Changes in upper troposphere/lower stratosphere aerosol since 1980 in the Goddard Earth Observing System (GEOS-5) model

Valentina Aquila, American University, Department of Environmental Science, Washington, DC, United States; NASA GSFC, Greenbelt, United States, Peter Richard Colarco, NASA Goddard Space Flight Center, Greenbelt, MD, United States and Luke Oman, NASA Goddard Space Flight Center, Greenbelt, United States