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Of Brazil, the World Cup and Climate Change

When the Brazil and Croatia national sides kick off the World Cup on Thursday, the players on the field won't be the only new things since the last time Brazil hosted the World Cup in 1950. Cleats, the stadiums and even the humble soccer ball itself have changed. But even more important than soccer equipment, average temperatures in Brazil for June and July, when the tournament is played, have also changed. And that change has trended upward, just as it has worldwide.

Data from CRU 3.1 dataset showing the change in June-July average temperature anomalies in Brazil for 1950-2009.
Data source: International Research Institute for Climate and Society Data Library

June-July average temperatures have risen at a rate of 0.3°F per decade since 1950 in Brazil. Much of that rise has come since the 1970s, which is in line with the overall global trend. The analysis is based on data showing temperature departures from normal processed using the International Research Institute for Climate and Society's Data Library. That same data also show yearly temperatures have also risen roughly 1.4°F since 1950.

Brazil’s winter, which runs from June-August since it's below the equator, is tied with Brazilian summer for the country’s fastest-warming season looking at the period of 1960-2010 according to a UK Met Office report. The eastern third and northwest of the country are where much of the warming is occurring. It’s also worth noting that the Amazon, which covers much of Brazil’s center, is data-sparse and so trends are harder to detect and less certain.

While there’s a notable upward trend in temperatures, there's also plenty of year-to-year variability. And if you're handing out red cards for this influence, then look no further than El Niño and its tropical opposite, La Niña. The eastern part of the country generally sees warmer temperatures when El Niño occurs, particularly from June-August. If El Niño is in place from December-February, the northeast also tends to be dryer. La Niña has the opposite effect, increasing the odds of cooler weather in the east and wetter weather in the northeast.

If history is any indication, the World Cup isn't likely to have lasting economic benefits for Brazil, but with an El Niño on the horizon later this summer, it’s possible that temperatures could ratchet up. And if it persists through the end of the year, agriculture in the Northeast, which is already suffering through a severe drought, could be further impacted.

The increase in Brazil's winter and yearly average temperature is in line with the global trends fueled in large part by human greenhouse gas emissions. That might have you wondering what the future could hold should Brazil host the Cup on the 100-year anniversary of its first hosting gig in 1950. Climate projections from the latest Intergovernmental Panel on Climate Change show temperatures across much of Brazil may rise more than 5°F by mid-century unless human greenhouse gas emissions are curbed.

In other words, if you think the English team is going to suffer because of the hot weather now, just wait until the next go round.


By Dave (Basking Ridge, NJ 07920)
on June 11th, 2014

So the topic is climate change and the World Cup. So here’s something to warm up a bunch of American football fans.

I know that the unspoken PC here does not allow soccer to be called football. But I think that when talking about an international event like the World Cup, it is odd not to bend a little and refer to the game by its international common name - football - instead of the everyday American preferred soccer. Soccer is association football. There are different types of football with different rules. Association football (aka soccer / also the most popular sport in the world) was originally played according to FA (London) rules way back. Soccer is a colloquial reduction of the first word - association. That’s where the word comes from. It means a type of football. FIFA stands for international federation of the football association. I grew up in London, England playing football (soccer). Not often, but sometimes we used the word soccer instead of football when talking about it amongst ourselves. But we never ever once called the ball a soccer ball. It’s a football. You kick it with your feet.

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By Mark
on June 21st, 2014

And the off topic comment award goes to…...

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By the jade pond (Milwaukee,WI 53201)
on July 10th, 2014

Actually the topic is a great example of how provincial the USA is about world issues.

A football is round to most of the world and rapid climate change is realized by most of the world.

It is the USA that is out of step.

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