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January 30, 2019

Will Lassman and Jakob Lindaas receive Outstanding Student Paper Awards

Two Ph.D. students were chosen for Outstanding Student Paper Awards from the American Meteorological Society’s 21st Conference on Atmospheric Chemistry. Will Lassman, co-advised by Jeff Collett and Jeff Pierce, was rewarded for presenting his paper, “Methods of Estimating Deposition Using Atmospheric Concentration Measurements: Using Synthetic Observations Downwind of a CAFO to Quantify Ammonia Deposition.” Jakob Lindaas, advised by Emily Fischer, won for presenting his paper, “What Controls the Ratio of Primary Reduced and Oxidized Forms of Gas Phase Reactive Nitrogen in Young Wildfire Smoke?”

Lassman presented results from a study investigating novel measurement platforms for estimating ammonia dry deposition downwind of animal feedlots. He collaborated with Professors Jeff Pierce and Jeff Collett, as well as Professor Jay Ham (soil and crop science) and Azer Yalin (mechanical engineering) to demonstrate a method for estimating the fraction of total ammonia that dry deposits near a source by comparing the dilution of ammonia to that of methane, using Large Eddy Simulation to represent a turbulent atmosphere near the earth’s surface. They also demonstrate how to apply this technique by mounting the sensors on a UAV, or drone.

Lindaas presented preliminary results from his first analyses of WE-CAN campaign data. He is focused on understanding how much ammonia is in wildfire smoke, what happens to it, and how it interacts with other chemistry in wildfire smoke.

“Since the data were so recently collected, I tried to focus on what patterns we have already observed and what kinds of questions they lead to, which I’ve already started to explore,” Lindaas said. “It’s fun to try to tell a story, even/especially when you don’t know how it ends.”

Photos at top: Will Lassman (left) and Jakob Lindaas