iiinova — where your digital self keeps evolving

Felix Schaumann

@felixschaumann.bsky.social

354 followers 400 following 24 posts

Interested in climate change and all the science around it - PhD candidate in climate economics at ETH Zürich. Mainly working with IAMs. also @felixschaumann@mas.to, @felixschaumann@twitter

Posts Replies Media

Felix Schaumann @felixschaumann.bsky.social · 25/02/2025

[8/11] The SCC is raised by about 1% because of the AMOC carbon feedback (right panel). This is of similar magnitude, but of opposite sign, to the previous economic impact estimates of AMOC weakening (left panel):

Relative SCC changes due to AMOC temperature effects and AMOC carbon effects in comparison.

130 0

Felix Schaumann @felixschaumann.bsky.social · 25/02/2025

[6/11] But the cumulative effect for this century is - depending on the projection of AMOC strength - between 4 and 12 PgC. For context: Every year we emit around 10 PgC, so by 2100, AMOC weakening could reduce ocean storage by up to a full year of current emissions to the atmosphere.

CMPI6 projections of AMOC strength and the associated ocean carbon storage reductions in 2100.

140 0

Felix Schaumann @felixschaumann.bsky.social · 25/02/2025

[5/11] What do we find? Carbon cycle impacts We find that, in a year with a 1 Sv weaker AMOC, 0.023 PgC less will flow into the ocean. That doesn't sound like much, maybe 0.2% of current anthropogenic CO2 emissions.

Scatter plot of carbon flux changes over AMOC strength with a linear regression line.

151 0

Felix Schaumann @felixschaumann.bsky.social · 25/02/2025

[4/11] How do we do it? Our methods in a cartoon: a) freshwater hosing in a biogeochemically-only coupled ESM b) yearly carbon flux changes as a function of yearly AMOC strength c) cumulative carbon flux reductions in the 21st century following CMIP6 AMOC projections d) changes in SCC estimates

140 0

Felix Schaumann @felixschaumann.bsky.social · 14/04/2024

Interested in economic effects of AMOC weakening? Join us tomorrow afternoon in #EGU24 session CL3.2.3 to hear about how the AMOC affects the carbon cycle and through that the social cost of carbon! Also if you just want to hang out and talk climate economics, anytime! :)

title slide of our talk "flipping the cost of tipping? economic impacts of reduced AMOC carbon drawdown"

041 0

Felix Schaumann @felixschaumann.bsky.social · 11/12/2023

Stoked to be at my first AGU next week! Check out my talk on Thursday on economic assessment of AMOC changes, and let me know if you wanna grab a coffee and talk science ☕🤓 #AGU23

Reduced AMOC Carbon Drawdown and its Effect on the Social Cost of Carbon — slide advertising talk at AGU23

042 0