I kind of feed off him and his cohort; they have the aersol forcing over the shipping lanes bought about by IMO2020, it then leads to more solar in because of less albedo, then i look at adjacents- like phytoplakenton are impacted by all the extra solar radiation, they also get hit by the ship effleunt coming from the sulpher open loop scrubbers the ships use, that effluent is roughly layed down where the previous aersol emmissions were because they are both sourced from ships, so i look at adajacent science for whats happening in the ocean, plakton, desoyxgeniusation, more thermal heat from sun, so the thermal substrate is different (more solar thermal heat getting deeper) and the heat "in" is different (rising), there is good science on the changes on the adjacent issues . The plakton map overlays the sulphur aerosol map, which overlays the effluent map (likely) -so the real picture is a worse scenario sneaking up on everyone, the territory is about to mawl the map

High sensitivity (ECS=4.5ºC) was determined using 4 independent lines of evidence. Using the "IMO2020 aerosol experiment" was only one of the methods.

IMO2020-6とかこんなんどうやったら思いつくんや

Important read on SRM health/ethics from a Global South lens, but the 'anticipatory governance' call risks more delay while temps spike hardest there. Moral hazard & termination shock are weak— we're already unmasking warming via SO₂ cuts (IMO2020). Time for small outdoor tests (e.g. 1Mt SO₂ stratospheric pulse) to get real data, not endless preprints. Global South needs options now, not just guardrails.

Der er også stigende efterspørgsel på diesel-fraktioner fra skibsfarten efter IMO2020. Så diesel i højere grad konkurrerer med marine fuel-blandinger. Samtidig er personbiler kun en lille del af den samlede efterspørgsel.

Are they really baffled? We’ve been awaiting dystopian warming ever since IMO2020 aerosol termination shock. The only thing confounding the analysis was the unmodeled pulsed warming of Hunga Tonga in 2022-2023. I demonstrated the HT link to polar amplification. No mysteries.

What do I mean by an accidental experiment in geoengineering? In 2020, new anti-pollution regulations to protect human health (IMO2020) cut the allowable sulfur content in marine fuels. This slashed shipping-related sulfur pollution ~85% overnight.

Dear Clark, a lot of people noticed the change of summer cloudiness. Clear blue sky, some days covered by lasting contrails. Missing hot day evening storms. We have to tell the reason. Refusal to see the change does not make anyone believe. IMHO, it is Sulphur limit by IMO2020.

The honest answer is that we don't know (yet). We now have almost 6 years of data since the inadvertent aerosol experiment of IMO2020 happened and the data indicates no decrease in regional flux yet. As 90% the Earth's Energy Imbalance is absorbed by the oceans, the ocean centered aerosol forcing change could have a much longer effect than a global greenhouse gas forcing of a similar magnitude would. x.com/LeonSimons8/status/195…

A second opportunity to examine the cloud reduction effects from shipping fuel pollution measures has revealed that the 80% cut in sulphur emissions reduces cloud droplet formation by 67%. When militia attacks disrupted the shipping lane in the Red Sea, many cargo ships were re-routed around the Cape of Good Hope. This provided researchers a unique opportunity to quantify aerosol-cloud interactions, reducing the largest source of uncertainty in global climate projections. In January 2020, the International Maritime Organisation (IMO) mandated a major reduction in sulphur content in marine fuels to decrease air pollution. Aerosols from ship emissions, especially sulphate, influence cloud formation and brightness, which in turn affect Earth's energy balance. Referred to as aerosol-cloud interactions, these particles cause clouds to form with smaller, more numerous droplets, making them brighter and longer lasting, thus more reflective of sunlight. This creates a cooling effect, which has historically masked about one-third of the warming caused by greenhouse gases. There has been large uncertainty about the strength of the aerosol effect which leads to large differences in future global warming projections. Different groups report effects between 10 and 80%. The new study used shipping NO2 measurements as their indicator of shipping levels in the Red Sea and South Atlantic, since those emissions were not effected by the IMO2020 rule change. By comparing NO2 levels with cloud droplets count, the relationship could be calculated. They found a 67% reduction in ships' cloud-altering abilities after the IMO regulations went into effect. The findings should help refine global climate models, offering policymakers and scientists more accurate climate predictions and insight into how environmental policy can protect human health. Being at the high end of previous estimates, this work supports high climate sensitivity (ECS), meaning more warming will unfold as pollution levels decline. It also helps explain the recent acceleration of global warming and adds urgency to decarbonisation efforts. A high ECS suggests warming of at least 3ºC well before the end of the century. Via Tom Harris Paper: acp.copernicus.org/articles/… #aerosols #climatechange #clouds #IMO2020 #ECS

אחד הגורמים המשמעותיים להתחממות אנו חווים כיום הינה הרגולציה הימית להפחתת פליטות גופרית IMO2020 הגופרית שפלטו האוניות בעומק הים יצרו שכבה רפלקטיבית לUV אשר שימשו כאפקט מקרר אך מאז 2020 הפליטות בים ירדו בכ80%-90 והשכבה נעלמה והתוצאה התחממות יתר, אמנם לא גורם היחיד אך חלק משמעותי

Just stop deploying. It'll clear itself out within a year. Look up IMO2020 and you'll see a real example, though that was from low altitude emissions, which comes down much faster.

What do I mean by an accidental experiment in geoengineering? In 2020, new anti-pollution regulations to protect human health (IMO2020) cut the allowable sulfur content in marine fuels. This slashed shipping-related sulfur pollution ~85% overnight. x.com/RARohde/status/1676529… 4/

IMO2020 shipping desulphurization clearly impacts this. The correlation between North Pacific Absorbed Solar Radiation and PDO completely reversed starting 2020: 3/x

As long as there is SO2, it cools off and if the plume reaches the stratosphere you get a longer resistance time. In the troposphere it falls out in roughly 10 days. Examples: Tropospheric Aerosol Injection Hawaiian volcanos - constantly pumping out SO2 Icelandic volcanos - more tropospheric SO2 Coal power plants - ground level SO2 IMO2020 - Ocean level SO2, then we stopped it India - it should be hotter, but the SO2 from the coal cuts the rate of warming to a third. Clean Air Act - US regulates SO2 tropospheric emissions Stratospheric Aerosol Injection Mt. Pinatubo (1991) - goldilocks, global cooling, 0.5C Hunga Tonga–Hunga Haʻapai (2022) - modern, cooled s. Hemisphere by 0.1C for a year, demo'ed hemispheric cooling. Maybe this volcano if it reaches the stratosphere, it could be the natural version of this by targeting SO2 near the Arctic: technologyreview.com/2024/02… Or maybe we want to save the AMOC and help out Europe we could do this: agupubs.onlinelibrary.wiley.…

Yes, that's the "what". The "why" is that the IMO2020 rules to lower ship sulfur emissions resulted in lower cloud cover in the N Pacific & N Atlantic. That's in addition to lower cloud cover due to global warming. @LeonSimons8

3/ Da gennaio 2020 è entrata in vigore una nuova normativa sulla navigazione ( #IMO2020 ), che ha ridotto la quantità massima di zolfo nei carburanti per la navigazione dal 3,5% allo 0,5%. Questo coincide con un rapido aumento della quantità di radiazione solare assorbita.

I find it interesting that IMO2020 was introduced to "save the planet" & ended up accidentally increasing sea surface temps. A classic example of unforeseen consequences & one of several reasons I think SAI would be a crap thing to do.

Esto es para que te sientas culpable y no rechistes cuando te lleguen los impuestos y el recibo de la luz/gas. Mañana a 100 €/MWatio. Pero no protestes, eh. Que el Mediterráneo está así por tu culpa. Para nada "genialidades" como la IMO2020 y similares no han intensificado todo.

Don't stop. Tech is not hard, just bigger balloons. Also, if there is a global war, we've got bigger fish to fry. We're already experiencing termination shock by reducing SO2 from the troposphere. Look at IMO2020 and what's currently happening in the Mediterranean Sea. Also, this: cremieux.xyz/p/from-pollutio… Or if you want to see the opposite, India should be hotter, but because of ground level emissions of SO2 it's not as bad as it should be: x.com/ASong408/status/193571…