1. Mechanical and Aerospace Engineering; Cornell University; Ithaca NY USA
2. College of Global Change and Earth System Science; Beijing Normal University; Beijing China
3. Atmospheric Sciences and Global Change Division; Pacific Northwest National Laboratory; Richland WA USA
4. Atmospheric Chemistry, Observations, and Modeling Laboratory; National Center for Atmospheric Research; Boulder CO USA
5. Climate and Global Dynamics Laboratory; National Center for Atmospheric Research; Boulder CO USA