[Eoas-seminar] MET Seminar Tuesday December 2 - Dr. Katherine Ackerman (University of Hawai‘i at Mānoa and University of Notre Dame)

[eoas-seminar at lists.fsu.edu]

Dear all,

Please join us for our last Meteorology seminar of the semester, which is next Tuesday December 2 at 3 PM, given by Dr. Katherine Ackerman, an NSF Postdoctoral Research Fellow between University of Hawai‘i at Mānoa and University of Notre Dame. She will present "A Holistic Approach to Understanding In Situ Observations of Giant Sea Salt Aerosol Globally” (abstract below)

Dr. Ackerman will present over Zoom but we will gather together in EOA 1044. A zoom link is available for those with approved work off-campus or a medical excuse. Please contact Allison Wing (awing at fsu.edu<mailto:awing at fsu.edu>) for the Zoom link. If you would like to meet with the speaker over Zoom, also contact Allison Wing. Dr. Ackerman’s current research combines in situ observations of sea salt aerosol with large eddy simulations to understand the mechanisms dictating the transport of these giant particles throughout the boundary layer.

DATE: Tuesday December 2
TIME: 3-4 PM, please join early for refreshments
LOCATION: EOA 1044
SPEAKER: Dr. Katherine Ackerman

TITLE: A Holistic Approach to Understanding In Situ Observations of Giant Sea Salt Aerosol Globally

ABSTRACT: Giant sea salt aerosol (GSSA; dry radius > 1 µm) plays a critical role in Earth’s radiative budget, aerosol–cloud interactions, and potentially warm-rain initiation, yet major uncertainties remain in its production, transport, and global distribution. Historically, these knowledge gaps have been driven by limited access to affordable, high-resolution observational tools capable of resolving the largest sea-salt particles in sufficient detail. Recent advances in low-cost in-situ instrumentation have expanded the capacity to measure GSSA size distributions (GSSA-SDs) across a wider range of field environments, including regions where traditional instruments would have been prohibitively expensive or logistically impractical. Increased observations combined with reanalysis tools and models have led to novel insights of these giant aerosol concentrations globally, as well as important assessments of their representation in models. Overall, instantaneous environmental conditions alone can misrepresent the processes controlling GSSA abundance; instead, air-mass history and cumulative exposure to surface wind and ocean state exert strong influences on the concentrations measured at a given time. This talk focuses on 1) the importance of accessible aerosol observations, as well as 2) some key nuances of interpreting these field observations within a broader environmental context.

We look forward to seeing you there!


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Allison A. Wing, Ph.D.

Werner A. and Shirley B. Baum Associate Professor

Department of Earth, Ocean and Atmospheric Science

Florida State University

awing at fsu.edu<mailto:awing at fsu.edu>




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