1200 Climate Effects of Geoengineering Using Cloud Seeding and Stratospheric Aerosols

Saturday, February 20, 2010: 9:30 AM
Room 6F (San Diego Convention Center)
Philip J. Rasch , Pacific Northwest National Laboratory, Richland, WA
I will discuss two geoengineering strategies: 1) production of aerosols in the middle atmosphere; and 2) increasing the reflectivity of marine clouds near the surface. A few results will be shown from coupled climate model simulations, suggesting that the geoengineering strategies can cool the planet, and increase sea ice. I will identify other possible consequences to the climate system as well, suggesting that there will be tradeoffs resulting from geoengineering. Much more research is needed to understand these tradeoffs.