Stratospheric aerosol geoengineering is the concept that including a layer of aerosol particles to the higher ambiance can cut back local weather modifications brought on by greenhouse gases equivalent to carbon dioxide.
Earlier analysis reveals that solar geoengineering may very well be achieved utilizing commercially accessible plane applied sciences to ship the particles at a price of some billion dollars per year and would cut back common world temperatures. Nonetheless, the query stays whether or not this strategy may cut back vital local weather hazards at a regional stage. That’s, may it cut back area-by-area modifications in water availability or excessive temperatures?
Outcomes from brand new research by UCL and Harvard researchers counsel that even a crude methodology like injecting sulfur dioxide within the stratosphere might scale back many necessary local weather hazards without making any area clearly worse off.
The findings, printed in the present day in Environmental Research Letters, used outcomes from a complicated simulation of stratospheric aerosol geoengineering to gauge whether or not the strategy may offset or worsen the results of climate change around the globe. How these results differed below totally different temperature situations was additionally examined.
The group discovered that halving warming by including aerosols to the stratosphere may average essential local weather hazards in nearly all regions. They noticed an exacerbation of the consequences of local weather change in solely a really small fraction of land areas.
The staff emphasizes that solar geoengineering solely treats the signs of climate change and never the underlying trigger, which is the construct-up of CO2 and different greenhouse gases within the environment. It ought to subsequently be thought-about as a complementary method to emissions cuts as an approach to deal with climate change.
The research is a comply with as much as a paper printed last year in Nature Climate Change confirmed related outcomes when solar geoengineering was approximated by merely turning down the solar. That prior examination raised the query: would the results maintain up with a more reasonable simulation utilizing injection of sulfur dioxide, the only recognized methodology of solar geoengineering.
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