Articles | Volume 25, issue 21
https://doi.org/10.5194/acp-25-15245-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-25-15245-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
10 Nov 2025
Research article |
| 10 Nov 2025
| 10 Nov 2025
Sensitivity of simulated ammonia fluxes in Rocky Mountain National Park to measurement time resolution and meteorological inputs
Lillian E. Naimie
Department of Atmospheric Science, Colorado State University, Fort Collins, CO 80523, USA
Da Pan
Department of Atmospheric Science, Colorado State University, Fort Collins, CO 80523, USA
Amy P. Sullivan
Department of Atmospheric Science, Colorado State University, Fort Collins, CO 80523, USA
John T. Walker
United States Environmental Protection Agency, Office of Research and Development, Durham, NC 27709, USA
Aleksandra Djurkovic
United States Environmental Protection Agency, Office of Research and Development, Durham, NC 27709, USA
Bret A. Schichtel
Cooperative Institute for Research in the Atmosphere, Colorado State University, Fort Collins, CO 80523, USA
US National Park Service, Air Resource Division, Lakewood, CO 80225-0287, USA
Jeffrey L. Collett Jr.
CORRESPONDING AUTHOR
Department of Atmospheric Science, Colorado State University, Fort Collins, CO 80523, USA
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Joseph O. Palmo, Colette L. Heald, Donald R. Blake, Ilann Bourgeois, Matthew Coggon, Jeff Collett, Frank Flocke, Alan Fried, Georgios Gkatzelis, Samuel Hall, Lu Hu, Jose L. Jimenez, Pedro Campuzano-Jost, I-Ting Ku, Benjamin Nault, Brett Palm, Jeff Peischl, Ilana Pollack, Amy Sullivan, Joel Thornton, Carsten Warneke, Armin Wisthaler, and Lu Xu
EGUsphere, https://doi.org/10.5194/egusphere-2025-1969, https://doi.org/10.5194/egusphere-2025-1969, 2025
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This study investigates ozone production within wildfire smoke plumes as they age, using both aircraft observations and models. We find that the chemical environment and resulting ozone production within smoke changes as plumes evolve, with implications for climate and public health.
Chiara Giorio, Anne Monod, Valerio Di Marco, Pierre Herckes, Denise Napolitano, Amy Sullivan, Gautier Landrot, Daniel Warnes, Marika Nasti, Sara D'Aronco, Agathe Gérardin, Nicolas Brun, Karine Desboeufs, Sylvain Triquet, Servanne Chevaillier, Claudia Di Biagio, Francesco Battaglia, Frédéric Burnet, Stuart J. Piketh, Andreas Namwoonde, Jean-François Doussin, and Paola Formenti
EGUsphere, https://doi.org/10.5194/egusphere-2024-4140, https://doi.org/10.5194/egusphere-2024-4140, 2025
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A comparison between the solubility of trace metals in pairs of total suspended particulate (TSP) and fog water samples collected in Henties Bay, Namibia, during the AEROCLO-sA field campaign is presented. We found enhanced solubility of metals in fog samples which we attributed to metal-ligand complexes formation in the early stages of particle activation into droplets which can then remain in a kinetically stable form in fog or lead to the formation of colloidal nanoparticles.
Yingjie Shen, Rudra P. Pokhrel, Amy P. Sullivan, Ezra J. T. Levin, Lauren A. Garofalo, Delphine K. Farmer, Wade Permar, Lu Hu, Darin W. Toohey, Teresa Campos, Emily V. Fischer, and Shane M. Murphy
Atmos. Chem. Phys., 24, 12881–12901, https://doi.org/10.5194/acp-24-12881-2024, https://doi.org/10.5194/acp-24-12881-2024, 2024
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The magnitude and evolution of brown carbon (BrC) absorption remain unclear, with uncertainty in climate models. Data from the WE-CAN airborne experiment show that model parameterizations overestimate the mass absorption cross section (MAC) of BrC. Observed decreases in BrC absorption with chemical markers are due to decreasing organic aerosol (OA) mass rather than a decreasing BrC MAC, which is currently implemented in models. Water-soluble BrC contributes 23 % of total absorption at 660 nm.
Lixu Jin, Wade Permar, Vanessa Selimovic, Damien Ketcherside, Robert J. Yokelson, Rebecca S. Hornbrook, Eric C. Apel, I-Ting Ku, Jeffrey L. Collett Jr., Amy P. Sullivan, Daniel A. Jaffe, Jeffrey R. Pierce, Alan Fried, Matthew M. Coggon, Georgios I. Gkatzelis, Carsten Warneke, Emily V. Fischer, and Lu Hu
Atmos. Chem. Phys., 23, 5969–5991, https://doi.org/10.5194/acp-23-5969-2023, https://doi.org/10.5194/acp-23-5969-2023, 2023
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Air quality in the USA has been improving since 1970 due to anthropogenic emission reduction. Those gains have been partly offset by increased wildfire pollution in the western USA in the past 20 years. Still, we do not understand wildfire emissions well due to limited measurements. Here, we used a global transport model to evaluate and constrain current knowledge of wildfire emissions with recent observational constraints, showing the underestimation of wildfire emissions in the western USA.
John T. Walker, Xi Chen, Zhiyong Wu, Donna Schwede, Ryan Daly, Aleksandra Djurkovic, A. Christopher Oishi, Eric Edgerton, Jesse Bash, Jennifer Knoepp, Melissa Puchalski, John Iiames, and Chelcy F. Miniat
Biogeosciences, 20, 971–995, https://doi.org/10.5194/bg-20-971-2023, https://doi.org/10.5194/bg-20-971-2023, 2023
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Better estimates of atmospheric nitrogen (N) deposition are needed to accurately assess ecosystem risk and impacts from deposition of nutrients and acidity. Using measurements and modeling, we estimate total N deposition of 6.7 kg N ha−1 yr−1 at a forest site in the southern Appalachian Mountains, a region sensitive to atmospheric deposition. Reductions in deposition of reduced forms of N (ammonia and ammonium) will be needed to meet the lowest estimates of N critical loads for the region.
Amy P. Sullivan, Rudra P. Pokhrel, Yingjie Shen, Shane M. Murphy, Darin W. Toohey, Teresa Campos, Jakob Lindaas, Emily V. Fischer, and Jeffrey L. Collett Jr.
Atmos. Chem. Phys., 22, 13389–13406, https://doi.org/10.5194/acp-22-13389-2022, https://doi.org/10.5194/acp-22-13389-2022, 2022
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During the WE-CAN (Western Wildfire Experiment for Cloud Chemistry, Aerosol Absorption and Nitrogen) study, brown carbon (BrC) absorption was measured on the NSF/NCAR C-130 aircraft using a particle-into-liquid sampler and photoacoustic aerosol absorption spectrometer. Approximately 45 % of the BrC absorption in wildfires was observed to be due to water-soluble species. The ratio of BrC absorption to WSOC or ΔCO showed no clear dependence on fire dynamics or the time since emission over 9 h.
Bruno Debus, Andrew T. Weakley, Satoshi Takahama, Kathryn M. George, Anahita Amiri-Farahani, Bret Schichtel, Scott Copeland, Anthony S. Wexler, and Ann M. Dillner
Atmos. Meas. Tech., 15, 2685–2702, https://doi.org/10.5194/amt-15-2685-2022, https://doi.org/10.5194/amt-15-2685-2022, 2022
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In the US, routine particulate matter composition is measured on samples collected on three types of filter media and analyzed using several techniques. We propose an alternate approach that uses one analytical technique, Fourier transform-infrared spectroscopy (FT-IR), and one filter type to measure the chemical composition of particulate matter in a major US monitoring network. This method could be used to add low-cost sites to the network, fill-in missing data, or for quality control.
James R. Ouimette, William C. Malm, Bret A. Schichtel, Patrick J. Sheridan, Elisabeth Andrews, John A. Ogren, and W. Patrick Arnott
Atmos. Meas. Tech., 15, 655–676, https://doi.org/10.5194/amt-15-655-2022, https://doi.org/10.5194/amt-15-655-2022, 2022
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We show that the low-cost PurpleAir sensor can be characterized as a cell-reciprocal nephelometer. At two very different locations (Mauna Loa Observatory in Hawaii and the Table Mountain rural site in Colorado), the PurpleAir measurements are highly correlated with the submicrometer aerosol scattering coefficient measured by a research-grade integrating nephelometer. These results imply that, with care, PurpleAir data may be used to evaluate climate and air quality models.
Linghan Zeng, Amy P. Sullivan, Rebecca A. Washenfelder, Jack Dibb, Eric Scheuer, Teresa L. Campos, Joseph M. Katich, Ezra Levin, Michael A. Robinson, and Rodney J. Weber
Atmos. Meas. Tech., 14, 6357–6378, https://doi.org/10.5194/amt-14-6357-2021, https://doi.org/10.5194/amt-14-6357-2021, 2021
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Three online systems for measuring water-soluble brown carbon are compared. A mist chamber and two different particle-into-liquid samplers were deployed on separate research aircraft targeting wildfires and followed a similar detection method using a long-path liquid waveguide with a spectrometer to measure the light absorption from 300 to 700 nm. Detection limits, signal hysteresis and other sampling issues are compared, and further improvements of these liquid-based systems are provided.
Andreas Tilgner, Thomas Schaefer, Becky Alexander, Mary Barth, Jeffrey L. Collett Jr., Kathleen M. Fahey, Athanasios Nenes, Havala O. T. Pye, Hartmut Herrmann, and V. Faye McNeill
Atmos. Chem. Phys., 21, 13483–13536, https://doi.org/10.5194/acp-21-13483-2021, https://doi.org/10.5194/acp-21-13483-2021, 2021
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Feedbacks of acidity and atmospheric multiphase chemistry in deliquesced particles and clouds are crucial for the tropospheric composition, depositions, climate, and human health. This review synthesizes the current scientific knowledge on these feedbacks using both inorganic and organic aqueous-phase chemistry. Finally, this review outlines atmospheric implications and highlights the need for future investigations with respect to reducing emissions of key acid precursors in a changing world.
Yang Wang, Guangjie Zheng, Michael P. Jensen, Daniel A. Knopf, Alexander Laskin, Alyssa A. Matthews, David Mechem, Fan Mei, Ryan Moffet, Arthur J. Sedlacek, John E. Shilling, Stephen Springston, Amy Sullivan, Jason Tomlinson, Daniel Veghte, Rodney Weber, Robert Wood, Maria A. Zawadowicz, and Jian Wang
Atmos. Chem. Phys., 21, 11079–11098, https://doi.org/10.5194/acp-21-11079-2021, https://doi.org/10.5194/acp-21-11079-2021, 2021
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This paper reports the vertical profiles of trace gas and aerosol properties over the eastern North Atlantic, a region of persistent but diverse subtropical marine boundary layer (MBL) clouds. We examined the key processes that drive the cloud condensation nuclei (CCN) population and how it varies with season and synoptic conditions. This study helps improve the model representation of the aerosol processes in the remote MBL, reducing the simulated aerosol indirect effects.
Cited articles
Baron, J. S.: Hindcasting Nitrogen Deposition To Determine An Ecological Critical Load, Ecological Applications, 16), 433–439, https://doi.org/10.1890/1051-0761(2006)016[0433:HNDTDA]2.0.CO;2, 2006.
Baron, J. S., Rueth, H. M., Wolfe, A. M., Nydick, K. R., Allstott, E. J., Minear, J. T., and Moraska, B.: Ecosystem Responses to Nitrogen Deposition in the Colorado Front Range, Ecosystems, 3, 352–368, https://doi.org/10.1007/s100210000032, 2000.
Beem, K. B., Raja, S., Schwandner, F. M., Taylor, C., Lee, T., Sullivan, A. P., Carrico, C. M., McMeeking, G. R., Day, D., Levin, E., Hand, J., Kreidenweis, S. M., Schichtel, B., Malm, W. C., and Collett, J. L.: Deposition of reactive nitrogen during the Rocky Mountain Airborne Nitrogen and Sulfur (RoMANS) study, Environmental Pollution, 158, 862–872, https://doi.org/10.1016/j.envpol.2009.09.023, 2010.
Benedict, K. B., Carrico, C. M., Kreidenweis, S. M., Schichtel, B., Malm, W. C., and Collett Jr., J. L.: A seasonal nitrogen deposition budget for Rocky Mountain National Park, Ecological Applications, 23, 1156–1169, https://doi.org/10.1890/12-1624.1, 2013a.
Benedict, K. B., Day, D., Schwandner, F. M., Kreidenweis, S. M., Schichtel, B., Malm, W. C., and Collett, J. L.: Observations of atmospheric reactive nitrogen species in Rocky Mountain National Park and across northern Colorado, Atmospheric Environment, 64, 66–76, https://doi.org/10.1016/j.atmosenv.2012.08.066, 2013b.
Benedict, K. B., Prenni, A. J., Sullivan, A. P., Evanoski-Cole, A. R., Fischer, E. V., Callahan, S., Sive, B. C., Zhou, Y., Schichtel, B. A., and Collett Jr., J. L.: Impact of Front Range sources on reactive nitrogen concentrations and deposition in Rocky Mountain National Park, PeerJ, https://doi.org/10.7717/peerj.4759, 2018.
Bobbink, R.: Effects of Nutrient Enrichment in Dutch Chalk Grassland, Journal of Applied Ecology, 28, 28–41, https://doi.org/10.2307/2404111, 1991.
Boot, C. M., Hall, E. K., Denef, K., and Baron, J. S.: Long-term reactive nitrogen loading alters soil carbon and microbial community properties in a subalpine forest ecosystem, Soil Biology and Biochemistry, 92, 211–220, https://doi.org/10.1016/j.soilbio.2015.10.002, 2016.
Bowker, G. E., Schwede, D. B., Lear, G. G., Warren-Hicks, W. J., and Finkelstein, P. L.: Quality Assurance Decisions with Air Models: A Case Study of Imputation of Missing Input Data Using EPA's Multi-layer Model, Water Air Soil Pollut., 222, 391–402, https://doi.org/10.1007/s11270-011-0832-7, 2011.
Bowman, W. D., Murgel, J., Blett, T., and Porter, E.: Nitrogen critical loads for alpine vegetation and soils in Rocky Mountain National Park, Journal of Environmental Management, 103, 165–171, https://doi.org/10.1016/j.jenvman.2012.03.002, 2012.
Butler, T., Vermeylen, F., Lehmann, C. M., Likens, G. E., and Puchalski, M.: Increasing ammonia concentration trends in large regions of the USA derived from the NADP/AMoN network, Atmospheric Environment, 146, 132–140, https://doi.org/10.1016/j.atmosenv.2016.06.033, 2016.
Burns, D. A.: Atmospheric nitrogen deposition in the Rocky Mountains of Colorado and southern Wyoming – a review and new analysis of past study results, Atmospheric Environment, 37, 921–932, https://doi.org/10.1016/S1352-2310(02)00993-7, 2003.
CDPHE (Colorado Department of Public Health and Environment, Air Pollution Control Division): Nitrogen Deposition Reduction Plan, Colorado Department of Public Health and Environment, https://cdphe.colorado.gov/public-information/planning-and-outreach/rocky-mountain-national-park-initiative (last access: 5 October 2024), 2007.
Dempster, J. (Ed.): Signal Analysis and Measurement, in The Laboratory Computer, 136–171, Academic Press, London, https://doi.org/10.1016/B978-012209551-1/50039-8, 2001.
Driscoll, C., Milford, J. B., Henze, D. K., and Bell, M. D.: Atmospheric reduced nitrogen: Sources, transformations, effects, and management, Journal of the Air & Waste Management Association, 74, 362–415, https://doi.org/10.1080/10962247.2024.2342765, 2024.
Galloway, J. N., Townsend, A. R., Erisman, J. W., Bekunda, M., Cai, Z., Freney, J. R., Martinelli, L. A., Seitzinger, S. P., and Sutton, M. A.: Transformation of the Nitrogen Cycle: Recent Trends, Questions, and Potential Solutions, Science, 320, 889–892, https://doi.org/10.1126/science.1136674, 2008.
Gebhart, K. A., Schichtel, B. A., Malm, W. C., Barna, M. G., Rodriguez, M. A., and Collett, J. L.: Back-trajectory-based source apportionment of airborne sulfur and nitrogen concentrations at Rocky Mountain National Park, Colorado, USA, Atmospheric Environment, 45, 621–633, https://doi.org/10.1016/j.atmosenv.2010.10.035, 2011.
Giusti, M.: ERA5: How to calculate Obukhov Length, Copernicus Knowledge Base, European Centre for Medium-Range Weather Forecasts (ECMWF) [code], https://confluence.ecmwf.int/display/CKB/ERA5:+How+to+calculate+Obukhov+Length (last access: 4 June 2025), 2024.
Hendriks, C., Kranenburg, R., Kuenen, J. J. P., Van den Bril, B., Verguts, V., and Schaap, M.: Ammonia emission time profiles based on manure transport data improve ammonia modelling across north western Europe, Atmospheric Environment, 131, 83–96, https://doi.org/10.1016/j.atmosenv.2016.01.043, 2016.
Hersbach, H., Bell, B., Berrisford, P., Hirahara, S., Horányi, A., Muñoz-Sabater, J., Nicolas, J., Peubey, C., Radu, R., Schepers, D., Simmons, A., Soci, C., Abdalla, S., Abellan, X., Balsamo, G., Bechtold, P., Biavati, G., Bidlot, J., Bonavita, M., De Chiara, G., Dahlgren, P., Dee, D., Diamantakis, M., Dragani, R., Flemming, J., Forbes, R., Fuentes, M., Geer, A., Haimberger, L., Healy, S., Hogan, R. J., Hólm, E., Janisková, M., Keeley, S., Laloyaux, P., Lopez, P., Lupu, C., Radnoti, G., de Rosnay, P., Rozum, I., Vamborg, F., Villaume, S., and Thépaut, J.-N.: The ERA5 Global Reanalysis, Quarterly Journal of the Royal Meteorological Society, 146, 1999–2049, https://doi.org/10.1002/qj.3803, 2020.
Hicks, B. B., Baldocchi, D. D., Meyers, T. P., Hosker, R. P., and Matt, D. R.: A preliminary multiple resistance routine for deriving dry deposition velocities from measured quantities, Water, Air, and Soil Pollution, 36, 311–330, https://doi.org/10.1007/BF00229675, 1987.
Hogrefe, C., Bash, J. O., Pleim, J. E., Schwede, D. B., Gilliam, R. C., Foley, K. M., Appel, K. W., and Mathur, R.: An analysis of CMAQ gas-phase dry deposition over North America through grid-scale and land-use-specific diagnostics in the context of AQMEII4, Atmos. Chem. Phys., 23, 8119–8147, https://doi.org/10.5194/acp-23-8119-2023, 2023.
Holtgrieve, G. W., Schindler, D. E., Hobbs, W. O., Leavitt, P. R., Ward, E. J., Bunting, L., Chen, G., Finney, B. P., Gregory-Eaves, I., Holmgren, S., Lisac, M. J., Lisi, P. J., Nydick, K., Rogers, L. A., Saros, J. E., Selbie, D. T., Shapley, M. D., Walsh, P. B., and Wolfe, A. P.: A Coherent Signature of Anthropogenic Nitrogen Deposition to Remote Watersheds of the Northern Hemisphere, Science, 334, 1545–1548, https://doi.org/10.1126/science.1212267, 2011.
Hu, C., Griffis, T. J., Frie, A., Baker, J. M., Wood, J. D., Millet, D. B., Yu, Z., Yu, X., and Czarnetzki, A. C.: A multiyear constraint on ammonia emissions and deposition within the US Corn Belt, Geophysical Research Letters, 48, e2020GL090865, https://doi.org/10.1029/2020GL090865, 2021.
Jongenelen, T., van Zanten, M., Dammers, E., Wichink Kruit, R., Hensen, A., Geers, L., and Erisman, J. W.: Validation and uncertainty quantification of three state-of-the-art ammonia surface exchange schemes using NH3 flux measurements in a dune ecosystem, Atmos. Chem. Phys., 25, 4943–4963, https://doi.org/10.5194/acp-25-4943-2025, 2025.
Juncosa Calahorrano, J. F., Sullivan, A. P., Pollack, I. B., Roscioli, J. R., McCabe, M. E., Steinmann, K. M., Caulton, D. R., Li, E., Pierce, J. R., Naimie, L. E., Pan, D., Collett Jr., J. L., and Fischer, E. V.: Anatomy of Summertime Upslope Events in Northeastern Colorado: Ammonia (NH3) Transport to the Rocky Mountains, Environmental Science & Technology, 58, 16922–16930, https://doi.org/10.1021/acs.est.3c10902, 2024.
Kanakidou, M., Myriokefalitakis, S., Daskalakis, N., Fanourgakis, G., Nenes, A., Baker, A. R., Tsigaridis, K., and Mihalopoulos, N.: Past, Present, and Future Atmospheric Nitrogen Deposition, Journal of the Atmospheric Sciences, 73, 2039–2047, https://doi.org/10.1175/JAS-D-15-0278.1, 2016.
Kong, B., Liu, N., Fan, L., Lin, L., Yang, L., Chen, H., Wang, Y., Zhang, Y., and Xu, Y.: Evaluation of surface meteorology parameters and heat fluxes from CFSR and ERA5 over the Pacific Arctic Region, Quarterly Journal of the Royal Meteorological Society, 148, 2973–2990, https://doi.org/10.1002/qj.4346, 2022.
Korb, J. E. and Ranker, T. A.: Changes in stand composition and structure between 1981 and 1996 in four Front Range plant communities in Colorado, Plant Ecology, 157, 1–11, https://doi.org/10.1023/A:1013772220131, 2001.
Li, Y., Schichtel, B. A., Walker, J. T., Schwede, D. B., Chen, X., Lehmann, C. M. B., Puchalski, M. A., Gay, D. A., and Collett, J. L.: Increasing importance of deposition of reduced nitrogen in the United States, Proceedings of the National Academy of Sciences, 113, 5874–5879, https://doi.org/10.1073/pnas.1525736113, 2016.
Massad, R.-S., Nemitz, E., and Sutton, M. A.: Review and parameterisation of bi-directional ammonia exchange between vegetation and the atmosphere, Atmos. Chem. Phys., 10, 10359–10386, https://doi.org/10.5194/acp-10-10359-2010, 2010.
Mayer, J., Mayer, M., Haimberger, L., and Liu, C.: Comparison of Surface Energy Fluxes from Global to Local Scale, J. Climate, 35, 4551–4569, https://doi.org/10.1175/JCLI-D-21-0598.1, 2022.
Meyers, T. P., Finkelstein, P., Clarke, J., Ellestad, T. G., and Sims, P. F.: A multilayer model for inferring dry deposition using standard meteorological measurements, Journal of Geophysical Research, 103, 22645–22661, 1998.
Montes, F., Rotz, C. A., and Chaoui, H.: Process Modeling of Ammonia Volatilization from Ammonium Solution and Manure Surfaces: A Review with Recommended Models, Transactions of the ASABE, 52, 1707–1720, https://doi.org/10.13031/2013.29133, 2009.
Naimie, L. E., Pan, D., Sullivan, A. P., Walker, J. T., Djurkovic, A., Schichtel, B. A., and Collett, J.: Data from: Sensitivity of simulated ammonia fluxes in Rocky Mountain National Park to measurement time resolution and meteorological inputs, Dryad [data set], https://doi.org/10.5061/dryad.0cfxpnwcw, 2025.
National Atmospheric Deposition Program (NRSP-3): NADP Program Office, Wisconsin State Laboratory of Hygiene, 465 Henry Mall, Madison, WI 53706 [data set], https://nadp.slh.wisc.edu/ (last access: 31 May 2024), 2022.
NEON (National Ecological Observatory Network): Site management and event reporting (DP1.10111.001), RELEASE-2023, NEON [data set], https://doi.org/10.48443/9p2t-hj77, 2023.
Nemitz, E., Milford, C., and Sutton, M. A.: A two-layer canopy compensation point model for describing bi-directional biosphere-atmosphere exchange of ammonia, Quarterly Journal of the Royal Meteorological Society, 127, 815–833, https://doi.org/10.1002/qj.49712757306, 2001.
Pan, D., Benedict, K. B., Golston, L. M., Wang, R., Collett, J. L. Jr., Tao, L., Sun, K., Guo, X., Ham, J., Prenni, A. J., Schichtel, B. A., Mikoviny, T., Müller, M., Wisthaler, A., and Zondlo, M. A.: Ammonia Dry Deposition in an Alpine Ecosystem Traced to Agricultural Emission Hotpots, Environmental Science & Technology, 55, 7776–7785, https://doi.org/10.1021/acs.est.0c05749, 2021.
Pan, Y., Gu, M., Song, L., Tian, S., Wu, D., Walters, W. W., Yu, X., Lü, X., Ni, X., Wang, Y., Cao, J., Liu, X., Fang, Y., and Wang, Y.: Systematic low bias of passive samplers in characterizing nitrogen isotopic composition of atmospheric ammonia, Atmospheric Research, 243, 105018, https://doi.org/10.1016/j.atmosres.2020.105018, 2020.
Pleim, J. E., Bash, J. O., Walker, J. T., and Cooter, E. J.: Development and evaluation of an ammonia bidirectional flux parameterization for air quality models, Journal of Geophysical Research: Atmospheres, 118, 3794–3806, https://doi.org/10.1002/jgrd.50262, 2013.
Puchalski, M. A., Sather, M. E., Walker, J. T., Lehmann, C. M. B., Gay, D. A., Mathew, J., and Robarge, W. P.: Passive ammonia monitoring in the United States: Comparing three different sampling devices, Journal of Environmental Monitoring, 13, 3156–3167, https://doi.org/10.1039/C1EM10553A, 2011.
Schiferl, L. D., Heald, C. L., Van Damme, M., Clarisse, L., Clerbaux, C., Coheur, P.-F., Nowak, J. B., Neuman, J. A., Herndon, S. C., Roscioli, J. R., and Eilerman, S. J.: Interannual variability of ammonia concentrations over the United States: sources and implications, Atmos. Chem. Phys., 16, 12305–12328, https://doi.org/10.5194/acp-16-12305-2016, 2016.
Schrader, F., Schaap, M., Zöll, U., Kranenburg, R., and Brümmer, C.: The hidden cost of using low-resolution concentration data in the estimation of NH3 dry deposition fluxes, Scientific Reports, 8, 969, https://doi.org/10.1038/s41598-017-18021-6, 2018.
Schwede, D. B. and Lear, G. G.: A novel hybrid approach for estimating total deposition in the United States, Atmospheric Environment, 92, 207–220, https://doi.org/10.1016/j.atmosenv.2014.04.008, 2014.
Shen, J., Chen, D., Bai, M., Sun, J., Coates, T., Lam, S. K., and Li, Y.: Ammonia deposition in the neighbourhood of an intensive cattle feedlot in Victoria, Australia, Scientific Reports, 6, 32793, https://doi.org/10.1038/srep32793, 2016.
Stratton, J. J., Ham, J., and Borch, T.: Ammonia Emissions from Subalpine Forest and Mountain Grassland Soils in Rocky Mountain National Park, Journal of Environmental Quality, 47, 778–785, https://doi.org/10.2134/jeq2018.01.0023, 2018.
Stull, R. B.: An Introduction to Boundary Layer Meteorology, Kluwer Academic, Dordrecht, https://doi.org/10.1007/978-94-009-3027-8, 1988.
Sutton, M. A., Schjørring, J. K., Wyers, G. P., Duyzer, J. H., Ineson, P., Powlson, D. S., Fowler, D., Jenkinson, D. S., Monteith, J. L., and Unsworth, M. H.: Plant–atmosphere exchange of ammonia, Philosophical Transactions of the Royal Society of London. Series A: Physical and Engineering Sciences, 351, 261–278, https://doi.org/10.1098/rsta.1995.0033, 1995.
Tanner, E., Buchmann, N., and Eugster, W.: Agricultural ammonia dry deposition and total nitrogen deposition to a Swiss mire, Agriculture, Ecosystems & Environment, 336, 108009, https://doi.org/10.1016/j.agee.2022.108009, 2022.
Thom, A. S.: Momentum, mass and heat exchange of plant communities, edited by: Monteith, J. L., Vegetation and the Atmosphere, Vol. 1, Academic Press, London, 57–110, 1975.
Tomsche, L., Piel, F., Mikoviny, T., Nielsen, C. J., Guo, H., Campuzano-Jost, P., Nault, B. A., Schueneman, M. K., Jimenez, J. L., Halliday, H., Diskin, G., DiGangi, J. P., Nowak, J. B., Wiggins, E. B., Gargulinski, E., Soja, A. J., and Wisthaler, A.: Measurement report: Emission factors of NH3 and NHx for wildfires and agricultural fires in the United States, Atmos. Chem. Phys., 23, 2331–2343, https://doi.org/10.5194/acp-23-2331-2023, 2023.
U.S. EPA: National Emissions Inventory [Tier I CAPS] [data set], https://www.epa.gov/air-emissions-inventories/national-emissions-inventory-nei (last access: 5 June 2024), 2023.
U.S. EPA: U.S. Environmental Protection Agency Clean Air Markets Division: Clean Air Status and Trends Network (CASTNET) [Weekly Dry Deposition] [data set], https://www.epa.gov/castnet (last access: 20 February 2024), 2024b.
U.S. EPA: U.S. Environmental Protection Agency Clean Air Markets Division: Clean Air Status and Trends Network (CASTNET) [Weekly Filter Pack] [data set], https://www.epa.gov/castnet (last access: 20 February 2024), 2024b.
Walker, J. T., Spence, P., Kimbrough, S., and Robarge, W.: Inferential model estimates of ammonia dry deposition in the vicinity of a swine production facility, Atmospheric Environment, 42, 3407–3418, https://doi.org/10.1016/j.atmosenv.2007.06.004, 2008.
Walker, J. T., Beachley, G., Amos, H. M., Baron, J. S., Bash, J., Baumgardner, R., Bell, M. D., Benedict, K. B., Chen, X., Clow, D. W., Cole, A., Coughlin, J. G., Cruz, K., Daly, R. W., Decina, S. M., Elliott, E. M., Fenn, M. E., Ganzeveld, L., Gebhart, K., Isil, S. S., Kerschner, B. M., Larson, R. S., Lavery, T., Lear, G. G., Macy, T., Mast, M. A., Mishoe, K., Morris, K. H., Padgett, P. E., Pouyat, R. V., Puchalski, M., Pye, H. O. T., Rea, A. W., Rhodes, M. F., Rogers, C. M., Saylor, R., Scheffe, R., Schichtel, B. A., Schwede, D. B., Sexstone, G. A., Sive, B.C., Sosa Echeverría, R., Templer, P. H., Thompson, T., Tong, D., Wetherbee, G. A., Whitlow, T. H., Wu, Z., Yu, Z., and Zhang, L.: Toward the improvement of total nitrogen deposition budgets in the United States, Science of The Total Environment, 691, 1328–1352, https://doi.org/10.1016/j.scitotenv.2019.07.058, 2019a.
Walker, J. T., Bell, M. D., Schwede, D., Cole, A., Beachley, G., Lear, G., and Wu, Z.: Aspects of uncertainty in total reactive nitrogen deposition estimates for North American critical load applications, Science of The Total Environment, 690, 1005–1018, https://doi.org/10.1016/j.scitotenv.2019.06.337, 2019b.
Wentworth, G. R., Murphy, J. G., Benedict, K. B., Bangs, E. J., and Collett Jr., J. L.: The role of dew as a night-time reservoir and morning source for atmospheric ammonia, Atmos. Chem. Phys., 16, 7435–7449, https://doi.org/10.5194/acp-16-7435-2016, 2016.
Wichink Kruit, R. J., Schaap, M., Sauter, F. J., van Zanten, M. C., and van Pul, W. A. J.: Modeling the distribution of ammonia across Europe including bi-directional surface–atmosphere exchange, Biogeosciences, 9, 5261–5277, https://doi.org/10.5194/bg-9-5261-2012, 2012.
Xiu, A. and Pleim, J. E.: Development of a Land Surface Model. Part I: Application in a Mesoscale Meteorological Model, Journal of Applied Meteorology, 40, 192–209, https://doi.org/10.1175/1520-0450(2001)040<0192:DOALSM>2.0.CO;2, 2001.
Zhan, X., Bo, Y., Zhou, F., Liu, X., Paerl, H. W., Shen, J., Wang, R., Li, F., Tao, S., Dong, Y., and Tang, X.: Evidence for the Importance of Atmospheric Nitrogen Deposition to Eutrophic Lake Dianchi, China, Environmental Science & Technology, 51, 6699–6708, https://doi.org/10.1021/acs.est.6b06135, 2017.
Zhang, L., Brook, J. R., and Vet, R.: A revised parameterization for gaseous dry deposition in air-quality models, Atmos. Chem. Phys., 3, 2067–2082, https://doi.org/10.5194/acp-3-2067-2003, 2003.
Zhang, L., Wright, L. P., and Asman, W. A. H.: Bi-directional air-surface exchange of atmospheric ammonia: A review of measurements and a development of a big-leaf model for applications in regional-scale air-quality models, Journal of Geophysical Research: Atmospheres, 115, https://doi.org/10.1029/2009JD013589, 2010.
Short summary
The contribution of ammonia atmosphere-surface exchange to excess deposition of reactive nitrogen is poorly understood. Reactive nitrogen deposition has negative impacts on ecosystem health. Ammonia can be difficult and expensive to measure. We demonstrate that depositions modeled using low-cost measurements underestimate ecosystem inputs but can be corrected using typical daily concentration cycles. We also illustrate the limitations of reanalysis meteorology for ammonia deposition modeling.
The contribution of ammonia atmosphere-surface exchange to excess deposition of reactive...
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