Comparisons of cirrus cloud properties between polluted and pristine air based on in-situ observations from the NSF HIPPO, EU INCA and NASA ATTREX campaigns

Minghui Diao, San Jose State University, Department of Meteorology and Climate Science, San Jose, CA, United States, Ulrich Schumann, German Aerospace Center DLR Oberpfaffenhofen, Institute of Atmospheric Physics, Oberpfaffenhofen, Germany, Jorgen B Jensen, University Corporation for Atmospheric Research, Boulder, CO, United States and Andreas Minikin, German Aerospace Center (DLR), Institute of Atmospheric Physics, Oberpfaffenhofen, Germany