Aerosol impacts on Sahelian rainfall
Nature Climate Change
2013년4월1일

Concentrations of fine particles in the stratosphere can influence the occurrence and severity of the Sahelian drought, according to work published online in Nature Climate Change this week. Analysis of historical observations, from 1900 to 2010, shows substantial Northern Hemisphere volcanic eruptions preceded three of the four driest summers.
Using this knowledge, Jim Haywood and colleagues modelled episodic volcanic eruptions, as well as continuous injection of particles into the stratosphere to mimic geoengineering. They show that heavy aerosol loadings in the Northern Hemisphere are a precursor to Sahelian drought, whereas Southern Hemisphere loading results in increased rainfall and greening.
These findings suggest that further study is needed to assess possible impacts before consensus on the global governance of any future aerosol geoengineering projects can be reached.
doi: 10.1038/nclimate1857
리서치 하이라이트
-
3월4일
Environment: Reservoirs account for more than half of water storage variabilityNature
-
3월2일
Evolution: Neanderthals may have heard just like usNature Ecology & Evolution
-
3월2일
Geoscience: Earth’s atmosphere may return to low-levels of oxygen in one billion yearsNature Geoscience
-
2월26일
Environment: Shifting from small to medium plastic bottles could reduce PET wasteScientific Reports
-
2월24일
Environment: European forests more vulnerable to multiple threats as climate warmsNature Communications
-
2월11일
Environment: Global CFC-11 emissions in declineNature