Jack Geary Murphy
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jackgearymurphy.bsky.social
Jack Geary Murphy
@jackgearymurphy.bsky.social
Lecturer in Earth & Environment @upenn.bsky.social

Geochemist | Earth Historian | Returned Peace Corps Volunteer | Teacher | Father | Denizen of 🌍

Explore, observe, measure, model, learn, tell friends, repeat
What the hell did I just watch! A little context please. . . 😂
March 19, 2025 at 1:50 PM
Whoops…I think that’s why the Rock looks so surprised.
March 14, 2025 at 5:47 PM
March 14, 2025 at 11:56 AM
Right, that’s an interesting question about “outsourcing emissions” in globalized marketplace. I suspect since transport + electricity production are the majority of US emissions, it’s not the main story, but I’m curious how that’s is attributed.
December 16, 2024 at 3:09 PM
Since we can reduce emissions in the US and EU, the question is can China and India turn that trend around. . .
December 16, 2024 at 2:51 PM
Now, the point of the plot is just a reminder that while the TOTAL global emissions has not declined, as you show, annual CO2 emissions has been DECLINING in the EU since the 1980s and in the US since about 2008. Total global emissions is what matters, of course, emissions reductions is happening.
December 16, 2024 at 2:51 PM
(2) “cement carbonation” - cements and mortars have calcium hydroxide in them which reacts with CO2 to make caclium carbonate, CaCO3, sequestering the CO2 as rock. But yes, there is also significant CO2 release during cement production. However, so of that is in the past for current stock of cement
December 16, 2024 at 2:51 PM
Ok, sure thing. First definitions: (1) “Bunkers” refers to bunker fuels, which are fuels used in international aviation and shipping. These emissions can’t be attributed ton any individual nation….
December 16, 2024 at 2:50 PM
Since we can reduce emissions in the US and EU, the question is can China and India turn that trend around. . .
December 16, 2024 at 2:45 PM