Rainfall Changes Linked To Human Activity

Fight disinformation: Sign up for the free Mother Jones Daily newsletter and follow the news that matters.


Greenhouse-gas emissions have made the Northern Hemisphere wetter &mdash and climate models appear to have underestimated the changes. Research from the Canadian Centre for Climate Modelling and Analysis, published in Nature, finds that human activity has made the weather wetter in a large slice of the Northern Hemisphere, while making the regions just south of the Equator wetter, and those just north of it drier. Agriculture and human health have already been affected. The proof that human activity has altered rainfall patterns was found in comparisons of observed changes with climate models. Specifically with observed rainfall during the twentieth century compared to rainfall predicted by 14 climate models. In the zone between 40 and 70 °N, which includes much of North America and most of Europe, rainfall increased by 62 millimeters per century between 1925 and 1999. The researchers estimate that between 50 and 85% of this increase can be attributed to human activity.

So how many British naysayers have been converted in these past wet weeks? JULIA WHITTY

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