Re:US-Canada heatwave 'virtually impossible' without warming
by 0807test on Thursday July 08, 2021 @09:12AM
(#27771487)
There is a great book on this subject called "The Sixth Extinction: An Unnatural History".
https://www.goodreads.com/book/show/17910054-the-sixth-extin...
Re:US-Canada heatwave 'virtually impossible' without warming
by dghughes on Thursday July 08, 2021 @09:21AM
(#27771612)
The acidification of the ware is what goes unnoticed. The heat adds to ocean volume but CO2 acidifies water more but it's not noticeable by humans.
Re:US-Canada heatwave 'virtually impossible' without warming
by warlog on Thursday July 08, 2021 @09:30AM
(#27771702)
Wouldn't heat cause CO2 to bubble out of solution (and elevate pH)?
Re:US-Canada heatwave 'virtually impossible' without warming
by CrazyStat on Thursday July 08, 2021 @10:33AM
(#27772447)
There are two effects:
1. As the concentration of CO2 in the atmosphere increases, the partial pressure of CO2 also increases. This tends to increase the concentration of CO2 dissolved in seawater.
2. As the temperature of the seawater increases, the solubility of CO2 decreases.
(1) is much stronger than (2) so far. Atmospheric CO2 concentration has increased much more than CO2 solubility has decreased due to temperature.
It's generally agreed that we are already living within a mass extinction event[0]
[0] https://en.wikipedia.org/wiki/Anthropocene#Biodiversity "Humankind has entered what is sometimes called the Earth's sixth major extinction. Most experts agree that human activities have accelerated the rate of species extinction.The exact rate remains controversial – perhaps 100 to 1000 times the normal background rate of extinction"