This not-so-positive prediction will focus on South American geopolitics as it relates to climate change between the years2040 and 2050. As you read on, you’ll see a South America that’s struggling to combat drought while trying to prevent both resource shortages and a widespread return to the military dictatorships of the 1960s to 90s.
But before we begin, let’s be clear on a few things. This snapshot—this geopolitical future of South America—wasn’t pulled out of thin air. Everything you’re about to read is based on the work of publicly available government forecasts from both the United States and United Kingdom, a series of private and government affiliated think tanks, as well as the work of journalists like Gwynne Dyer, a leading writer in this field. Links to most of the sources used are listed at the end.
On top of that, this snapshot is also based on the following assumptions:
Government investments to seriously and sizably limit or reverse climate change will remain moderate to practically non-existent.
By 2040 to 2050, climate change will have progressed to a stage where greenhouse gas (GHG) concentrations in our atmosphere exceed 450 parts per million. In this scenario, the world is now at least two degrees Celsius warmer, probably more.
You read our intro to climate change and the not-so-nice effects it‘ll have on our drinking water, agriculture, coastal cities, and plant and animal species, if no action is taken against it.
Now, let’s get right into it.
South America and the return of the strongman
By the 2040s, climate change will cause extreme declines in annual rainfall across South America due to the expansion of the Hadley cells. The countries most affected by these ongoing droughts will include all of Central America, from Guatemala right through Panama, and also across the South America’s northern tip—from Columbia to French Guiana. Chile, due to its mountainous geography, may also experience extreme droughts.
The countries who will fare the best (relatively speaking) in terms of rainfall will include Ecuador, the southern half of Columbia, Paraguay, Uruguay, and Argentina. Brazil sits in the middle, since its massive territory will contain larger rainfall fluctuations.
Some of the westernmost countries like Columbia, Peru, and Chile, will still enjoy a wealth of freshwater reserves, but even those reserves will start seeing declines as their tributaries begin to dry out. Why? Because lower rainfall will eventually result in lower freshwater levels of the Orinoco and Amazon River systems, which feed much of the freshwater deposits in the continent. These declines will impact two equally vital parts of the South American economies: food and energy.
With climate change warming the Earth up to two to four degrees Celsius by the late 2040s, many parts of South America simply won’t have enough rainfall and water to grow enough food for its population. On top of that, some staple crops simply won’t grow at these elevated temperatures.
For example, studies run by the University of Reading found that two of the most widely grown varieties of rice, lowland indica and upland japonica, were vulnerable to higher temperatures. Specifically, if temperatures exceeded 35 degrees Celsius during their flowering stage, the plants would become sterile, offering little to no grains. Many tropical countries where rice is the main staple food already lie on the very edge of this Goldilocks temperature zone, so any further warming could mean disaster. This same danger is present for many South American staple crops like beans, corn, cassava and coffee.
William Cline, senior fellow, Peterson Institute for International Economics, estimates that the climate warming South America may experience could lead to a decrease in farm yields by as much as 20 to 25 per cent.
It may surprise people to know that many South American countries are leaders in green energy. Brazil, for example, has one of the greenest energy production mixes in the world, generating over 75 per cent of its power from hydroelectric plants. But as the region begins to face increasing and permanent droughts, there’s the potential for devastating power disruptions (both brownouts and blackouts) to become a common issue throughout the year. The drought would also hurt the country’s sugar cane yields, which will in turn increase the price of ethanol for the country’s flex-fuel car fleet (assuming the country doesn’t switch to electric vehicles by then).
Rise of autocrats
The shortage of water, food, and energy across South America is a recipe for civil unrest and revolution. Depending on who’s in power, some poorer governments may fall into a failed state status, while others might use their militaries to take emergency command and maintain order through a permanent martial law. Countries that can afford the aforementioned resources (particularly those whose climates aren’t too adversely affected, namely Brazil and Argentina) will probably hold on to some semblance of democracy, while actively defending their borders and resources from the more desperate and militarized northern neighbors.
On the flip side, this fall to authoritarianism may be avoided depending on how integrated the South American nations become through institutions like UNASUR. Should they agree to collaborative sharing of continental water resources, as well as shared investment in a new continent-wide network of integrated transportation and renewable energy infrastructure, South American states may successfully collaborate through this troubled period.
Reasons for hope
First, remember that what you’ve just read is only a prediction, not a fact. It’s a prediction that’s written in 2015. A lot can and will happen between now and the 2040s to address the effects of climate change (many of which will be outlined in the series conclusion). And most important, the predictions outlined above are largely preventable using today’s technology and today’s generation.
To learn more about how climate change may affect other regions of the world or to learn about what can be done to slow and eventually reverse climate change, read our series on climate change via the links below:
WWIII Climate Wars series links
WWIII CLIMATE WARS: NARRATIVES
Southeast Asia, Drowning in your Past: WWIII Climate Wars P9
South America, Revolution: WWIII Climate Wars P11