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:20260917T034652Z
DESCRIPTION:Observing the Sea Spray Aerosol Size Distribution on the Windward O'ahu Coastline\n\nMr. Chung Taing\n\nMasters Candidate\n\nDepartment of Atmospheric Sciences, S.O.E.S.T.\n\nUniversity of Hawaii at Manoa\n\nDate:                Thursday, March 12, 2020\n\nTime:                9:00 a.m.\n\nLocation:          IPRC Conference Room, POST 414\n\nAbstract:\n\nSea spray aerosol (SSA) play a significant role in the local climatology of coastal areas by acting as giant cloud condensation nuclei (GCCN), which can accelerate warm rain initiation due to their hygroscopicity. However, there is great uncertainty in SSA size and quantity in the atmosphere. In-situ observations of GCCN are particularly limited because of their low concentration and relatively large sizes. At NCAR, the Giant Nucleus Impactor (GNI) was developed to observe giant aerosol particles.\n\nOptical microscope observations are made of wetted salt particles impacting onto polycarbonate slides exposed to ambient airflow in marine environments. With the GNI in mind, we developed a new, low-cost, and accessible method for sampling large SSA in the marine boundary layer. Using 3D printing and Arduino microcontrollers and sensors, we designed and built a SSA sampler named the “mini-GNI” that can expose slides to capture large and wet SSA.\n\nThe mini-GNI can be attached to a kite string, allowing for sampling at multiple altitudes simultaneously. With the mini-GNI deployed on a kite platform, we captured SSA size distributions and examined what environmental variables influence the SSA size distribution in the atmosphere on the windward side of Oahu. We found that SSA concentration is not correlated with instantaneous wind speed. Instead, positive correlations were identified between SSA concentration and wave height and wind history. These results suggest that the SSA size distribution in Hawaii is locally driven and is dependent on different variables than the SSA size distribution over the open ocean.
DTEND;TZID=Pacific/Honolulu:20200312T220000Z
DTSTAMP:20260917T034652Z
DTSTART;TZID=Pacific/Honolulu:20200312T190000Z
LAST-MODIFIED:20260917T034652Z
LOCATION:IPRC Conference Room, POST 414
PRIORITY:5
SEQUENCE:0
SUMMARY;LANGUAGE=en-us:Atmospheric Sciences Master's Defense
TRANSP:OPAQUE
UID:178965281237071web-support-l@lists.hawaii.edu
END:VEVENT
END:VCALENDAR