Twitter | Search | |
Katharine Hayhoe
The Fourth US National Climate Assessment was released on Friday. Since then, a number of politicians + pundits have made statements about it that are not accurate. As an author, I'm here to set the record straight. Here we go! (thread)
This report is an authoritative assessment of the science of climate change, with a focus on the United States. It represents the second of two volumes of the Fourth National Climate Assessment,...
globalchange.gov globalchange.gov @usgcrp
Reply Retweet Like More
Katharine Hayhoe Nov 27
Replying to @KHayhoe
... when your phone goes dead right at the first tweet ...
Reply Retweet Like
Dan Wade Nov 27
Replying to @KHayhoe
You'd think you "billionaire scientists" could afford nicer phones
Reply Retweet Like
Katharine Hayhoe Nov 27
Replying to @KHayhoe
First, a WH spokesperson said the report was based on the “most extreme” scenario. No: the report considered a very broad range of scenarios, from one where carbon emissions go negative to one where they continue to grow. Source:
Reply Retweet Like
Katharine Hayhoe Nov 27
Replying to @KHayhoe
Moreover, the scenarios chapter in Vol 1 discussed the scenarios in detail, and it concludes that “the observed increase in global carbon emissions over the past 15–20 years has been consistent with higher scenarios (very high confidence).” source:
Reply Retweet Like
Nubby Snug Nov 27
Replying to @KHayhoe
I appreciate your efforts. This type of analysis is needed. Unfortunately people that don't believe in this won't change their mind with more facts; they'll have to feel it to believe and by then I think it'll be too late. It'll be up to our grandkids to pick up the pieces.
Reply Retweet Like
Katharine Hayhoe Nov 27
Replying to @KHayhoe
Throughout the regional and sectoral chapter, the report makes every effort to discuss possible outcomes of multiple scenarios. On the risks to coastal infrastructure, for example, the Southeast chapter says this:
Reply Retweet Like
Katharine Hayhoe Nov 27
Replying to @KHayhoe
The WH spokesperson also said that future reports would be “transparent” - but this report was publicly reviewed. Authors were required to respond to each comment individually, and both the commments + our responses are available for anyone to read. Plus ...
Reply Retweet Like
Katharine Hayhoe Nov 27
Replying to @KHayhoe
Each key message is fully documented by a “traceable account” that contains full citations, sources, references, and documentation supporting that key message. In many cases, the traceable account section is as long as the chapter itself (!) How much more transparent can you get?
Reply Retweet Like
Tara Nov 27
Replying to @KHayhoe
A RCP 2.6 is a negative carbon scenario by 2050-2100 right? Just wanna be sure I read the graph right!
Reply Retweet Like
Katharine Hayhoe Nov 27
Replying to @KHayhoe
Then, Santorum claimed us authors were “driven by money”. After I picked myself up off the floor laughing, since we received $0 for writing the report, I invited him to watch this entertaining Global Weirding episode. I don’t think he did; but you should!
Reply Retweet Like
Katharine Hayhoe Nov 27
Replying to @KHayhoe
Next, Delay claimed that the report was “nothing more than a rehash of age-old 10- to 20-year assumptions made by scientists that get paid to further the politics of global warming.” In fact, the report includes the latest literature right up to the cut-off date, ...
Reply Retweet Like
Katharine Hayhoe Nov 27
Replying to @KHayhoe
...including the latest attribution studies for Harvey that quantify how human influence made the storm ~3x more likely and increased its rainfall “by at least 15% with a best estimate of 38%”. That’s pretty recent! Read more:
Reply Retweet Like
Katharine Hayhoe Nov 27
Replying to @KHayhoe
Finally, the president then said that he “didn’t believe” the report. But climate science isn’t a religion: it’s real, whether we believe in it or not. If our decisions are not based in reality, we are the ones who will suffer the consequences.
Reply Retweet Like
Katharine Hayhoe Nov 27
Replying to @KHayhoe
When it comes to a changing climate, the bottom line is this: It’s real. It’s us. Scientists agree. The impacts are already here and now. But by acting now we can still avoid the most serious and even dangerous impacts. Our future is in our hands.
Reply Retweet Like
Katharine Hayhoe Nov 27
Replying to @KHayhoe
If you’re wondering, I’m just one person, what can I do about it? Start here:
Reply Retweet Like
Katharine Hayhoe Nov 27
Replying to @KHayhoe
If you’re asking, isn’t it too late to fix this thing? Watch this:
Reply Retweet Like
Katharine Hayhoe Nov 27
Replying to @KHayhoe
And if you, like the president of the United States, are tempted to say, “it’s cold outside, so much for global warming!”, here is an episode just for you:
Reply Retweet Like
Katharine Hayhoe Nov 27
Replying to @brunetteinnb
Correct!
Reply Retweet Like
Katharine Hayhoe Nov 27
Replying to @15Deloreans
I rock my iPhone 6 I don’t know what you’re talking about 😜
Reply Retweet Like