AAAR 37th Annual Conference October 14 - October 18, 2019 Oregon Convention Center Portland, Oregon, USA
Abstract View
Deriving CCN from High-Spectral Resolution Lidar Measurements of Aerosol Extinction and Backscatter
RICHARD MOORE, Kyle Dawson, Sharon P. Burton, Snorre Stamnes, Richard Ferrare, Chris Hostetler, Luke Ziemba, Ewan Crosbie, Edward Winstead, Yohei Shinozuka, Kenneth Thornhill, Bruce Anderson, NASA Langley Research Center
Abstract Number: 914 Working Group: Aerosols, Clouds and Climate
Abstract Airborne field campaigns provide the means to develop and test correlations between CCN number concentrations and remote sensing observations of aerosol optical properties. There have been a number of such assessments in recent years (e.g., Andreae, 2009; Liu et al., 2014; Shinozuka et al., 2015), each with varying degrees of success. Here, we evaluate relationships between aerosol extinction and backscatter coefficients and in situ CCN spectra for a case study in the remote North Atlantic. It is found that in situ measurements reasonably capture aerosol loading on a number basis, but substantially under-sample the coarse mode aerosol that dominate the aerosol optical properties. Methods for unraveling this complexity to remotely sense the submicron aerosol fraction relevant for CCN will be discussed.