Oceans are turning greener due to climate change
nature.com
nature.com
It’s another carbon sink in our planet.
You're both right, a bit. It's a near certainty that these cells "eat" CO2, that's how all other plankton works. They eat CO2, live their life, die, sink to the bottom where their remains slowly sink over millions of years.
This definitely removes CO2 from the oceans (storing it packaged on the bottom) and should remove CO2 from the atmosphere too due to the enormous contact surface.
What is not known is how much it affects CO2 concentrations and while massive algae blooms have been occurring more and more, we're not very sure why and what will happen with them in the future.
Most Earth-based counters historically have involved megaflora sequestering CO2 as they die, however this is over the scale of hundreds of thousands of years, and requires large expanses of land to host plants to do the sequestering. We've doled out most of this land already, so this isn't likely to happen. If you're looking for a deus ex machina, you might wanna hold out for a supervolcano to eject a bunch of material into the atmosphere.
And for your specific example "increased CO2 -> more plankton -> more fish", this tends to not be the case in reality. Large algae blooms result in mass fish die offs. And now combine that with the the presently-occurring Increased CO2 -> warmer temperatures -> warmer water -> less dissolved O2 -> dead fish
Whether humans are a significant cause is really only relevant to that last question.
And your response is useful. “From reading”.
Relative to tens of thousands of scientists of diverse fields, educational backgrounds, affiliated institutions, geographical regions, areas of study, environments of study, experimental approaches, data sources, mathematical analysis, and lots of reading, etc. basing a contrarian view on some reading is inadequate as a credible rebuttal.
For the most part, people on this site are looking for greater insight, not greater expression of personal opinions.
The comment OP called trolling would be much stronger and more interesting if it posted a "credible rebuttal" instead of being snarky and rude. If that hits an issue with the bullshit asymmetry principle[1] for you, downvote and move on with your life.
I see your points but this comes over very low on the snarky scale to me. More Socratic.
It is also a point (expertise matters) that seems to be especially overlooked in climate change discussions.
I also didn’t see how downvoting someone for not picking up on a point helps anything.
And I don’t see anything written to be unkind. Directness isn’t unkindness.
This certainly does not look like a difference of one or two degrees per century. Regardless which is the actual increase of the average temperature, there can be no doubt that this is a dramatic change which will have unpredictable consequences and also that at least during the last few thousands of years there has never been a so great temperature change.
Do you trust your government's historic weather statistics?
Srsly we have 2023 :-(
And obviously other faces were calculated in like sun phase etc....
Even in hn people are not able to just research this properly :(
The new claim is that population die off caused the Little Ice Age, thanks to disease and 'genocide'... 55 million out of roughly 500M.
If you buy that, you can't really deny the impact of the population increasing to 7.5B.
https://ourworldindata.org/grapher/population?time=900..late...
https://climate.nasa.gov/evidence/
https://www.climate.gov/news-features/understanding-climate/...
It’s like trying to understand how stock market works by using only last minute as a reference.
Scientists have been studying this in depth for a long time now. They know what things push on the climate naturally and how much they're pushing now. They know how much raising CO2 pushes on the climate.
The best estimate is that humans have caused 100% of the warming in the last 50 years. I think if you look at the long term trends before the industrial revolution it's pretty clear that we've caused more than 100% of the warming because there was a clear cooling trend before we stepped in.
We have caused a 50% increase in CO2 in the atmosphere. The basic physics of that is the co2 we released is trapping 4 Hiroshima bombs per second worth of extra heat energy in the climate system. The planet is hotter than it's been in 100,000 years. CO2 the most important greenhouse gas is higher than it's been in millions of years. The oceans have absorbed half our co2 emissions and become 25% more acidic as a result.
This is a massive, reckless, unplanned experiment with the thermal and chemical properties of the only planet we have. There's no backup. Nobody who isn't insane would have knowingly decided to do this this way.