Our Warmer, Wetter, Wilder World

My friend the geophysicist emailed the other day to tell me his house in Connecticut was still snowed in. “The main hypotheses for why we have so much snow,” he explained, “involve heat coming out of the now-open Arctic ocean in early winter. Once the ice cap freezes over temporarily, the wild weather calms down.”

In other words, it’s caused by global warming. Not global warming next year. Not global warming 50 years from now. Global warming today. And according to a new study published in Nature, the entire continent of North America is affected:

“Human influence on the climate system has the effect of intensifying precipitation extremes,” said Francis Zwiers, a climate researcher at Environment Canada in Toronto and lead researcher on the first study….The study found that observed increase in deluges “cannot be explained by natural internal fluctuations of the climate system alone,” said Zwiers. In other words, only the addition of greenhouse gases to the atmosphere explains why the United States and Canada have experienced a dramatic increase in heavy downpours.

….The explanation is simple physics: Warmer air holds more water vapor. That means when rainfall gets triggered, the air contributing to the storm is holding more water than it did in the cooler pre-industrial world.

And it’s not just North America. Another new study looked at the epic floods in England and Wales in 2000 and concluded that they likely resulted from a warmer world:

In nine out of ten cases our model results indicate that twentieth-century anthropogenic greenhouse gas emissions increased the risk of floods occurring in England and Wales in autumn 2000 by more than 20%, and in two out of three cases by more than 90%.

And the even scarier part? These studies only go through the year 2000, so they miss the entire last decade, which was the warmest on record. And needless to say, England and North America are far from being the areas worst affected by climate change. What we’re seeing here is just a small taste of what’s to come in the future and in other parts of the globe. Buckle up.

Front page illustration by Celine Nadeau.

We've never been very good at being conservative.

And usually, that serves us well in doing the ambitious, hard-hitting journalism that you turn to Mother Jones for. But it also means we can't afford to come up short when it comes to scratching together the funds it takes to keep our team firing on all cylinders, and the truth is, we finished our budgeting cycle on June 30 about $100,000 short of our online goal.

This is no time to come up short. It's time to fight like hell, as our namesake would tell us to do, for a democracy where minority rule cannot impose an extreme agenda, where facts matter, and where accountability has a chance at the polls and in the press. If you value our reporting and you can right now, please help us dig out of the $100,000 hole we're starting our new budgeting cycle in with an always-needed and always-appreciated donation today.

payment methods

We've never been very good at being conservative.

And usually, that serves us well in doing the ambitious, hard-hitting journalism that you turn to Mother Jones for. But it also means we can't afford to come up short when it comes to scratching together the funds it takes to keep our team firing on all cylinders, and the truth is, we finished our budgeting cycle on June 30 about $100,000 short of our online goal.

This is no time to come up short. It's time to fight like hell, as our namesake would tell us to do, for a democracy where minority rule cannot impose an extreme agenda, where facts matter, and where accountability has a chance at the polls and in the press. If you value our reporting and you can right now, please help us dig out of the $100,000 hole we're starting our new budgeting cycle in with an always-needed and always-appreciated donation today.

payment methods

We Recommend

Latest

Sign up for our free newsletter

Subscribe to the Mother Jones Daily to have our top stories delivered directly to your inbox.

Get our award-winning magazine

Save big on a full year of investigations, ideas, and insights.

Subscribe

Support our journalism

Help Mother Jones' reporters dig deep with a tax-deductible donation.

Donate