I was debating with the climate change deniers who kept saying I was an alarmist.
Then one day they started strongly warning me, saying that if C02 goes too low we won't be able to grow enough food and civilisation will collapse.
After that I started calling them the Alarmists! 😊
Every day after that I had them over a barrow, as now I kept calling them the low CO2 Alarmists. There's plenty of C02, I told them, so no need to worry so much.
Why do they believe CO2 will fall to low levels?
ReplyDeleteIf we reduce the amount of fossil fuels we burn, CO2 will go down. They make a big thing about CO2 being plant food.
DeleteIf ocean acidification continues, CO2 may never come down.
ReplyDeleteStratospheric aerosol injection
ReplyDeleteStratospheric aerosol injection is a proposed method of solar geoengineering (or solar radiation modification) to reduce human-induced climate change. This would introduce aerosols into the stratosphere to create a cooling effect via global dimming, which occurs naturally from volcanic eruptions. It appears that stratospheric aerosol injection, at a moderate intensity, could counter most changes to temperature and precipitation, take effect rapidly, have low direct implementation costs, and be reversible in its direct climatic effects. The Intergovernmental Panel on Climate Change concludes that it "is the most-researched [solar geoengineering] method, with high agreement that it could limit warming to below 1.5°C." However, like other solar geoengineering approaches, stratospheric aerosol injection would do so imperfectly and other effects are possible, particularly if used in a suboptimal manner.
Various forms of sulfur have been proposed as the injected substance, as this is in part how volcanic eruptions cool the planet. Others such as calcite are also under consideration. The leading proposed method of delivery is custom aircraft.
source: Stratospheric aerosol injection
CO2 is plant food. Plant growth is limited by the very small amount of CO2 there is in the atmosphere. It's much more vigorous when CO2 concentrations are higher.
ReplyDeleteThe optimal is about 900ppm, but varies wildly between varieties and species.
That's about twice what the current concentrations are.
The climate sceptics are correct. Increased CO2 causes plants to grow more vigourously. That's one of the automatic stabiliser functions that keeps the short term carbon cycle under control.
However we are throwing out so much that increased plant growth in trees isn't sufficient to offset human activity. And the negative effects of extreme weather destroys far more crops than the small boost to growth gains.
Greece is burning... so hot even the cicadas need air conditioning :(
ReplyDeletere: fires in Greece
ReplyDeleteThe sound...
Now Greece. Wild fire on Evia Beach