BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//ZContent.net//ZapCalLib 1.0//EN
CALSCALE:GREGORIAN
METHOD:PUBLISH
BEGIN:VEVENT
SUMMARY:Biosphere-Atmosphere Exchange of Organic Acids
LOCATION:Chemistry A101
TZID:America/Denver
DTSTART:20184101T000000
UID:2026-04-22-18-49-09@natsci.colostate.edu
DTSTAMP:20260422T184909
Description:Organic acids are numerous and pervasive in Earth’s lower atm
 osphere. They contribute to ozone formation chemistry as well as the produ
 ction of secondary organic aerosols\, thus impacting both human and ecosys
 tem health. Despite their relevance\, organic acid budgets in the atmosphe
 re remain poorly understood. Models underestimate measured ambient concent
 rations of many organic acids\, suggesting an underestimation of sources\,
  an overestimation of sinks\, or a combination of both. The limited availa
 ble measurements of organic acid sources and sinks is a likely cause of mo
 del-measurement discrepancies\, coupled to a bias towards summer field cam
 paigns.\n\nMy research seeks to improve atmospheric models by directly mea
 suring gaseous organic acid sources and sinks over a Colorado ponderosa pi
 ne forest. To this end\, we deployed a Chemical Ionization Mass Spectromet
 er and a 3-dimensional sonic anemometer to make fast\, sensitive measureme
 nts of organic acid vertical fluxes during five\, seasonally representativ
 e campaigns as part of the Seasonal Particles in Forests Flux studY (SPiFF
 Y). We observed seasonality in both mixing ratios and fluxes for formic\, 
 propionic\, methacrylic\, butyric\, and valeric acids. Large upward fluxes
  of formic acid occurred during summer 2015\, summer 2016\, and fall 2016.
  Air temperature correlated exponentially with acid fluxes during each sea
 son. We aim to use these data to develop parameterizations that will impro
 ve models of organic acid biosphere-atmosphere exchange and subsequently i
 mprove our understanding of ozone and secondary organic aerosol budgets. 4
 :00 pm
END:VEVENT
END:VCALENDAR