The increasing thirst of the atmosphere

You don’t like the drought? Ok have a flood.

Photographer John Sirlin was in a canyon in the northeast part of Death Valley National Park late Thursday to shoot lightning in an expected thunderstorm.

Then the lightning petered out and the storm became a nonstop torrential downpour that lasted for hours, bringing near-record rainfall to one of the hottest, driest places on Earth.

Which isn’t what you want in drought conditions. You want slow steady non-torrential rain that has time to soak in, not a blast that washes away all the topsoil.

More analysis will be needed to determine whether climate change helped drive the storm’s intensity. But its extreme nature is consistent with what can be expected as global temperatures rise, experts said, drawing parallels with the historic flooding that damaged Yellowstone National Park in June.

You can have drought, or you can have a firehose. Nothing in between. Sorry!

Death Valley has averaged about 1.96 inches of precipitation per year since record keeping began in 1911, according to the Western Regional Climate Center. Nearly 75% of that amount fell in the space of a few hours on Friday.

Every single road in the park was damaged.

Now that Earth has warmed 1 degree Celsius above preindustrial levels, the odds are elevated that when factors known to produce intense storms do align, their effects will be even more extreme, Diffenbaugh said.

“What we’re seeing with climate change consistently is that when the conditions that are well understood to produce intense precipitation do come together, the fact that there’s more moisture in the atmosphere as a result of long-term warming means that those conditions are primed to produce more intense precipitation,” he said.

Although it can seem counterintuitive, he said, the same dynamic — often described as the increasing thirst of the atmosphere — is also contributing to the historic drought, more intense, frequent heat waves and increasingly extreme wildfire behavior that have beset the western United States.

Whatever it is will be bad.

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