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Geoengineering Projects That Could Offset Global Warming

Source:  Copyright 2009, ScienceDaily
Date:  January 28, 2009
Original URL: Status ONLINE


The first comprehensive assessment of the climate cooling potential of different geoengineering schemes has been carried out by researchers at the University of East Anglia (UEA).

Key findings include:

Enhancing carbon sinks could bring CO2 back to its pre-industrial level, but not before 2100 -- and only when combined with strong mitigation of CO2 emissions

Stratospheric aerosol injections and sunshades in space have by far the greatest potential to cool the climate by 2050 - but also carry the greatest risk

Surprisingly, existing activities that add phosphorous to the ocean may have greater long-term carbon sequestration potential than deliberately adding iron or nitrogen

On land, sequestering carbon in new forests and as 'bio-char' (charcoal added back to the soil) have greater short-term cooling potential than ocean fertilisation

Increasing the reflectivity of urban areas could reduce urban heat ...

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