(credit: USGS)

Droughts in the coming decades could be longer than projected by current climate models, a new study published Wednesday in Nature warns.

The international team of scientists examined potential biases that could skew climate models used to make drought projections under Intergovernmental Panel on Climate Change midrange and high emissions scenarios. The researchers corrected for the bias by calibrating those models with observations of the longest annual dry spells between 1998 and 2018.

By the end of this century, they found that the average longest periods of drought could be 10 days longer than previously projected. Trouble spots included North America, Southern Africa, and Madagascar, where the newly calibrated models showed that the increase in the longest annual dry spell could be about twice what the older models predicted.

Enlarge / Power lines are cast in silhouette as the Creek Fire creeps up on on the Shaver Springs community off of Tollhouse Road on Tuesday, Sept. 8, 2020, in Auberry, California. (credit: Kent Nishimura / Los Angeles Times)

This article originally appeared on Inside Climate News, a nonprofit, independent news organization that covers climate, energy and the environment. It is republished with permission. Sign up for their newsletter here. 

Most people are “very” or “extremely” concerned about the state of the natural world, a new global public opinion survey shows.

Roughly 70 percent of 22,000 people polled online earlier this year agreed that human activities were pushing the Earth past “tipping points,” thresholds beyond which nature cannot recover, like loss of the Amazon rainforest or collapse of the Atlantic Ocean’s currents. The same number of respondents said the world needs to reduce carbon emissions within the next decade.