Delphine Farmer (CSU)

Speaker: 
Delphine Farmer (CSU)
Date: 
Monday, November 8, 2021 - 12:00pm to 1:00pm
Location: 
Virtual

Masters of Their Fate: Revisiting Atmospheric Particle Dry Deposition and Lifetime

The lifetime of particles in the atmosphere is driven by wet and dry deposition - yet these components are exceptionally poorly understood. Few observational constraints on particle deposition are available.  To this end, we collected measurements of size-resolved particle dry deposition using the eddy covariance technique coupled to optical particle measurements over a forest and grassland site with on-going measurements over the Arctic tundra. These observations enable us to constrain parameterizations of particle dry deposition, and collaborate with modeling groups to consider the role of deposition on aerosol concentration and radiative effects. We also collected black carbon eddy covariance flux measurements and wet deposition samples over the grassland site to differentiate between wet and dry deposition, and consider the impacts of these processes on aerosol lifetime.

About this Series:

The PAOC Colloquium [PAOCC] is a weekly interdisciplinary seminar series that brings together the whole PAOC community. Seminar topics include all research concerning the physics, chemistry, and biology of the atmospheres, oceans and climate, but also talks about e.g. societal impacts of climatic processes. The seminars take place on Monday from 12-1pm. Besides the seminar, individual meetings with professors, post-docs, and students are arranged. Contact: paoc-colloquium-comm@mit.edu.