Personal profile
Biography
Walker uses climate models to study climate intervention: deliberate, large-scale modifications to the climate to offset the impacts of global warming, usually by reflecting sunlight to cool the planet. At NSF NCAR, Walker designs simulations to evaluate the benefits and risks of different intervention strategies, conducts those simulations with NCAR's climate model (the CESM), and coordinates with other modeling centers to run model intercomparisons.
Research interests
- Climate intervention ("climate engineering", "solar radiation modification/management", "geoengineering")
- Climate modeling
- Stratospheric aerosol injection
- Marine cloud brightening
Related documents
Education/Academic qualification
Mechanical Engineering, BS, Brown University
Mechanical Engineering, PhD, Cornell University
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Collaborations and top research areas from the last five years
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The global climate response to High-Latitude Low-Altitude Stratospheric Aerosol Injection (HiLLA-SAI)
Duffey, A., Lee, W., Wheeler, L., Irvine, P., Wagman, B., Henry, M., Visioni, D., Tsamados, M. & MacMartin, D., Apr 16 2026, In: Earth System Dynamics. 17, 2, p. 353-385 33 p.Research output: Contribution to journal › Article › peer-review
Open Access -
Climate Impact of Marine Cloud Brightening Solar Climate Intervention Under a Susceptibility-Based Strategy Simulated by CESM2
Chen, C. C., Richter, J. H., Lee, W. R., Tye, M., MacMartin, D. G. & Kravitz, B., Jan 28 2025, In: Journal of Geophysical Research: Atmospheres. 130, 2, 18 p., e2024JD041245.Research output: Contribution to journal › Article › peer-review
Open Access9 Scopus citations -
Finalizing Experimental Protocols for the Geoengineering Model Intercomparison Project (GeoMIP) Contribution to CMIP7
Visioni, D., Robock, A., Roberts, K. E., Lee, W., Henry, M., Duffey, A., Hirasawa, H., Chegwidden, O. & Sipra, H., Oct 2025, In: Bulletin of the American Meteorological Society. 106, 10, E2029.Research output: Contribution to journal › Comment/debate
5 Scopus citations -
First Simulations of Feedback Algorithm-Regulated Marine Cloud Brightening
Lee, W. R., Chen, C. C., Richter, J., MacMartin, D. G. & Kravitz, B., Apr 16 2025, In: Geophysical Research Letters. 52, 7, e2024GL113728.Research output: Contribution to journal › Article › peer-review
Open Access3 Scopus citations -
Large-Scale Climate Interventions: Carbon Dioxide Removal and Solar Radiation Management
Lee, W. R., MacMartin, D. & Borth, A., Jan 1 2025, Climate Change: A Geoscience Perspective. Springer Science+Business Media, p. 435-471 37 p.Research output: Chapter in Book/Report/Conference proceeding › Chapter › peer-review
Open Access
Datasets
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Marine cloud brightening climate intervention is simulated by CESM2 under a susceptibility-based strategy under SSP2-4.5
Chen, C.-C. (Creator), Richter, J. (Creator), Lee, W. (Creator), Tye, M. (Creator), MacMartin, D. (Contributor) & Kravitz, B. (Contributor), NSF NCAR - National Center for Atmospheric Research, Feb 13 2024
DOI: 10.5065/MRH9-B809
Dataset