Tall Tower Vertical Profiles and Diurnal Trends of Ammonia in the Colorado Front Range: Tall Tower Vertical Profiles of Ammonia

Tevlin, A. G.; Li, Y.; Collett, J. L.; McDuffie, E. E.; Fischer, E. V.; Murphy, J. G.

doi:10.1002/2017jd026534

Title: Tall Tower Vertical Profiles and Diurnal Trends of Ammonia in the Colorado Front Range: Tall Tower Vertical Profiles of Ammonia

Journal Article · 03 November 2017 · Journal of Geophysical Research: Atmospheres

DOI: https://doi.org/10.1002/2017jd026534 · OSTI ID:1537316

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^[2]; Collett, J. L. ^[3];

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Univ. of Toronto, ON (Canada)
Arizona Department of Environmental Quality, Phoenix, AZ (United States)
Colorado State Univ., Fort Collins, CO (United States)
Univ. of Colorado, Boulder, CO (United States); National Oceanic and Atmospheric Administration (NOAA), Boulder, CO (United States). Earth System Research Lab.

Abstract Ammonia (NH ₃ ) mixing ratios were measured between the surface and 280 m aboveground level from a moveable carriage at the Boulder Atmospheric Observatory tower in summer 2014 as part of the Front Range Air Pollution and Photochemistry Éxperiment. The campaign median mixing ratio was 3.3 ppb, ranging from below detection limits to 192 ppb. Median vertical profiles show an overall increase in NH ₃ mixing ratios toward the surface of 6.7 ppb (89%) during the day and 3.9 ppb (141%) at night. In contrast to the overall increasing trend, some individual profiles show decreasing NH ₃ in the lowest 10 m. This suggests that the local surface is capable of acting as either a source or a sink, depending on the relative amounts of NH ₃ at the surface, and in advected air parcels. We further use this data set to investigate the variation in diurnal patterns of NH ₃ as a function of height above the surface. At higher altitudes (100 ± 5 and 280 ± 5 m), NH ₃ mixing ratios reach a gradual maximum during the day between 9:00 and 16:00 local time, likely driven by changes in source region. At lower altitudes (10 ± 5 m), the daytime maximum begins earlier at about 7:00 local time, followed by a sharper increase at 9:00 local time. At this height we also observe a peak in NH ₃ mixing ratios during the night, likely driven by the trapping of emitted NH ₃ within the shallower nocturnal boundary layer.

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Research Organization:: Aerodyne Research, Inc., Billerica, MA (United States)

Sponsoring Organization:: USDOE Office of Science (SC)

Grant/Contract Number:: SC0006193; DESC0006193

OSTI ID:: 1537316

Alternate ID(s):: OSTI ID: 1410352

Journal Information:: Journal of Geophysical Research: Atmospheres, Vol. 122, Issue 22; ISSN 2169-897X

Publisher:: American Geophysical UnionCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 28 works

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Measurements and modeling of the inorganic chemical composition of fine particulate matter and associated precursor gases in California's San Joaquin Valley during CalNex 2010: Inorganic PM & gases in the SJV Markovic, M. Z.; VandenBoer, T. C.; Baker, K. R. Journal of Geophysical Research: Atmospheres, Vol. 119, Issue 11 https://doi.org/10.1002/2013JD021408	journal	June 2014
Chlorine activation within urban or power plant plumes: Vertically resolved ClNO ₂ and Cl ₂ measurements from a tall tower in a polluted continental setting : CHLORINE ACTIVATION WITHIN PLUMES Riedel, Theran P.; Wagner, Nicholas L.; Dubé, William P. Journal of Geophysical Research: Atmospheres, Vol. 118, Issue 15 https://doi.org/10.1002/jgrd.50637	journal	August 2013
An investigation of ammonia and inorganic particulate matter in California during the CalNex campaign: CALNEX AMMONIA AND INORGANIC FINE PM Schiferl, Luke D.; Heald, Colette L.; Nowak, John B. Journal of Geophysical Research: Atmospheres, Vol. 119, Issue 4 https://doi.org/10.1002/2013JD020765	journal	February 2014
Validation of TES ammonia observations at the single pixel scale in the San Joaquin Valley during DISCOVER-AQ: VALIDATION OF TES AMMONIA IN SJV Sun, Kang; Cady-Pereira, Karen; Miller, David J. Journal of Geophysical Research: Atmospheres, Vol. 120, Issue 10 https://doi.org/10.1002/2014JD022846	journal	May 2015

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Evaluation of ambient ammonia measurements from a research aircraft using a closed-path QC-TILDAS operated with active continuous passivation Pollack, Ilana B.; Lindaas, Jakob; Roscioli, J. Robert Atmospheric Measurement Techniques, Vol. 12, Issue 7 https://doi.org/10.5194/amt-12-3717-2019	journal	January 2019
Airborne and ground-based observations of ammonium-nitrate-dominated aerosols in a shallow boundary layer during intense winter pollution episodes in northern Utah Franchin, Alessandro; Fibiger, Dorothy L.; Goldberger, Lexie Atmospheric Chemistry and Physics, Vol. 18, Issue 23 https://doi.org/10.5194/acp-18-17259-2018	journal	January 2018
NH₃ emissions from large point sources derived from CrIS and IASI satellite observations Dammers, Enrico; McLinden, Chris A.; Griffin, Debora Atmospheric Chemistry and Physics, Vol. 19, Issue 19 https://doi.org/10.5194/acp-19-12261-2019	journal	January 2019
The vertical variability of ammonia in urban Beijing, China Zhang, Yangyang; Tang, Aohan; Wang, Dandan Atmospheric Chemistry and Physics, Vol. 18, Issue 22 https://doi.org/10.5194/acp-18-16385-2018	journal	January 2018
Estimating global surface ammonia concentrations inferred from satellite retrievals Liu, Lei; Zhang, Xiuying; Wong, Anthony Y. H. Atmospheric Chemistry and Physics, Vol. 19, Issue 18 https://doi.org/10.5194/acp-19-12051-2019	journal	January 2019
NH₃ emissions from large point sources derived from CrIS and IASI satellite observations Dammers, Enrico; McLinden, Chris A.; Griffin, Debora Atmospheric Chemistry and Physics Discussions https://doi.org/10.5194/acp-2019-453	posted_content	June 2019

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