SHOULD CLIMATE ENGINEERING BE CONSIDERED TO DEAL WITH CLIMATE CHANGE? AN EARTH SYSTEM MODEL EVALUATION OF MULTIPLE CLIMATE ENGINEERING APPROACHES.

Keller, David , Feng, Yuming and Oschlies, Andreas (2013) SHOULD CLIMATE ENGINEERING BE CONSIDERED TO DEAL WITH CLIMATE CHANGE? AN EARTH SYSTEM MODEL EVALUATION OF MULTIPLE CLIMATE ENGINEERING APPROACHES. [Talk] In: IMBER IMBIZO III. , 28.-31.01. 2013, Goa, India .

Full text not available from this repository.

Abstract

A number of climate engineering ideas have been proposed to deal with global climate change. The proposed methods either treat the causes or the symptoms of climate change through enhance carbon sequestration or the management of incoming solar radiation. Currently, the effectiveness of these methods and their secondary effects, which have the potential to cause catastrophic damage, are poorly understood. Although climate engineering is a controversial subject, evaluating the proposed methods is important because artificial manipulation of the climate may be necessary or desired by society at some time in the future and thus, the benefits and risks need to be quantified. Furthermore, since the costs of some methods are low enough that private entities or individual governments could implement them without a full global consensus, having a thorough understanding of them is necessary to prevent potentially dangerous actions. We use an Earth system model, which can identify not only local but also global feedback effects, to evaluate a number of climate engineering methods that are either ocean-based or will have a strong impact on the oceans. The methods include ocean fertilization, CO2 sequestering ocean pipes, large-scale afforestation, enhanced chemical weathering, and solar radiation management. Although these methods have been studied individually before, their effectiveness and risks, relative to one another, have not been evaluated with one model as we have done. Our results identify not only the effectiveness and risks of the methods, but also some of the related economic, political, and societal issues that need further study.

Document Type: Conference or Workshop Item (Talk)
Keywords: Climate engineering, climate change
Research affiliation: OceanRep > GEOMAR > FB2 Marine Biogeochemistry > FB2-BM Biogeochemical Modeling
Date Deposited: 18 Nov 2013 09:19
Last Modified: 18 Nov 2013 09:19
URI: http://oceanrep.geomar.de/id/eprint/22429

Actions (login required)

View Item View Item