geoengineering


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geoengineering

[‚jē·ō‚en·jə′nir·iŋ]
(science and technology)
Artificial modification of earth systems to counteract anthropogenic effects, such as increasing carbon dioxide uptake by fertilizing ocean surface waters or screening out sunlight with orbiting mirrors.
References in periodicals archive ?
On Friday, the ISO stressed that SRM and similar untested geoengineering schemes were "out of the scope" of the guidance.
This past March at the United Nations environmental conference in Nairobi, Kenya, the United States and Saudi Arabia blocked an effort to scrutinize geoengineering and its implications for international governance.
This past March at the United Nations environmental conference in Nairobi, Kenya, the United States and Saudi Arabia blocked an effort to scrutinise geoengineering and its implications for international governance.
He, along with Carnegie's Lei Duan (a former student from Zhejiang University), Long Cao of Zhejiang University, and Govindasamy Bala of the Indian Institute of Science, set out to compare the effects on the climate of a volcanic eruption and of solar geoengineering. They used sophisticated models to investigate the impact of a single volcano-like event, which releases particulates that linger in the atmosphere for just a few years, and of a long-term geoengineering deployment, which requires maintaining an aerosol layer in the atmosphere.
Geoengineering is an umbrella term that involves manipulating the Earth's natural processes to attenuate either the build-up of atmospheric carbon dioxide or its effects.
"If you look out the window on an airplane, you can see clouds with all sorts of different structures," says Ben Kravitz of Indiana University, who works on comparing geoengineering model simulations.
Taken together, these two approaches are known as geoengineering. And, as the effects of climate change worsen, a growing number of policymakers, scientists and entrepreneurs are considering such options more seriously.
We present here a brief account of the Indian scientific research into solar geoengineering. Climate modeling constitutes the major component of this geoengineering-relevant climate science research.
As a result, geoengineering schemes once dismissed as impractical, unnecessary or outright dangerous -- injecting particles into space to deflect the sun, storing CO2 in the ground, planting millions of square kilometers in biofuels -- have rapidly moved from the margins toward the center of scientific and policy discussion.
As the national security ramifications of climate change grow more pronounced, climate manipulation technologies, called geoengineering, will become more attractive as a method of staving off climate-related security emergencies.
With a miniature experiment to try to cool the planet by blocking sunlight planned in Arizona within a year, international rules to govern "geoengineering" efforts must be put in place quickly, a governance advocate said.