Climate Change, a Factor in Texas Floods, Largely Ignored

https://www.texastribune.org/2015/05/27/climate-change-factor-floods-largely-ignored/

by Neena Satija and Jim Malewitz May 27, 2015
Patrick Svitek contributed reporting.

Climate change is taking a toll on Texas, and the devastating floods that have killed at least 15 people and left 12 others missing across the state are some of the best evidence yet of that phenomenon, state climatologist John Nielsen-Gammon said in an interview Wednesday.

"We have observed an increase of heavy rain events, at least in the South-Central United States, including Texas," said Nielsen-Gammon, who was appointed by former Gov. George W. Bush in 2000. "And it's consistent with what we would expect from climate change."

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Climate Change, a Factor in Texas Floods, Largely Ignored

by Neena Satija and Jim Malewitz May 27, 2015 39Comments

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A flood-damaged house in Wimberley, May 25, 2015.
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photo by: Jorge Sanhueza-Lyon/KUT News
A flood-damaged house in Wimberley, May 25, 2015.

Climate change is taking a toll on Texas, and the devastating floods that have killed at least 15 people and left 12 others missing across the state are some of the best evidence yet of that phenomenon, state climatologist John Nielsen-Gammon said in an interview Wednesday.

"We have observed an increase of heavy rain events, at least in the South-Central United States, including Texas," said Nielsen-Gammon, who was appointed by former Gov. George W. Bush in 2000. "And it's consistent with what we would expect from climate change."

But the state's Republican leaders are deeply skeptical of the scientific consensus that human activity is changing the climate, with top environmental regulators in Texas questioning whether the planet is warming at all. And attempts by Democratic lawmakers during the 2015 legislative session to discuss the issue have come up short.

"In part, it's ideologically driven and intellectually lazy," said state Rep. Rafael Anchia, D-Dallas, who earlier this year invited national security experts to the state Capitol to testify at a hearing on the risks of climate change. “My question is: What are people scared of? Are they scared of the truth?"

Asked about the role of climate change in the floods, U.S. Sen. Ted Cruz declined to weigh in Wednesday. "At a time of tragedy, I think it's wrong to try to politicize a natural disaster," the Republican presidential candidate said during a news conference in San Marcos after surveying damage.


Extreme weather events, and more of them, are among the most agreed-upon effects of global warming in all the scientific literature on the subject, said Nielsen-Gammon, who is also a professor at Texas A&M University. Part of the explanation is that ocean temperatures are rising, bringing more moist air into the state that can create storm systems. In the past century, precipitation in Texas is up 7 to 10 percent, and the frequency of two-day heavy rainfall spells has nearly doubled.

The scientific consensus is much stronger on this point than on whether climate change can directly cause droughts. Nielsen-Gammon's own research has shown that warmer temperatures due to global warming did make the drought in Texas measurably worse than it otherwise would have been.

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tags: extreme weather