Towards development of a climatology of cloud condensation nuclei at the ARM Southern Great Plains site

 
Poster PDF

Authors

Manasi Mahish — Texas A&M University
Don R. Collins — University of California, Riverside
Anne Jefferson — NOAA- Earth System Research Laboratory
Peter Marinescu — Colorado State University
Ezra Ezra Levin Levin — Colorado State University
Paul J. DeMott — Colorado State University
Sonia Kreidenweis — Colorado State University

Category

General topics – Aerosols

Description

Multiple years of aerosol data have been collected from routine observations at the ARM Southern Great Plains (SGP) site, along with specialized data from a number of intensive studies. More recently, the suite of routine measurements has included PM1 composition and hygroscopicity via a tandem differential mobility analyzer. These two measurements complement the long-term measurements of cloud condensation nuclei (CCN), and can be used to develop detailed CCN spectra that extrapolate to lower and higher supersaturations. We present some initial results from a new effort to produce CCN spectra by merging these observations. In addition to providing guidance for modeling efforts, the merged spectra provide insights to seasonal and interannual variations in aerosol types and sources impacting SGP.