazil has experienced another extreme heat wave, with temperatures breaking records in the southeastern and central-western states. Sao Paulo recorded a heat of 37.1ºC, the highest temperature recorded in a November month since measurements began. The same happened in Belo Horizonte, which reached 36.1ºC.

Source: Terra

Rose

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