BEGIN:VCALENDAR
PRODID:-//University of Hawaii//UH Events Calendar//EN
VERSION:2.0
METHOD:PUBLISH
BEGIN:VTIMEZONE
TZID:Pacific/Honolulu
BEGIN:STANDARD
TZOFFSETFROM:-1000
TZOFFSETTO:-1000
END:STANDARD
END:VTIMEZONE
BEGIN:VEVENT
CLASS:PUBLIC
CREATED:20260307T185226Z
DESCRIPTION:“Analysis of African Biomass Burning Aerosol Over the South East Atlantic and its Interaction with Stratocumulus Clouds during ORACLES 2016-2018”\n\nDuring NASA ORACLES 2016-2018 airborne missions, biomass burning (BB) advected from the African continent out over the South East Atlantic was intensively studied to better understand the role of BB aerosol in the regional radiation budget but also to discern its effect from natural aerosol on underlying Stratocumulus (Sc) clouds in the marine boundary layer (MBL). Because of its particle size and vast quantities BB aerosol once entrained into the MBL are highly effective as cloud condensation nuclei (CCN) impacting cloud microphysical properties and as such the Sc deck's radiative budget.\n\nThis work identifies characteristic in-plume size resolved aerosol physiochemistry observed during the campaigns and compares these results to MBL aerosol observations and adjacent Sc cloud properties such as the cloud droplet number concentration.\nAdditionally, aerosol measurements were obtained in cloud using a Counterflow Virtual Impactor (CVI) inlet. Employing the CVI cloud droplets are inertially separated from the air and dried in-situ en-route to the aerosol instrumentation. This allows us to study particles that were actually activated in the clouds. These CVI data reveal episodic high supersaturation events activating particles in the Aitken mode range. The data also provide insight into mechanisms of precipitation scavenging suggesting the preferred removal of more hygroscopic aerosol in drizzling Sc clouds.\n
DTEND;TZID=Pacific/Honolulu:20181116T021500Z
DTSTAMP:20260307T185226Z
DTSTART;TZID=Pacific/Honolulu:20181116T010000Z
LAST-MODIFIED:20260307T185226Z
LOCATION:Marine Science Buliding 114
PRIORITY:5
SEQUENCE:0
SUMMARY;LANGUAGE=en-us:Oceanography Seminar - Steffen Freitag
TRANSP:OPAQUE
UID:177294554634280web-support-l@lists.hawaii.edu
END:VEVENT
END:VCALENDAR