AAAR 33rd Annual Conference
October 20 - October 24, 2014
Rosen Shingle Creek
Orlando, Florida, USA
Abstract View
Minimizing Cloud Shattering Effects: Comparing Aerosol Measurements Made during the 2013 SEAC4RS Campaign Behind Two Types of Airborne Sampling Inlets
KENNETH THORNHILL, Michael Shook, Luke Ziemba, Bruce Anderson, Andreas Beyersdorf, Gao Chen, Edward Winstead, Richard Moore, SSAI
Abstract Number: 102 Working Group: Air Quality and Climate in the Southeast US: Insights from Recent Measurement Campaigns
Abstract In the summer of 2013 the Study of Emissions and atmospheric Composition, Clouds, and Climate Coupling by Regional Surveys (SEAC4RS) field campaign was conducted primarily over the Southeast United States. Among its goals was to characterize the aerosols associated in and around clouds throughout the troposphere. As part of the campaign the NASA DC-8 was instrumented with an extensive suite of aerosol and gas-phase in-situ sensors. This study will look at comparing the responses of two aerosol inlets that were used during the SEAC4RS 1) the Clarke Solid Diffuser Inlet and 2) Clarkson's High Cross-flow Aerosol Sampler (Hi-CAS). Typically in-cloud environments have presented a problem for aerosol measurements due to artifacts created from cloud shattering. As a result in-cloud data is often filtered out of archived datasets. An interstitial inlet such as the Clarkson Hi-CAS shows promise in minimizing cloud-shattering effects allowing for representative data to be collected within clouds. This study will use a suite of aerosol size distributions, condensation particle counters, and optical measurements to compare the response of the two inlets in clear air and in both ice and liquid cloud regimes from data collected during the SEAC4RS campaign.