4 ms·

There's a good chance that the sudden bump in sea surface temperature is a consequence of us cleaning up marine diesel. Which is at least interesting, because i

by flir 3y ago

There's a good chance that the sudden bump in sea surface temperature is a consequence of us cleaning up marine diesel. Which is at least interesting, because it suggests we were doing geoengineering without even knowing it. (Random thought: what's the sulphur content of automotive diesel? I know it's cleaner, but there are so many more cars than boats. Could we see another sea surface temperature bump as we phase out diesel cars?)

_y5hn 3y ago
It could be that (removing sulphur from shipping fuel): https://www.theguardian.com/environment/2020/jan/01/shipping-fuel-regulation-to-cut-sulphur-levels-comes-into-force https://www.theguardian.com/environment/2020/jan/01/shipping... It could be the underwater Tonga volcano erruption, which put alot of water into the atmosphere. Water is also a GHG. https://www.nasa.gov/centers-and-facilities/goddard/tonga-eruption-blasted-unprecedented-amount-of-water-into-stratosphere/ https://www.nasa.gov/centers-and-facilities/goddard/tonga-er... It could be El Nino part of the ENSO-cycle in addition. https://www.npr.org/2023/06/08/1181086972/el-nino-has-officially-begun-heres-what-that-means-for-the-u-s https://www.npr.org/2023/06/08/1181086972/el-nino-has-offici... All these are temporary masking conditions. They also add to feedback effects, for increased warming. So could be partly accellerating heating as well. I think some researchers are seeing accelleration in the overall trend. You can eyeball this with a ruler as well. Even though it might be too early to tell, it's hard to find any negative feedback loops to counter all these positive ones. For cars, I think we'd probably see increase in surface temperature on land. People might care a bit more then. It could be removed from both gas and diesel. That would bring pollution down, but also remove aerosols currently masking effects from GHG. https://www.futurity.org/potassium-fuel-sulfur-1369772-2/ https://www.futurity.org/potassium-fuel-sulfur-1369772-2/ UPDATE: As noted in another comment here. Car fuel is quite a bit different category than bunker fuel (heavy fuel oil). We might still observe "unmasking"-impacts if implemented generally though. We'd notice it more too, as the impact would be right where we use our cars.
- flir 3y ago
  No useful comment, except to say I thought that was a great response. Thoughtful and detailed despite being an extended "it's complicated". My ignorance feels much better informed ;)
jijijijij 3y ago
I don't think ships are burning "diesel", but basically crude oil. It's not even in the same category as car fuel.

by flir 3y ago

_y5hn 3y ago

It could be that (removing sulphur from shipping fuel): https://www.theguardian.com/environment/2020/jan/01/shipping-fuel-regulation-to-cut-sulphur-levels-comes-into-force https://www.theguardian.com/environment/2020/jan/01/shipping... It could be the underwater Tonga volcano erruption, which put alot of water into the atmosphere. Water is also a GHG. https://www.nasa.gov/centers-and-facilities/goddard/tonga-eruption-blasted-unprecedented-amount-of-water-into-stratosphere/ https://www.nasa.gov/centers-and-facilities/goddard/tonga-er... It could be El Nino part of the ENSO-cycle in addition. https://www.npr.org/2023/06/08/1181086972/el-nino-has-officially-begun-heres-what-that-means-for-the-u-s https://www.npr.org/2023/06/08/1181086972/el-nino-has-offici... All these are temporary masking conditions. They also add to feedback effects, for increased warming. So could be partly accellerating heating as well. I think some researchers are seeing accelleration in the overall trend. You can eyeball this with a ruler as well. Even though it might be too early to tell, it's hard to find any negative feedback loops to counter all these positive ones. For cars, I think we'd probably see increase in surface temperature on land. People might care a bit more then. It could be removed from both gas and diesel. That would bring pollution down, but also remove aerosols currently masking effects from GHG. https://www.futurity.org/potassium-fuel-sulfur-1369772-2/ https://www.futurity.org/potassium-fuel-sulfur-1369772-2/ UPDATE: As noted in another comment here. Car fuel is quite a bit different category than bunker fuel (heavy fuel oil). We might still observe "unmasking"-impacts if implemented generally though. We'd notice it more too, as the impact would be right where we use our cars.

flir 3y ago
No useful comment, except to say I thought that was a great response. Thoughtful and detailed despite being an extended "it's complicated". My ignorance feels much better informed ;)

jijijijij 3y ago

I don't think ships are burning "diesel", but basically crude oil. It's not even in the same category as car fuel.