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Michael E. Mann Profile picture
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27 Dec, 3 tweets, 3 min read
" 'Deep Adaptation' made people confront the end of the world from climate change...Does it matter if it's not correct?" asks the @NYTimes (nytimes.com/2020/12/26/sty…).

YES it matters. Read The #NewClimateWar to find out why: publicaffairsbooks.com/titles/michael…
The #NewClimateWar (publicaffairsbooks.com/titles/michael…) discusses the problems with "Deep Adaptation" (and soft doomism) at length. A snippet:
Since "Deep Adaptation" is back in the news, a short excerpt from The #NewClimateWar (publicaffairsbooks.com/titles/michael…) on what makes doomism (and its more respectable cousin "soft doomism") so pernicious:

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More from @MichaelEMann

Michael E. Mann Profile picture
7 Nov
Congratulations #PresidentBiden!
Now let's get to work.
We must reassert the climate leadership that was lost under Trump.
A lot of us stand ready to help!
Here's my full statement below.
Let's hit the ground running in January! 🙂
#NewClimateWar
facebook.com/MichaelMannSci…
Congratulations to President Elect @JoeBiden!
And congratulations to US for having used the power of our vote to create an opportunity for meaningful progress on climate going forward (thread)
Biden's victory ushers in a new era of global cooperation, allowing us to begin to repair the damage that was done by Donald Trump over the past four years both to domestic climate efforts and to our reputation on the world stage.
Read 12 tweets
Michael E. Mann Profile picture
19 Aug
Short thread on what it was like to be a climate scientist a decade ago for some, courtesy of excerpts from "The Hockey Climate Wars" (amazon.com/Hockey-Stick-C…)
1. Being targeted for assault by national white supremacist groups for being part of a purported Jewish climate cabal.
2. Actionable death threats against you and your family. FBI testing your office for anthrax after receipt of a powder-containing envelope.
3. Investigations by Congressional Republican Committee Chairs aimed at intimidating you and discrediting you and your research.
Read 11 tweets
Michael E. Mann Profile picture
11 Nov 19
One of the most enduring climate change denial talking points is that there is no trend in hurricane-related damages.

This claim is based almost entirely on the claims of one researcher, Roger Pielke Jr. See e.g. @SkepticScience: skepticalscience.com/climate-change…
(thread)
@skepticscience As I have noted several times before (See: ), Pielke’s claims are based on (1) a dubious normalization procedure that divides damages by global domestic product (GDP), a quantity that increases dramatically over time and...
@skepticscience (2) use of a simple least squares trend which is problematic for data such as these with a skew distribution. These choices suppress damage trends
Read 8 tweets
Michael E. Mann Profile picture
8 Nov 19
"It's not an uncommon view among scientists that we potentially compromise our objectivity if we choose to wade into policy matters or societal implications of our work. And it would be problematic if our views on policy somehow influenced the way we went about doing our science"
"But there is nothing inappropriate at all about drawing on our scientific knowledge to speak out about the very real implications of our research."
"If scientists choose not to engage in the public debate, we leave a vacuum that will be filled by those whose agenda is one of short-term self-interest..."
Read 8 tweets
Michael E. Mann Profile picture
14 Sep 19
Much is being made of a graph depicting changes in methane concentrations at Barrow Alaska and a recent supposed spike over the last year.

Let's catch our breath for a moment and put this in proper scientific context.
1/n
 (thread)
The 2019 measurements are consistent with the trend over the past decade. Outliers (i.e. isolated data points that lie well above the average) are seen throughout the record. Do not over-interpret them.
2/n
We see in the above graph a slowdown during the 1990s. This is well studied and understood. It has to do with a temporary reduction in wetlands methane emissions during that time: sciencedaily.com/releases/2006/…
3/n
Read 6 tweets
Michael E. Mann Profile picture
7 Sep 19
I’m troubled by some very misleading statements and claims made at this public-facing @NOAA website on “Global Warming and Hurricanes”:
gfdl.noaa.gov/global-warming…
(thread)
@NOAA Among the problems are indefensible claims about the supposed non-significance of trends in hurricane activity. This includes tropical cyclone and hurricane counts and the proportion of storms that reach the highest (cat 4 and 5) categories.
@NOAA These claims are based on fitting linear trends to the associated time series.

More than a decade ago, Kerry Emanuel and I showed (meteo.psu.edu/holocene/publi…) that this approach is problematic.
Read 24 tweets

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