Schlagwort: climate modelling

Calls

Call for Abstracts: Invitation to Submit to AGU 2020 Session on Approaches in Measurements and Modeling for Geoengineering

Deadline: 29. July 2020

„This session solicits contributions from participants who have interest and expertise in measurements and modeling of the Earth System that can be applied to Carbon Dioxide Removal and Solar Radiation Management. Through linking these fields in this session, current technologies and ideas will be shared in both realms, promoting further scientific understanding of geoengineering implications.“

LINK

[nbsp]
#
Peer-reviewed Publications

Workman, Mark; et al. 2020: “Decision Making in Contexts of Deep Uncertainty – An Alternative Approach for Long-Term Climate Policy.”

Workman, Mark, Kate Dooley, Guy Lomax, James Maltby, and Geoff Darch. 2020: “Decision Making in Contexts of Deep Uncertainty – An Alternative Approach for Long-Term Climate Policy.”[nbsp]Environmental Science [&] Policy[nbsp]103 (January 2020): 77–84. https://doi.org/10.1016/j.envsci.2019.10.002.

‌“Here, we critically examine both the use of BECCS in mitigation scenarios and the decision making philosophy underlying the use of integrated assessment modelling to inform climate policy.“

LINK

#
Peer-reviewed Publications

Gertler, Charles G.; et al. 2020: “Weakening of the Extratropical Storm Tracks in Solar Geoengineering Scenarios.”

Gertler, Charles G., Paul A. O’Gorman, Ben Kravitz, John C. Moore, Steven J. Phipps, and Shingo Watanabe. 2020: “Weakening of the Extratropical Storm Tracks in Solar Geoengineering Scenarios.”[nbsp]Geophysical Research Letters. https://doi.org/10.1029/2020gl087348.

‌“Here, we first analyze climate model simulations from experiment G1 of the Geoengineering Model Intercomparison Project (GeoMIP), in which a reduction in incoming solar radiation balances a quadrupling of CO2. The Northern Hemisphere extratropical storm track weakens by a comparable amount in G1 as it does for increased CO2[nbsp]only. The Southern Hemisphere storm track also weakens in G1, in contrast to a strengthening and poleward shift for increased CO2.“

LINK

#
Calls

Call for Abstracts: Aerosol Approaches to Climate Engineering. Robert Dickinson Symposium (AMS100)

Deadline: 1. August 2019

„This joint session covers broad topics such as results from climate modeling, using analogs such as volcanic eruptions and ship tracks, and development of technology to actually implement solar geoengineering. Papers on the physics of climate engineering should be submitted to this joint session, and on ethical and governance issues related to climate engineering to the session „Ethics and governance of weather modification and geoengineering“ at the 22nd Conference on Planned and Inadvertent Weather Modification. Invited keynote speaker: Simone Tilmes (NCAR). Session Chair: Alan Robock (Rutgers University).“

LINK

#
Media

Science: A world without clouds? Hardly clear, climate scientists say

„Could the sheets of gray clouds that hang low over the ocean disappear suddenly in a warming world? Yes, if you believe a study published yesterday in Nature Geoscience—and the amplifying media coverage of it. If atmospheric carbon dioxide (CO2) levels triple—an unlikely, but not implausible scenario given past rates of human emissions—these stratocumulus clouds could vanish in a frightening feedback loop. Fewer of the cooling clouds would mean a warmer Earth, which in turn would mean fewer clouds, leading to an 8°C jump in warming—a staggering, world-altering change.“

LINK

#
Peer-reviewed Publications

Tilmes, Simone; et al. (2018): CESM1(WACCM) Stratospheric Aerosol Geoengineering Large Ensemble (GLENS) Project

Tilmes, Simone; Richter, Jadwiga H.; Kravitz, Ben; MacMartin, Douglas G.; Mills, Michael J.; Simpson, Isla R. et al. (2018): CESM1(WACCM) Stratospheric Aerosol Geoengineering Large Ensemble (GLENS) Project. In Bulletin of the American Meteorological Society. DOI: 10.1175/BAMS-D-17-0267.1.

„This paper describes the stratospheric aerosol geoengineering large ensemble (GLENS) project, which promotes the use of a unique model dataset, performed with the Community Earth System Model, with the Whole Atmosphere Community Climate Model as its atmospheric component (CESM1(WACCM)), to investigate global and regional impacts of geoengineering. The performed simulations were designed to achieve multiple simultaneous climate goals, by strategically placing sulfur injections at four different locations in the stratosphere, unlike many earlier studies that targeted globally averaged surface temperature by placing injections in regions at or around the equator.“

LINK

#
Peer-reviewed Publications

Oschlies, A. (2018): Bewertung von Modellqualität und Unsicherheiten in der Klimamodellierung

Oschlies, A. (2018): Bewertung von Modellqualität und Unsicherheiten in der Klimamodellierung. In: Janich N.; Rhein L. (Hg.): Unsicherheit als Herausforderung für die Wissenschaft: Peter Lang D. DOI: 10.3726/b14379

„The chapter discusses sources of uncertainties in climate models and their possible impacts on the model results. The three criteria “adequacy”, “consistency” and “representativeness” are suggested for a comprehensive assessment of the quality of climate models. The fit to data determines the model’s representativeness. For many climate variables, such as precipitation, cloudiness and the climate sensitivity, this has not significantly improved from the second-to-last to the last assessment report of the Intergovernmental Panel on Climate Change (IPCC).„

LINK

#
Peer-reviewed Publications

Li, Y.; et al. (2018): Climate model shows large-scale wind and solar farms in the Sahara increase rain and vegetation

Li, Y.; Kalnay, E.; Motesharrei, S.; Rivas, J.; Kucharski, F.; Kirk-Davidoff, D. et al. (2018): Climate model shows large-scale wind and solar farms in the Sahara increase rain and vegetation. In: Science 361 (6406), S. 1019–1022. DOI: 10.1126/science.aar5629.

„In this study, we used a climate model with dynamic vegetation to show that large-scale installations of wind and solar farms covering the Sahara lead to a local temperature increase and more than a twofold precipitation increase, especially in the Sahel, through increased surface friction and reduced albedo. The resulting increase in vegetation further enhances precipitation, creating a positive albedo–precipitation–vegetation feedback that contributes ~80% of the precipitation increase for wind farms. This local enhancement is scale dependent and is particular to the Sahara, with small impacts in other deserts.“

LINK

#
Peer-reviewed Publications

Bala, G.; et al. (2018): Solar Geoengineering Research in India

Bala, G.; Gupta, A. (2018): Solar Geoengineering Research in India. In: Bulletin of the American Meteorological Society. DOI: 10.1175/BAMS-D-18-0122.1.

„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. The recent funding initiative by the Department of Science and Technology, the main funding agency for scientific research in India, in support of geoengineering modeling research and its efforts to bring natural, social and political scientists together for an evaluation solar geoengineering at meetings are also discussed. Finally, the directions for future scientific research into geoengineering in India are also discussed.“

LINK

#