Marcus C Sarofim
@marcusmarcusrc.bsky.social
Climate scientist, ex-EPA. Writing climate science & policy at The Saraph Report. Saraph, my name's root, means fire, which is appropriate for climate work. Interested in books, food, and contra dancing when not obsessing over carbon.
FYI: I recognize that truly horrible things are being done by my government in Minneapolis. Which is a sequel to the horrible things caused by the withdrawal of USAID, vaccine disinformation, January 6th, the dismantling of science, etc. But my bluesky will be mainly focused on climate for now.
January 25, 2026 at 10:04 PM
FYI: I recognize that truly horrible things are being done by my government in Minneapolis. Which is a sequel to the horrible things caused by the withdrawal of USAID, vaccine disinformation, January 6th, the dismantling of science, etc. But my bluesky will be mainly focused on climate for now.
Do any of my climate friends know where I can find the CH4 and N2O concentration data for the SRES scenarios in www.ipcc.ch/site/assets/...? I found CO2 and Temp data at www.ipcc-data.org/ancilliary/t... and www.ipcc-data.org/data/ar4_mul... respectively. Thank you.
www.ipcc.ch
January 25, 2026 at 10:00 PM
Do any of my climate friends know where I can find the CH4 and N2O concentration data for the SRES scenarios in www.ipcc.ch/site/assets/...? I found CO2 and Temp data at www.ipcc-data.org/ancilliary/t... and www.ipcc-data.org/data/ar4_mul... respectively. Thank you.
After 17 years, I left the EPA yesterday. I'm sad to leave my "unicorn job", but this admin won't let me work on climate change.
I'll be posting at thesaraphreport.substack.com
First up: the Endangerment Finding. I helped write it. I defended it. Now I'm watching them tear it down.
I'll be posting at thesaraphreport.substack.com
First up: the Endangerment Finding. I helped write it. I defended it. Now I'm watching them tear it down.
Marcus C Sarofim | Substack
Climate science and policy analysis from Marcus Sarofim: 17 years EPA, MIT PhD, JHU adjunct, key contributor to 2009 GHG Endangerment Finding. Saraph (my name's root) means "fire"—fitting for climate ...
thesaraphreport.substack.com
January 25, 2026 at 10:42 AM
After 17 years, I left the EPA yesterday. I'm sad to leave my "unicorn job", but this admin won't let me work on climate change.
I'll be posting at thesaraphreport.substack.com
First up: the Endangerment Finding. I helped write it. I defended it. Now I'm watching them tear it down.
I'll be posting at thesaraphreport.substack.com
First up: the Endangerment Finding. I helped write it. I defended it. Now I'm watching them tear it down.
Well, this is depressing: Trump Pulls Out of Global Climate Treaty www.nytimes.com/2026/01/07/c...
Trump Pulls Out of Global Climate Treaty
www.nytimes.com
January 8, 2026 at 12:32 AM
Well, this is depressing: Trump Pulls Out of Global Climate Treaty www.nytimes.com/2026/01/07/c...
Our paper on projections of elder mortality in the US due to sunny day flooding was published: www.thelancet.com/journals/lan...
Projections of future mortality risk in older adults from high-tide flooding in coastal areas of the USA: an economic modelling study
The cost of premature mortality in older adults is greater in magnitude than other
modelled effects of climate-induced high-tide flooding (eg, value of lost time due
to traffic delays). Results sugges...
www.thelancet.com
January 3, 2026 at 2:53 PM
Our paper on projections of elder mortality in the US due to sunny day flooding was published: www.thelancet.com/journals/lan...
This is depressing - by all reasonable evaluation, the CWG report was an embarrassing disaster. But, sadly unsurprisingly, the authors will apparently play central roles in a new NCA process: www.eenews.net/articles/its...
It’s the gold standard of US climate research. Contrarians could write the next one.
Researchers who have downplayed the threat of global warming have been asked to author the next National Climate Assessment.
www.eenews.net
December 22, 2025 at 9:41 PM
This is depressing - by all reasonable evaluation, the CWG report was an embarrassing disaster. But, sadly unsurprisingly, the authors will apparently play central roles in a new NCA process: www.eenews.net/articles/its...