AAAR 36th Annual Conference October 16 - October 20, 2017 Raleigh Convention Center Raleigh, North Carolina, USA
Abstract View
Chemical and Biological Analysis of Cloud-Water in Marine Boundary Layer Clouds
EWAN CROSBIE, Luke Ziemba, Richard Moore, Taylor Shingler, Michael Shook, Kenneth Thornhill, Edward Winstead, Hossein Dadashazar, Alex MacDonald, Armin Sorooshian, Bruce Anderson, NASA
Abstract Number: 611 Working Group: There Must be Something in the Water: Cloud, Fog and Aerosol Aqueous Chemistry for Aerosol Production
Abstract Direct measurements of cloud water from airborne platforms provide a means to help understand aqueous chemistry and biological activity within clouds. However, collection of cloud water on an airplane presents a number of sampling challenges associated with the removal of the cloud water from the air with high efficiency will avoiding contamination from interstitial aerosols and gases.
A new axial cyclone cloud-water collector (AC3) has been developed and tested during airborne field deployments on the NASA C-130 and the Center for Interdisciplinary Remote Piloted Aircraft Studies (CIRPAS) Twin Otter. On the Twin-Otter, the AC3 was integrated alongside a slotted-rod cloud-water collector, which has been used for several decades for cloud-water collection but is unsuitable for pressurized (or high speed) aircraft. We present results comparing AC3 and the slotted-rod from cloud-water samples collected during the Fog and Stratocumulus Evolution (FASE) campaign, which comprised flights in marine boundary layer clouds near California.
We also present results of multiple collaborative chemical and biological analysis of clouds measured during the North Atlantic Aerosols and Marine Ecosystems Study (NAAMES), which was focused on the sub-polar North Atlantic (45-55N, 35-50W) in May and September.