Monat: Mai 2017

Peer-reviewed Publications

Xia, Lili; et al. (2017): Impacts of Stratospheric Sulfate Geoengineering on Tropospheric Ozone

Xia, Lili; Nowack, Peer J.; Tilmes, Simone; Robock, Alan (2017): Impacts of Stratospheric Sulfate Geoengineering on Tropospheric Ozone. In: Atmos. Chem. Phys. Discuss., S. 1–38. DOI: 10.5194/acp-2017-434

„Using a version of the Community Earth System Model from the National Center for Atmospheric Research that includes comprehensive tropospheric and stratospheric chemistry, we model both stratospheric sulfur injection and solar irradiance reduction schemes, with the aim of achieving equal levels of surface cooling relative to the Representative Concentration Pathway 6.0 scenario. This allows us to compare the impacts of sulfate aerosol and solar dimming on atmospheric ozone concentrations.„

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Media

Axios: We asked five experts about engineering the climate

„What do we need to know before someone pushes start on a large-scale geoengineering attempt? And what Earth-altering experiment should we try first? Five leading researchers answered those questions and gave us their take on the risks, as well as the thorny ethical and legal issues that come with unleashing a technology that could span countries, cultures, and generations.“

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Media

Reuters: Reversing climate change with carbon-sucking plantations not realistic, scientists warn

On Boysen et al. (2017). „A proposal to turn back climate change by planting vast swathes of land with fast-growing trees and plants that can be burned for electricity, with the carbon they release captured and stored, is not “realistic and feasible”, scientists said Thursday. The idea, included in many economic and science models on how the world might try to reverse runaway climate change, cannot serve as an emergency back-up if the world fails to rapidly switch from fossil fuels to renewable energy and then regrets the consequences, said scientists at the Potsdam Institute for Climate Impact Research in Germany.“

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Peer-reviewed Publications

Boysen, Lena R.; et al. (2017): The limits to global-warming mitigation by terrestrial carbon removal

Boysen, Lena R.; Lucht, Wolfgang; Gerten, Dieter; Heck, Vera; Lenton, Timothy M.; Schellnhuber, Hans Joachim (2017): The limits to global-warming mitigation by terrestrial carbon removal. In: Earth’s Future 4, S. 514. DOI: 10.1002/2016EF000469[nbsp]

„Massive near-term greenhouse gas emissions reduction is a precondition for staying “well below 2°C” global warming as envisaged by the Paris Agreement. Furthermore, extensive terrestrial carbon dioxide removal (tCDR) through managed biomass growth and subsequent carbon capture and storage is required to avoid temperature “overshoot” in most pertinent scenarios.“

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Peer-reviewed Publications

Sandler, Todd (2017): Collective action and geoengineering

Sandler, Todd (2017): Collective action and geoengineering. In: Rev Int Organ 39 (1), S. 45. DOI: 10.1007/s11558-017-9282-3

„This paper investigates some of the myriad collective action implications of geoengineering. Its two major components – carbon dioxide reduction and albedo modification – present diverse collective action and strategic aspects. Carbon dioxide reduction may be characterized by Prisoners’ Dilemma, threshold, or harmony games, depending on capture and sequestration procedures. In contrast, albedo modification may abide by chicken, coordination, or threshold games.“

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Media

Mobi Picker: Negative Emissions Technology May Solve Climate Change, But It’s Not Going To Be A Cakewalk For Sure

„Worth noting, as the carbon dioxide in the atmosphere reaches 400 parts per million for the first ever time in human history, some scientists and environmentalists are also pondering over the idea of directly capturing carbon dioxide from the atmosphere using huge versions of atmospheric scrubbers designed to remove CO2 from the air above and around us on board spacecraft.„

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