Geoengineering by stratospheric SO2 injection: results from the Met Office HadGEM2 climate model and comparison with the Goddard Institute for Space Studies ModelE 1Met Office Hadley Centre, Exeter, UK
2Department of Environmental Sciences, Rutgers University, New Brunswick, NJ, USA
Received: 25 Feb 2010 – Published in Atmos. Chem. Phys. Discuss.: 22 Mar 2010 Abstract. We examine the response of the Met Office Hadley Centre's HadGEM2-AO climate
model to simulated geoengineering by continuous injection of SO2 into
the lower stratosphere, and compare the results with those from the Goddard
Institute for Space Studies ModelE. Despite the differences between the
models, we find a broadly similar geographic distribution of the response to
geoengineering in both models in terms of near-surface air temperature
and mean June–August precipitation. The simulations also suggest that
significant changes in regional climate would be experienced even if
geoengineering was successful in maintaining global-mean temperature
near current values, and both models indicate rapid warming if
geoengineering is not sustained.
Revised: 16 Jun 2010 – Accepted: 17 Jun 2010 – Published: 05 Jul 2010
Citation: Jones, A., Haywood, J., Boucher, O., Kravitz, B., and Robock, A.: Geoengineering by stratospheric SO2 injection: results from the Met Office HadGEM2 climate model and comparison with the Goddard Institute for Space Studies ModelE, Atmos. Chem. Phys., 10, 5999-6006, doi:10.5194/acp-10-5999-2010, 2010.