David Keith Profile picture
Apr 11, 2023 7 tweets 2 min read Read on X
1/6 I am thrilled to announce that I have moved to @UChicago to lead a new initiative on Climate Systems Engineering. See news story. This thread addresses some obvious questions.

news.uchicago.edu/story/david-ke… Image
2/6 Q1-Why does this matter? The UChicago initiative is distinct in that it started with a wide-ranging faculty consultative process that led to a strategic choice by university leadership to pursue research in this area.
3/6 Efforts at other institutions have been driven bottom-up by a faculty member who advocated for research on this topic, often against resistance. The launch of the UChicago initiative thus serves as yet another mark of how work on solar geoengineering is maturing.
4/6 Q2-What is Climate Systems Engineering? It's the intersection of Climate Systems Science and Systems Engineering. Participants will decide the mix of topics as the initiative matures.
5/6 Initial foci include solar geoengineering; aspects of carbon removal such as ocean alkalinity that, like SRM, demand a broad understanding of earth system science; and local interventions to reduce glacial melting.
6/6 Q3-What about Harvard? I am very proud of what we built. A diverse group of faculty across the university are now keen on SRM research. Harvard's Solar Geoengineering Research Program has $$$. My hope & expectation is that it thrives as part of the Salata Insitute.

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More from @DKeithClimate

Dec 24, 2024
Catch Benedict Cumberbatch's magical reading of Kurt Vonnegut's letter to the future


1/4
1. Reduce and stabilize your population.
2. Stop poisoning the air, the water, and the topsoil.
3. Stop preparing for war and start dealing with your real problems.

2/4
4. Teach your kids, and yourselves, too, while you’re at it, how to inhabit a small planet without helping to kill it.
5. Stop thinking science can fix anything if you give it a trillion dollars.

3/4
Read 4 tweets
Sep 23, 2024
Opportunity for Postdoctoral Researchers at the Climate Systems Engineering initiative at UChicago!

$90k/year salary + $10k/year research funding + research autonomy

Work with a mentor from a discipline as part of our growing community.

Please forward to your networks. Image
Securing a faculty mentor in advance is strongly preferred, and applicants are encouraged to reach out early to engage a mentor.

Some faculty have posted research statements: .

List not restrictive: you may contact faculty who are not on this list.climateengineering.uchicago.edu/csei-postdocto…
See 1-page flyer: bit.ly/47E0vqV

Program website: climateengineering.uchicago.edu/csei-postdocto…

N.B., I don't expect to be the primary mentor for any of these postdocs, but I am eager to work with them.

climateengineering.uchicago.edu
Read 4 tweets
Jul 19, 2024
Biomass energy + CCS = BECCS

BECCS + Integrated Assessment Models + 1.5 assumptions = the trigger that ignited the Carbon Removal boom.

Sharp long-form reporting from Ramin Skibba @raminskibba.


1/5undark.org/2024/07/17/bur…
@raminskibba Ramin's story opens with Graphyte (a startup) burying bio-carbon bricks.

Burying biomass is about the same as how low-grade coal forms naturally.

About two decades ago @KenCaldeira asked me, 'Why make a negative coal mine when we are still operating positive coal mines?'.
2/5
@raminskibba @KenCaldeira Ken's Q was part of a sharp debate from the early days of BECCS

Our answer in 2002? It depends...



3/5 davidkeith.earth/wp-content/upl…
Image
Read 6 tweets
Dec 28, 2022
1/ Why not commercialize solar geoengineering?

Motivated by silly commercial stuff that bubbled up this year, this thread provides a few reasons why commercializing solar geoengineering is a terrible idea.

Bouquets, brickbats, or additional arguments most welcome.
2/ An example that just got some ink. More examples near end-of-thread. technologyreview.com/2022/12/24/106…
3/ Reason 1: SRM's defining challenge is trust. There is no reasonable doubt that commercial-off-the-shelf tech could be adapted to cool the planet at a tiny cost using strat aerosols. Science suggests benefits could be far larger than risks.
Read 17 tweets
Nov 21, 2022
1/ Two pivotal illustrations of climate progress.

One: The flow of money to decarbonization has tripled to 0.75% of GDP in a decade

Two: Per capita emissions have peaked and total emissions will peak soon
2/ One: Decarbonization requires replacing the high-emissions energy infrastructure with a zero-emissions alternative.

flow of $$ --> clean infrastructure is a stronger measure of climate action than the flow of pledges --> mediasphere.
3/ Over a decade the flow of $$$ into decarbonization has tripled reaching 3/4 $trillion a year -- 0.75% of global GDP

data: @BloombergNEF about.bnef.com/blog/global-in…
Read 5 tweets
Aug 17, 2022
1/ Is every $ on CCS a waste? Enough folks asked me about this to tempt me to tweet.

Fair cop that CCS 1.0--CCS as a path to low carbon electricity – was overhyped by folks including me.

nytimes.com/2022/08/16/opi…
2/ Why were we wrong? Solar & wind got cheap (👏) fast and CCS cost were high.

But Harvey & House look only backward. Yet if you issued bids to procure large volumes of low-carbon cement today CCS would be the cheapest way to supply it. Similar for steel and some chemicals.
3/ Harvey & House don't examine intermittency and deep decarb. NG with CCS (looking at you NetPower) may play a role as electricity decarbonization proceeds and the challenge of intermittency get larger. Or maybe nukes or batteries win. But more options are good.
Read 6 tweets

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