Reviewer 2 and Walker Lee get into the guts of this paper in a lively discussion. Walker's research breaks new ground in stratospheric aerosol geoengineering, raising interesting questions about a more refined technique that potentially creates surprising socio-economic effects.  The paper is in review, full citation is:

Lee, W., MacMartin, D., Visioni, D., and Kravitz, B.: Expanding the Design Space of Stratospheric Aerosol Geoengineering to Include Precipitation-Based Objectives and Explore Trade-offs, Earth Syst. Dynam. Discuss., https://doi.org/10.5194/esd-2020-58, in review, 2020

As always comments and suggestions are welcome @geoengineering1 and clare_nomad_geo

(reissue of this previously released episode for technical reasons)