Yifan Guan¹, Gretchen Keppel-Aleks², Galen A McKinley³ and Amanda R Fay³, (1)University of Michigan, Climate and Space Sciences and Engineering, Ann Arbor, MI, United States, (2)University of Michigan Ann Arbor, Climate and Space Sciences and Engineering, Ann Arbor, MI, United States, (3)Lamont -Doherty Earth Observatory of Columbia University, Palisades, NY, United States