Celine Bonfils¹, Benjamin D Santer², John C Fyfe³, Katherine Marvel⁴, Thomas J Phillips¹ and Susan R H Zimmerman⁵, (1)Lawrence Livermore National Laboratory, Livermore, CA, United States, (2)LLNL, Livermore, CA, United States, (3)Environment Canada, Canadian Centre for Climate Modeling and Analysis, Victoria, BC, Canada, (4)NASA Goddard Institute for Space Studies, New York, United States, (5)Lawrence Livermore Nat''l Lab, Livermore, CA, United States