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Unintended Hazards of Geoengineering

Author(s): Saunders P

Published: July, 2012

Publisher: Institute of Science in Society

Tags: Environmental Side-Effects, Research

URL: http://www.i-sis.org.uk/Unintended_Hazards_of_Geoengineering.php

Abstract: Harvard geoengineers are set to spray sun-reflecting chemical particles into the atmosphere to cool the planet from a balloon at 80 000 feet over Fort Sumner, New Mexico. Chief investigator David Keith manages a multimillion dollar research fund awarded by Microsoft founder Bill Gates, and has already commissioned a study by a US aerospace company that made the case for large-scale deployment of solar radiation management technologies. The experiment, to be conducted with James Anderson within a year, will release tens to hundreds of kilograms of particles to measure the impacts on ozone chemistry and test ways of making sulphate aerosols the appropriate size.

Many scientists are opposed to geoengineering experiments, preferring to study the impacts of sulphuric dust emitted by volcanoes, and to use modelling to identify the risks. A British field test involving a balloon and hose-pipe to pump water into the sky, which was part of the government-funded Stratospheric Particle Injection for Climate Engineering (Spice) project was cancelled after public outcry.

But there are good reasons why geoengineering should not be considered.


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