Could geoengineering research help answer one of the biggest questions in climate science?: GEOENGINEERING RESEARCH
Abstract
Anthropogenic aerosol impacts on clouds constitute the largest source of uncertainty in quantifying the radiative forcing of climate, and hinders our ability to determine Earth's climate sensitivity to greenhouse gas increases. Representation of aerosol–cloud interactions in global models is particularly challenging because these interactions occur on typically unresolved scales. Observational studies show influences of aerosol on clouds, but correlations between aerosol and clouds are insufficient to constrain aerosol forcing because of the difficulty in separating aerosol and meteorological impacts. In this commentary, we argue that this current impasse may be overcome with the development of approaches to conduct control experiments whereby aerosol particle perturbations can be introduced into patches of marine low clouds in a systematic manner. Such cloud perturbation experiments constitute a fresh approach to climate science and would provide unprecedented data to untangle the effects of aerosol particles on cloud microphysics and the resulting reflection of solar radiation by clouds. Here, the control experiments would provide a critical test of high-resolution models that are used to develop an improved representation aerosol–cloud interactions needed to better constrain aerosol forcing in global climate models.
- Authors:
-
- Univ. of Washington, Seattle, WA (United States)
- Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
- Ocean Conservancy, Washington, D.C. (United States)
- Publication Date:
- Research Org.:
- Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1390443
- Report Number(s):
- PNNL-SA-127932
Journal ID: ISSN 2328-4277
- Grant/Contract Number:
- AC05-76RL01830
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Earth's Future
- Additional Journal Information:
- Journal Volume: 5; Journal Issue: 7; Journal ID: ISSN 2328-4277
- Publisher:
- American Geophysical Union (AGU)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 54 ENVIRONMENTAL SCIENCES; 58 GEOSCIENCES; geoengineering; marine cloud brightening; clouds
Citation Formats
Wood, Robert, Ackerman, Thomas, Rasch, Philip J., and Wanser, Kelly. Could geoengineering research help answer one of the biggest questions in climate science?: GEOENGINEERING RESEARCH. United States: N. p., 2017.
Web. doi:10.1002/2017EF000601.
Wood, Robert, Ackerman, Thomas, Rasch, Philip J., & Wanser, Kelly. Could geoengineering research help answer one of the biggest questions in climate science?: GEOENGINEERING RESEARCH. United States. https://doi.org/10.1002/2017EF000601
Wood, Robert, Ackerman, Thomas, Rasch, Philip J., and Wanser, Kelly. Thu .
"Could geoengineering research help answer one of the biggest questions in climate science?: GEOENGINEERING RESEARCH". United States. https://doi.org/10.1002/2017EF000601. https://www.osti.gov/servlets/purl/1390443.
@article{osti_1390443,
title = {Could geoengineering research help answer one of the biggest questions in climate science?: GEOENGINEERING RESEARCH},
author = {Wood, Robert and Ackerman, Thomas and Rasch, Philip J. and Wanser, Kelly},
abstractNote = {Anthropogenic aerosol impacts on clouds constitute the largest source of uncertainty in quantifying the radiative forcing of climate, and hinders our ability to determine Earth's climate sensitivity to greenhouse gas increases. Representation of aerosol–cloud interactions in global models is particularly challenging because these interactions occur on typically unresolved scales. Observational studies show influences of aerosol on clouds, but correlations between aerosol and clouds are insufficient to constrain aerosol forcing because of the difficulty in separating aerosol and meteorological impacts. In this commentary, we argue that this current impasse may be overcome with the development of approaches to conduct control experiments whereby aerosol particle perturbations can be introduced into patches of marine low clouds in a systematic manner. Such cloud perturbation experiments constitute a fresh approach to climate science and would provide unprecedented data to untangle the effects of aerosol particles on cloud microphysics and the resulting reflection of solar radiation by clouds. Here, the control experiments would provide a critical test of high-resolution models that are used to develop an improved representation aerosol–cloud interactions needed to better constrain aerosol forcing in global climate models.},
doi = {10.1002/2017EF000601},
journal = {Earth's Future},
number = 7,
volume = 5,
place = {United States},
year = {Thu Jun 22 00:00:00 EDT 2017},
month = {Thu Jun 22 00:00:00 EDT 2017}
}
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