Mark Zelinka

We just published a paper on climate sensitivity in #CMIP6 models: agupubs.onlinelibrary.wiley.com/doi/abs/10.102… Figured it was time for my first twitter thread!

Sobering. foreignaffairs.com/united-states/…

Looking for a postdoc position, or know someone who is? Interested in cloud feedbacks? @mzelinka and I are recruiting for a project focused on high cloud feedbacks funded through the DOE RGMA program. Feel free to contact us for more information. Please share! jobs.virginia.edu/us/en/job/UOVU…

Thanks so much for having me!

@PauloCeppi @LeverhulmeTrust @ImperialSci @ImperialPhysics @Grantham_IC Awesome Paulo! Well deserved.

@rupephoto @coxypm @AnuRuhanen @coxypm Can I apply for this position? :-)

@rupephoto @coxypm @AnuRuhanen This doesn't fully answer the question posed by @coxypm since some of the cloud changes are feedback, some are due to aerosol-cloud interactions, and some are not forced at all. So it is definitely a worthwhile open research question.

Declining planetary albedo is contributing hugely to the acceleration of global warming, but why is the planet getting darker? This new PhD studentship, with Mark Williamson and me, sets out to answer that vital question. Please retweet. exeter.ac.uk/study/funding/…

Livermore broke the daily maximum temperature record of 109° set in 1905. The new record for today, July 6th is now 111°.

#MDPI strikes again

@AndrewIWilliams @cristiproist @PauloCeppi @Tim_AndrewsUK @YueDong35680721 @PaulJDurack @markjwebb We are also considering replacements for this experiment, if someone comes up with a good one and documents it in a manuscript. GFMIP may have this covered already...?

@AndrewIWilliams @cristiproist @PauloCeppi @Tim_AndrewsUK @YueDong35680721 @PaulJDurack "We" being @PauloCeppi, @markjwebb, Alejandro Bodas-Salcedo, and myself

Hey folks, does anyone know/have a reference which explains the design of the AMIP-future4K experiment in CMIP6? Basic questions like, "Where did they get the pattern from?" are evading my Google searches... Thanks!

@Tim_AndrewsUK @D_McCoy_Atmos @pochedley @PauloCeppi @doescience @LLnL

@mzelinka @D_McCoy_Atmos @pochedley @PauloCeppi @doescience @LLnL Haha. You missed a key qualifier though - think I wrote "*almost* impenetrable" ;-) Maybe the world is ready for the original Fig 3 now? It was a great paper though, bravo.

Shout out to my co-authors Tim Myers, @D_McCoy_Atmos, @pochedley, Peter Caldwell, @PauloCeppi, Steve Klein, and Karl Taylor, without whom this would not have been possible. And of course to the RGMA program at @doescience for funding this work thru PCMDI at @LLNL

@Tim_AndrewsUK @D_McCoy_Atmos @pochedley @PauloCeppi @doescience @LLnL That is certainly true. @Tim_AndrewsUK stopped us from presenting the original Figure 3 that was "impenetrable" in his words and would have doomed the paper to obscurity.

@mzelinka @D_McCoy_Atmos @pochedley @PauloCeppi @doescience @LLnL Top notch reviewers too... ;-)

Thanks so much for highlighting our study!

@cristiproist @hausfath @benmsanderson Agreed, though my recollection was that it didn't make much difference in practice when we Haus-filtered by ECS rather than TCR

@cristiproist @hausfath @benmsanderson One would think the link between ECS and warming around the time of doubling in a 1%/yr compounding CO2 run would be tighter than between ECS and transient warming during the recent historical period, no?

@cristiproist @hausfath @benmsanderson I'm confused. Sherwood, Webb, et al (2020) also derived a posterior TCR range that is essentially identical to IPCC's [1.5 to 2.2K, see Table 11] but which did not rely on observed warming rates to arrive at that constraint.

How it feels to be scrolling Twitter these days: