Lyatt Jaeglé‘s research group is focused on  understanding the chemistry of the natural atmosphere and its perturbations by human activities. Current research projects examine emissions, chemical transformation, and transport of gases and particles in the Earth’s atmosphere on regional to global scales. We use global models to analyze ground-based, ship, aircraft, and satellite observations.

Here are some of our current and recent projects:

• stratosphere-troposphere interactions from satellite limb measurements: STRIVE (a new satellite mission concept submitted to NASA’s 2023 Earth System Explorers Program)
• origin of perchlorate in the Earth’s atmosphere
• pollution in the northeast United States
• sources and chemistry of sea salt particles in the Arctic and Antarctic
• long-range transport of pollution
• biogeochemical cycling of mercury in the atmosphere and ocean
• extratropical cyclones and atmospheric composition

Links to recent research publications:

Stratospheric gas-phase production alone cannot explain observations of atmospheric perchlorate on Earth, Chan et al., GRL, 2023

The role of midlatitude cyclones in the emission, transport, production, and removal of aerosols in the Northern Hemisphere, Robinson, Jaeglé & Oman, JGR, 2023

Impact of changing Arctic sea ice extent, sea ice age, and snow depth on sea salt aerosol from blowing snow and the open ocean for 1980-2017, Confer et al., JGR, 2023

Widespread pollution from secondary sources of organic aerosols during winter in the northeastern United States, Shah et al., PNAS, 2018