Smithlab
We study the optical properties and chemistry of atmospheric aerosols.
We study the optical properties and chemistry of atmospheric aerosols.
The Smithlab studies how aerosol particles in the atmosphere interact with sunlight. We design novel instruments, carry out laboratory experiments, sample ambient air and develop machine learning models for predicting aerosol optical properties. What we learn about how particles scatter and absorb light helps improve how models predict future climate, how satellites make measurements through the atmosphere and how air quality is impacted.
February 2025
Congratulations to Zach McQueen who was recently awarded a NASA Post-doctoral Researcher Fellowship. Zach will be working at the NASA Goddard Space Flight Center where will be conducting research on Titan's atmosphere.
October 2024
Ryan, John and Geoff attended the annual meeting of the American Association for Aerosol Research (AAAR) where they each gave platform presentations: Ryan on interpreting the aethalometer DualSpot correction, John on coated black carbon particle analysis, and Geoff on clustering based on aerosol optical properties.
August 2024
Congratulations to Chase, Zach, Ryan and all of our G-WISE collaborators on the publication of their paper, entitled "Brown Carbon Emissions from Biomass Burning under Simulated Wildfire and Prescribed-Fire Conditions".
August 2024
Congratulations to Zach and all of our G-WISE collaborators on the publication of our paper, entitled "Optical Properties of Biomass Burning Aerosols from Simulated Wildfires and Prescribed Fires with Representative Fuel Beds from the Southeast United States".
July 2024
Sun explored how mass is lost and the UV-vis spectrum changes when humic acids are exposed to UV light. Read our paper: "Photolytic Mass Loss of Humic Substances Measured with a Quartz Crystal Microbalance".
July 2024
Congratulations to Sun and all of our G-WISE collaborators on the publication of our paper, entitled "Aqueous photolysis of water-soluble brown carbon from simulated prescribed and wildfire biomass burning".
June 2024
Congratulations to Zach, who defended his thesis entitled "Optical Characterization of Aerosol Particles using Ambient, in-situ Measurements and Biomass Burning Simulations".
June 2024
The Smithlab participated in the aerosol sampling campaign at the Skidaway Institute of Oceanography led by Prof. Amanda Frossard (UGA) and her group. Aerosol optical properties of marine and continental air masses were sampled.
May 2024
Congratulations to Sun, who defended his thesis entitled "Characterization of Light Interaction with Atmospheric Aerosol: Scattering and Photo-reaction".
October 2023
Zach and Ryan each presented talks at the AAAR meeting held in Portland, OR. Zach described his research on the optical properties of biomass burning aerosols produced under both wildfire and prescribed burning conditions from the G-WISE campaign. Ryan discussed his latest work on correcting the loading compensation of DualSpot aethalometers.