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It's troubling that oceans are warming suddenly, but there is a very likely reason for it: https://www.science.org/content/article/changing-clouds-unforeseen-te

It's troubling that oceans are warming suddenly, but there is a very likely reason for it: https://www.science.org/content/article/changing-clouds-unforeseen-test-geoengineering-fueling-record-ocean-warmth https://www.science.org/content/article/changing-clouds-unfo...

melling 3y ago
“Pollution cuts have diminished “ship track” clouds, adding to global warming” So during the age of sailing ships the oceans were warmer? We’ve likely only had a 100 year period where we had a sufficient number of polluting ship to have made a difference
- wahern 3y ago
  They're saying that these clouds have blunted the impact of CO2 emissions. Most of the CO2 increase (to ~420ppm) above pre-industrial levels (from ~275ppm) has occurred over the past 100 years; about half of it has only been since ~1990 (then ~350ppm).
- blooalien 3y ago
  > "So during the age of sailing ships the oceans were warmer?" Highly unlikely, because of the many other factors involved, such as a completely different overall climate situation during that time period; A climate not nearly as heavily affected by human actions as the climate of today, to name just one of the most glaringly obvious factors.
ChatGTP 3y ago
I've wondered whether or not longer term this will have a cooling effect because as the atmosphere clears up, shouldn't clouds become more reflective therefore having a cooling effect? A whiter cloud not reflect more sunlight back into space?
Nursie 3y ago
A contributor to the effect, sure, not a reason in isolation.
- ltbarcly3 3y ago
  You should explain this in detail to the authors of the study so they can issue a correction.
  - Nursie 3y ago
    "The obvious and primary driver of this trend is society’s emissions of greenhouse gases, which trap heat that the oceans steadily absorb. Another influence has been recent weather, especially stalled high-pressure systems that suppress cloud formation and allow the oceans to bake in the Sun. But researchers are now waking up to another factor..." It seems like they might just already know that.
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workfromspace 3y ago
https://archive.is/MuurG https://archive.is/MuurG (Parent link without the paywall)

melling 3y ago

“Pollution cuts have diminished “ship track” clouds, adding to global warming” So during the age of sailing ships the oceans were warmer? We’ve likely only had a 100 year period where we had a sufficient number of polluting ship to have made a difference

wahern 3y ago
They're saying that these clouds have blunted the impact of CO2 emissions. Most of the CO2 increase (to ~420ppm) above pre-industrial levels (from ~275ppm) has occurred over the past 100 years; about half of it has only been since ~1990 (then ~350ppm).
blooalien 3y ago
> "So during the age of sailing ships the oceans were warmer?" Highly unlikely, because of the many other factors involved, such as a completely different overall climate situation during that time period; A climate not nearly as heavily affected by human actions as the climate of today, to name just one of the most glaringly obvious factors.

ChatGTP 3y ago

I've wondered whether or not longer term this will have a cooling effect because as the atmosphere clears up, shouldn't clouds become more reflective therefore having a cooling effect? A whiter cloud not reflect more sunlight back into space?

Nursie 3y ago

A contributor to the effect, sure, not a reason in isolation.

ltbarcly3 3y ago
You should explain this in detail to the authors of the study so they can issue a correction.
- Nursie 3y ago
  "The obvious and primary driver of this trend is society’s emissions of greenhouse gases, which trap heat that the oceans steadily absorb. Another influence has been recent weather, especially stalled high-pressure systems that suppress cloud formation and allow the oceans to bake in the Sun. But researchers are now waking up to another factor..." It seems like they might just already know that.
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workfromspace 3y ago

https://archive.is/MuurG https://archive.is/MuurG (Parent link without the paywall)