For the second time this month, a person who misrepresents, distorts, and disagrees with climate science is being placed in a science position at NOAA. (read next tweet for my take on what this might mean)
This follows this first appointment of "a critic of climate modeling used to predict future conditions [who] could play a significant role in shaping the next National Climate Assessment."…
The US NCA is, after the IPCC reports, one of the most comprehensive + thoroughly reviewed climate ass'ts in the world. It documents how climate change is affecting every region and sector of the U.S. and is required by law to be released every 4 yrs. NCA4 was released in 2018.
The last time a National Assessment was released in 2018, this was the response of the administration: to misrepresent it, question it, and dismiss it. In this thread I document and respond to many of the false statements that were made.
What will happen to NCA5? Given the news above, I am neither optimistic nor sanguine.
The last word on this thread comes from my fellow Texan climate scientist @AndrewDessler:

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More from @KHayhoe

9 Nov
The science carnage of the Trump administration continues, unchecked by the recent election.
Read 4 tweets
3 Nov
It amazes and saddens me how many people are willing to let some of the richest multinationals in the world off the hook when it comes to carbon emissions and blame themselves + other individuals instead. "We're the consumers" say the drug addicts, "so it must be our fault." Image
Guilt can be a powerful motivator of societal change, yes ... when those who feel that guilt have the power to effect change at the scale that would mitigate that guilt. When it comes to carbon emissions, tho, the fact is that we as individuals DON'T.
That is why, as @MichaelEMann explains so clearly and lucidly here, we need system-wide change.…
Read 7 tweets
2 Nov
Royal Dutch Shell is #6 on the list of 90 companies responsible for 2/3 of greenhouse gas emissions since the dawn of the industrial era. Their cumulative emissions equal those of the country of 🇨🇦.…
Yes, everyone must do their part - starting with the biggest emitters. That means you, @Shell.
Despite what the CEO of Shell claimed in 2019, eating food that's in season, avoiding fast fashion and recycling ISN'T GOING TO CUT IT when it comes to stabilizing climate change. Those actions will make no more than the tiniest of dents.…
Read 4 tweets
28 Oct
Press release from the White House Office of Science and Technology Policy claims science + tech highlights of Trump's first term include "ending the covid-19 pandemic" and "taking action to understand and protect the environment."…
The truth? The Trump administration has or is in the process of rolling back over 100 pieces of legislation that protect the "clean air, clean water, and resilient environment" the press release claims to have protected. Source:…
The Trump administration also deliberately misrepresented the findings of the National Climate Assessment and just this fall hired new appointees who explicitly reject the science to "consult" on the NCA process in the future.
Read 4 tweets
27 Oct
US DOE has blocked reports for more than 40 clean energy studies. “There are dozens of reports that can’t be published,” said Stephen Capanna, former director of strategic analysis who quit in frustration in April 2019. h/t @dan_kammen cc @SolomonG_R…
.. while claiming that energy efficiency - a powerhouse win-win solution which could reduce US carbon emissions a whopping 50% and save $700B - is all about making people's windows tiny (?!)…
... and that wind energy, which supplies 20% of Texas' electricity, is a bird killer. Well sure...but compared to fossil fuels, windows, and cats? It's quite literally microscopic; plus there's lots of cool new tech to reduce wind bird deaths further.…
Read 5 tweets
25 Oct
Mrs. Eunice Newton Foote (1819-1888) was a women's rights advocate & pioneering scientist. In 2020, @EarthSci_Info + @Roland_Jackson reanalyzed the data from her groundbreaking 1856 study to show you could estimate a climate sensitivity of 2-3C from it!…
Climate sensitivity is the equilibrium change in global mean temperature resulting from a doubling of CO2 relative to pre-industrial levels. It's usually represented as a probability distribution with a mean value around 2.4-4.7. Here is a recent review:…
Why don't we know the value for sure? Because we've never seen this much carbon going into the atmosphere this fast with these precise initial conditions. We are conducting a truly unprecedented experiment with our planet.…
Read 8 tweets

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