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Data from: Diminished efficacy of regional marine cloud brightening in a warmer world

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Data from: Diminished efficacy of regional marine cloud brightening in a warmer world

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1 digital object.

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Wan, Jessica S.; Chen, Chih-Chieh-Jack; Tilmes, Simone; Luongo, Matthew T.; Richter, Jadwiga H.; Ricke, Katharine (2024). Data from: Diminished efficacy of regional marine cloud brightening in a warmer world. UC San Diego Library Digital Collections. https://doi.org/10.6075/J0WW7HW0

Description

Marine cloud brightening (MCB) is a geoengineering proposal to cool atmospheric temperatures and reduce climate change impacts. As large-scale approaches to stabilize global mean temperatures pose governance challenges, regional interventions may be more attractive near term. Here, we investigate the efficacy of regional MCB in the North Pacific to mitigate extreme heat in the Western U.S. Under present-day conditions, we find MCB in the remote mid-latitudes or proximate subtropics reduces the relative risk of dangerous summer heat exposure by 55% and 16%, respectively. However, the same interventions under mid-century warming minimally reduce or even increase heat stress in the Western U.S. and across the world. This loss of efficacy may arise from a state-dependent response of the Atlantic Meridional Overturning Circulation to both anthropogenic warming and regional MCB. Our result demonstrates a risk in assuming that interventions effective under certain conditions will remain effective as the climate continues to change.

Creation Date
  • 2022-04 to 2023-12
Date Issued
  • 2024
Authors
Advisor
Funding

National Center for Atmospheric Research Early Career Faculty Innovator Program Cooperative Agreement Number 1755088
National Defense Science and Engineering Graduate Fellowship Program.

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Language
  • English
Identifier

Identifier: Chih-Chieh-Jack Chen: https://orcid.org/0000-0002-4819-2510

Identifier: Jadwiga H. Richter: https://orcid.org/0000-0001-7048-0781

Identifier: Jessica S. Wan: https://orcid.org/0000-0003-3757-6436

Identifier: Katharine Ricke: https://orcid.org/0000-0002-2780-7213

Identifier: Matthew T. Luongo: https://orcid.org/0000-0002-2996-7579

Identifier: Simone Tilmes: https://orcid.org/0000-0002-6557-3569

Related Resources

    Primary associated publication

    • Wan, Jessica S.; Chen, Chih-Chieh-Jack; Tilmes, Simone; Luongo, Matthew T.; Richter, Jadwiga H.; Ricke, Katharine. Diminished efficacy of regional marine cloud brightening in a warmer world. Nature Climate Change. (2024).

    Source data

    • Center for International Earth Science Information Network - CIESIN - Columbia University. (2018): Gridded Population of the World, Version 4 (GPWv4): Population Count, Revision 11. NASA Socioeconomic Data and Applications Center (SEDAC). Accessed 21 October 2022. https://doi.org/10.7927/H4JW8BX5

    • Gao, J. (2020): Global 1-km Downscaled Population Base Year and Projection Grids Based on the Shared Socioeconomic Pathways, Revision 01. NASA Socioeconomic Data and Applications Center (SEDAC). Accessed 4 January 2023. https://doi.org/10.7927/q7z9-9r69

    • Hersbach, H., Bell, B., Berrisford, P., Biavati, G., Horányi, A., Muñoz Sabater, J., Nicolas, J., Peubey, C., Radu, R., Rozum, I., Schepers, D., Simmons, A., Soci, C., Dee, D., Thépaut, J-N. (2023): ERA5 monthly averaged data on single levels from 1940 to present. Copernicus Climate Change Service (C3S) Climate Data Store (CDS). Accessed on 20 March 2023. https://doi.org/10.24381/cds.f17050d7

    • W. B. Rossow, A. Walker, V. Golea, K. R. Knapp, A. Young, A. Inamdar, B. Hankins, NOAA’s Climate Data Record Program, Climate Data Record Program (2016): International Satellite Cloud Climatology Project Climate Data Record, H-Series Basic HGM. NOAA Natl. Cent. Environ. Inf. Accessed 24 March 2023. https://doi.org/10.7289/V5QZ281S

    Software

    Collection image

    • Image source: Jessica Wan. "Change in Western North America summer heat exposure to marine cloud brightening."

Data from: Diminished efficacy of regional marine cloud brightening in a warmer world
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