Atmospheric Chemistry Program Seminar
Organic nitrogen chemistry: Recent results and future projects
"Organic nitrogen is a ubiquitous atmospheric component that affects biogeochemistry, air quality, and climate. Assessing the impact of organic nitrogen on these processes remains challenging because traditional measurement techniques have lacked the sensitivity and chemical resolution to characterize the speciation and chemistry of organic nitrogen. Here, I will discuss measurements made with protonated ethanol cluster chemical ionization time-of-flight mass spectrometry during the Holistic Interactions of Shallow Clouds, Aerosols, and Land-Ecosystems (HI-SCALE) campaign at the Southern Great Plains research station in Lamont, Oklahoma. As the site is located in an agricultural region, reduced nitrogen compounds are prevalent. I will present measurements of novel compounds including imines and urea and will discuss the sources and sinks of compounds at this site. Finally, I will discuss research opportunities in our group."
Small molecules in the Anthropocene: Wildfires, Oceans and Iodine
"The Volkamer group develops advanced optical instrumentation (in situ and remote sensing) to measure small molecules and aerosols that are relevant to public health and climate. We seek to better quantify and understand emissions of small molecules, total carbon, and aerosols from natural and managed ecosystem (e.g., wildfires, oil & natural gas, ocean surface, UTLS), and develop a molecular level understanding of the fundamental processes that affect their chemical transformations and sinks (e.g., new particle formation). Opportunities for graduate research exist in the areas of 1) field measurements using research aircraft (i.e., BB-FLUX, TI3GER projects), 2) laboratory experiments of nanoparticle formation and growth (incl. at CLOUD/CERN), and 3) instrumentation to study carbon closure, and retrieve aerosol optical properties."
Please note that this seminar starts at 12:40 PM. Contact Anne.Handschy@colorado.edu for Zoom link.