This is known as a geo-engineering measure, and it doesn’t seem dangerous like some other schemes, such as emitting SO2 into the atmosphere to cool the planet (but only temporarily and at the cost of killing many people through the SO2 and acid rain).
One of the problems, however, is that a warmer atmosphere holds more water vapor, desiccating & harming/killing plants and soil, contributing to conditions ripe for wildfires, which along with stronger wind storms (which I believe are also expected with AGW) are indeed causing greater wildfires around the globe.
Now I think your idea should be pursued, but it should also be kept in mind all the (name removed by moderator)uts that would be required to do that – does the output outweight the (name removed by moderator)uts, or is it a boondoggle that contributes more to AGW. It’s worth looking into to see if it could be part of our arsenal to mitigate AGW.
Ultimately we need to do everything at all levels from individuals & families to businesses to governments to the UN. That’s going to mainly be a matter of becoming more energy/resource conservative/efficient. It would also entail getting onto alt energy as much as possible. And some methods of drawing down the CO2…of which your greening project could be a help. I’ve also looked a bit into biochar and olivine (peridot) sequestering – see
en.wikipedia.org/wiki/Biochar &
en.wikipedia.org/wiki/Olivine
But step one for us has been to reduce our GHG emissions, which we were able to do cost-effectively by about one-third or more. Then when we moved to Texas, we got onto Green Mountain 100% wind energy, and I guessimate that (along with our other measures) brought down our GHG emissions to 50% below our 1990 emissions. And now just 3 months ago we bought a Chevy Volt, which we plug into that wind energy and drive on the wind. It was expensive, but since we’ve been saving $1000s by implementing our other environmental measures, we were in good shape to buy it, plus I figure it too will be saving us $1000s after it pays for the difference in the other car we looked at in about 6.5 years. And I guesstimate that (along with the other measures) has brought down our GHG emission perhaps 70% below our 1990 emissions. And all have been money-saving measures. Maybe we should look into sacrificing a bit, bring it down to 75% below our 1990 emissions, or there are still many many cost-effective measure we have yet to implement.
I think when we retire in a couple of years, we may look more into the biochar measure – maybe turning our moringa trees (which grow fast like weeds, even in poor, drought, and flooded soils & provide us nutritious food, and spring back after killing freezes – see the PowerPoint in the right column of
treesforlife.org/our-work/our-initiatives/moringa ) into a stead feed for biochar.
We need to pursue every avenue, but make sure they are not more harm than good (there are also some issue re biochar, which have to be studied more).