A study of aerosol climatology in cloud-free and cloudy conditions and the impact of cirrus on direct aerosol radiative effect

Yulan Hong1, Larry Di Girolamo2, Stephen W Nesbitt2, Robert Rauber2, Greg M McFarquhar3, Sebastian Schmidt4, Chris A Hostetler5, Richard Anthony Ferrare5 and Anthony Bucholtz6, (1)University of Illinois at Urbana-Champaign, Department of Atmospheric Sciences, Urbana, IL, United States, (2)University of Illinois at Urbana-Champaign, Department of Atmospheric Sciences, Urbana, United States, (3)Cooperative Institute for Severe and High-Impact Weather Research and Operations, University of Oklahoma, Norman, OK, United States, (4)University of Colorado at Boulder, Laboratory for Atmospheric and Space Physics, Boulder, CO, United States, (5)NASA Langley Research Center, Hampton, United States, (6)Navel Postgraduate School, Marina, United States