Pauline von Hellermann#ClimateDiary Yep, this is where we are at.
Michał Kawalec@pvonhellermannn
Do we know the source of the step change in the last two years? I'm hearing it can be the sulfur ban in bunker oil but maybe there are other sources?
@monad_cat i am not an expert but yes, apart from el nino (ehich had an impact last year but doesn’t explain overall, sustained step change) the sulphur ban is def a possible explanation. Hansen suggested this in a paper last year that the majority of climate scientists were sceptical of, eg M Mann, but i think slowly others are considering this explanation too. However, still not fully accepted so may not be right.
Adding this recent article just shared by @abm0
Abrupt reduction in shipping emission as an inadvertent geoengineering termination shock produces substantial radiative warming - Communications Earth & Environment
Shipping fuel regulations in 2020 that reduced sulfur dioxide emissions by 80% led to substantial warming over parts of the oceans, according to simulations with Earth system, machine learning, and energy balance models, suggesting a termination shock after marine cloud geoengineering could be severe.
@pvonhellermannn
Thank you! I'm wondering if there is any escape from having to add some targeted geoenineering to our unplanned geoenineering so our systems don't collapse. I'm thinking of high altitude sulfur injections and the like.
Thank you! I'm wondering if there is any escape from having to add some targeted geoenineering to our unplanned geoenineering so our systems don't collapse. I'm thinking of high altitude sulfur injections and the like.