On Tuesday, April 29, from 3:30 to 4:30 p.m. MT, join NSF NCAR’s Earth Observing Laboratory (EOL) and Atmospheric Chemistry Observations and Modeling (ACOM) lab for a seminar featuring Michael Lawler of CIRES/NOAA. The talk is entitled “Meteoric-Sulfuric Particles Formed in the Winter Polar Vortex: Their Size, Composition, and Fate.”

Understanding stratospheric aerosol is important for predicting the effects of perturbations like volcanic eruptions, as well as efforts to potentially cool the climate. Recent research also shows spacecraft reentry events can deposit metals in these particles. In this talk, Dr. Lawler will discuss the composition and fate of aerosols originating in the Northern Hemisphere's winter polar vortex, based on measurements from the NASA WB-57 platform. The particles, containing sulfuric acid and meteoric/spacecraft metals, are smaller than typical stratospheric particles and distribute these metals across the stratosphere.

This seminar is hybrid; you may watch the live webcast or attend in-person. The event will be held at the NSF NCAR-Foothills Laboratory, 3450 Mitchell Lane, FL2-1022, Large Seminar Auditorium. Refreshments will be served at 3:15 p.m. MT. Participants watching the live webcast may ask questions via Slido.

For more information, see the flyer, or contact organizers.