Arctic Ocean started getting warmer decades earlier than we thought

Re:Arctic Ocean started getting warmer decades earlier than ... by refurb on Tuesday November 30, 2021 @09:42AM (#29392604)

Exactly! The article mentions it’s been warming since 1900 which is a scant decade after industrialization began. It seems to suggest other factors are contributing to global warming!

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Re:Arctic Ocean started getting warmer decades earlier than ... by jazzyjackson on Tuesday November 30, 2021 @09:58AM (#29392798)

for context, greenhouse effect was first described in 1824 and a good approximation of the warning effect of doubling of atmospheric CO2 was made in 1896 (+2.5~4 C) [0]

From 1800 to 1900, CO2 ppm rose from 280 to 300

Of course, from 1900 til today it has risen to over 400ppm

My point is, we were burning a significant amount of coal throughout 1800s - Acid rain was happening in the 1850s [1]

[0] http://interactive.fusion.net/200-years-of-climate-science-a...

[1] https://en.m.wikipedia.org/wiki/Acid_rain

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Re:Arctic Ocean started getting warmer decades earlier than ... by refurb on Tuesday November 30, 2021 @10:19AM (#29393033)

But we’ve doubled CO2 and haven’t seen a 2.5 to 4C temperature rise? What do you mean “good approximation”?

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Re:Arctic Ocean started getting warmer decades earlier than ... by jazzyjackson on Tuesday November 30, 2021 @10:39AM (#29393289)

280 to 400 is not doubling

I guess I was quoting the source in saying the pencil and paper estimate is in line with modern climate models

edit: from a cursory googling, looks like 450ppm is in line with 2C warning while 600pm is the higher end at 4C warning

note also temperature lags behind co2 (since heat is captured cumulatively over time) so even if we stabilized now at ~412ppm we will continue to see warming

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Re:Arctic Ocean started getting warmer decades earlier than ... by dragonwriter on Tuesday November 30, 2021 @09:50AM (#29392703)

> The article mentions it’s been warming since 1900 which is a scant decade after industrialization began

The industrial revolution is generally dated from 1760, which is...somewhat more than a decade before 1900.

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Re:Arctic Ocean started getting warmer decades earlier than ... by refurb on Tuesday November 30, 2021 @10:17AM (#29393007)

See other reply that shows CO2 emissions were negligible until 1900?

How are we driving mass warming in 1900 when CO2 emissions were barely 1% of what they are today?

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Re:Arctic Ocean started getting warmer decades earlier than ... by dragonwriter on Tuesday November 30, 2021 @11:34AM (#29393964)

> See other reply that shows CO2 emissions were negligible until 1900?

Literally, no, where? Even if I did see one claiming that, I’ve also seen the charts of net atmospheric CO2 from human activity that show a sharp rise already in progress by 1800.

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Re:Arctic Ocean started getting warmer decades earlier than ... by refurb on Tuesday November 30, 2021 @10:48PM (#29400447)

https://skepticalscience.com/EmmissionsAcceleration.html

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Re:Arctic Ocean started getting warmer decades earlier than ... by option_greek on Tuesday November 30, 2021 @11:00AM (#29393552)

Just grasping at straws. Without taking into consideration, the magnitude of co2 getting emitted, we can even blame cavemen with their cook fires for global warming.

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