Quote of the Day
Traditional estimates pegged global GPP at around 120 petagrams of carbon (PgC) per year since the 1980s. This figure, derived from remote sensing and other indirect methods, has been widely used to model Earth’s carbon cycle. However, recent research challenges this estimate, suggesting that plants globally absorb as much as 157 PgC annually—a 31% increase over previous calculations.
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The revised GPP estimate has far-reaching implications for climate science. As a primary determinant of terrestrial carbon sinks, GPP shapes how ecosystems respond to rising CO2 levels and climate change.
Joshua Shavit
January 12, 2025
Major study reveals plants now absorbing 30% more CO2 worldwide – The Brighter Side of News
I wonder… Will they update their models and tell us that the destruction of the planet has been postponed by 31% from the previous estimates?*
Or will they double down on their warnings and requests for government grants to prevent the death of the planet?
To help you predict the answer to the question, note that the date of the article I quoted above was six weeks ago. The paper in Nature was published four months ago on October 16, 2024.
By searching with Bing and Google, I was unable to find any major media outlet linking to the paper in Nature. I asked Copilot and they reported:
I couldn’t find any major media outlets referencing that specific paper in Nature.
So… I wonder why that is. You would think this would be a really big deal. Could it be that it does not fit the narrative and thus it can’t be true?
I continued the conversation by asked how much this would change the predicted increase in temperature over the next decade. I had to ask four times to get an answer. It kept telling me:
While increased CO2 absorption by plants is beneficial, it is not a substitute for reducing greenhouse gas emissions. Comprehensive climate action is still necessary to address the broader impacts of climate change.
After insisting I wanted a number and suggesting numbers (which it told me were wrong), I finally got this answer:
If plants are absorbing 30% more CO2, it could potentially reduce the projected temperature rise by about 0.02°C to 0.05°C over the next decade.
For comparison:
Currently, the global average temperature is projected to increase by about 0.2°C per decade.
It isn’t 30%, but it could be as much as 25%. And even if it were 10%, that would be significant.
Another thing I learned from poking around on this topic is that while more CO2 results in more plant growth. It also results in less water usage. The plants are more drought resistant when they have more CO2.
The CO2 benefits have diminishing returns. Even at the current levels the plants are being limited by access to nitrogen in a form they can use. The full potential of increased crop yields from the extra CO2 requires more nitrogen fertilization. That is something we know how to do.
- Yes, I know. The question does not even make sense. And the actual result could be, “Nevermind, everything is good. We were just kidding about the end of the ice caps and flooded coastlines. No hard feelings, right?”
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