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Influence of Local Air Pollution on the Deposition of Peroxyacteyl Nitrate to a Nutrient-poor Natural Grassland Ecosystem : Volume 14, Issue 14 (08/08/2014)

By Moravek, A.

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Book Id: WPLBN0003978087
Format Type: PDF Article :
File Size: Pages 34
Reproduction Date: 2015

Title: Influence of Local Air Pollution on the Deposition of Peroxyacteyl Nitrate to a Nutrient-poor Natural Grassland Ecosystem : Volume 14, Issue 14 (08/08/2014)  
Author: Moravek, A.
Volume: Vol. 14, Issue 14
Language: English
Subject: Science, Atmospheric, Chemistry
Collections: Periodicals: Journal and Magazine Collection (Contemporary), Copernicus GmbH
Publication Date:
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

Description: Max Planck Institute for Chemistry, Biogeochemistry Department, P.O. Box 3060, 55020 Mainz, Germany. Dry deposition of peroxyacetyl nitrate (PAN) is known to have a phytotoxic impact on plants under photochemical smog conditions, but it may also lead to higher productivity and threaten species richness of vulnerable ecosystems in remote regions. However, underlying mechanisms or controlling factors for PAN deposition are not well understood and studies on dry deposition of PAN are limited. In this study, we investigate the impact of PAN deposition on a nutrient-poor natural grassland ecosystem situated at the edge of an urban and industrialized region in Germany. PAN mixing ratios were measured within a 3.5 months summer to early autumn period. In addition, PAN fluxes were determined with the modified Bowen ratio technique for a selected period. The evaluation of both stomatal and non-stomatal deposition pathways was used to model PAN deposition over the entire summer-autumn period. We found that air masses at the site were influenced by two contrasting pollution regimes, which lead to median diurnal PAN mixing ratios ranging between 50 and 300 ppt during unpolluted and between 200 and 600 ppt during polluted episodes. The measured PAN fluxes showed a clear diurnal cycle with maximal deposition fluxes of ~ −0.1 nmol m−2 s−1 (corresponding to a deposition velocity of 0.3 cm s−1) during daytime and a significant non-stomatal contribution was found. The ratio of PAN to ozone deposition velocities was found to be ~0.1, which is much larger than assumed by current deposition models. The modelled PAN flux over the entire period revealed that PAN deposition over an entire day was 333 Μg m−2 d−1 under unpolluted and 518 Μg m−2 d−1 under polluted episodes. Besides, thermochemical decomposition PAN deposition accounted for 32% under unpolluted episodes and 22% under polluted episodes of the total atmospheric PAN loss. However, the impact of PAN deposition as a nitrogen source to the nutrient-poor grassland was estimated to be only minor, under both unpolluted and polluted episodes.

Influence of local air pollution on the deposition of peroxyacteyl nitrate to a nutrient-poor natural grassland ecosystem

Brown, S. S. and Stutz, J.: Nighttime radical observations and chemistry, Chem. Soc. Rev., 41, 6405–6447, 2012.; Businger, J. A.: Evaluation of the accuracy with which dry deposition can be measured with current micrometeorological techniques, J. Clim. Appl. Meteorol.,; Cazorla, M. and Brune, W. H.: Measurement of Ozone Production Sensor, Atmos. Meas. Tech., 3, 545–555, doi:10.5194/amt-3-545-2010, 2010.; De Bruin, H. A. R. and Moore, C. J.: Zero-plane displacement and roughness length for tall vegetation, derived from a simple mass conservation hypothesis, Bound.-Lay. Meteorol., 31, 39–49, 1985.; Dennis, R. L., Schwede, D. B., Bash, J. O., Pleim, J. E., Walker, J. T., and Foley, K. M.: Sensitivity of continental United States atmospheric budgets of oxidized and reduced nitrogen to dry deposition parametrizations, Philos. T. R. Soc. B, 368, 20130124, doi:10.1098/rstb.2013.0124, 2013.; Doskey, P. V., Kotamarthi, V. R., Fukui, Y., Cook, D. R., Breitbeil, F. W., and Wesely, M. L.: Air-surface exchange of peroxyacetyl nitrate at a grassland site, J. Geophys. Res.-Atmos., 109, D10310, doi:10.1029/2004jd004533, 2004.; EUROSTAT: Agricuture and Fishery Statistics: Main Results 2009–10, 2011 edn., Publications Office of the European Union, Luxembourg, 152 pp., 2011.; Foken, T. and Wichura, B.: Tools for quality assessment of surface-based flux measurements, Agr. Forest Meteorol., 78, 83–105, 1996.; Foken, T., Leuning, R., Oncley, S., Mauder, M., and Aubinet, M.: Corrections and data quality control, in: Eddy Covariance edited by: Aubinet, M., Vesala, T., and Papale, D., Springer, Dordrecht, Heidelberg, London, New York, 85–131, 2012.; Garland, J. A.: The dry deposition of sulphur dioxide to land and water surfaces, P. Roy. Soc. Lond. A Mat., 354, 245–268, 1977.; Garland, J. A. and Penkett, S. A.: Absorption of peroxy acetyl nitrate and ozone by natural surfaces, Atmos. Environ., 10, 1127–1131, 1976.; 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 Soil Poll., 36, 311–330, 1987.; Hill, A. C.: Vegetation – sink for atmospheric pollutants, J. Air Pollut. Control Assoc., 21, 341–346, 1971.; Kames, J. and Schurath, U.: Henrys Law and hydrolysis-rate constants for peroxyacyl nitrates (PANS) using a homogeneous gas-phase source, J. Atmos. Chem., 21, 151–164, 1995.; Kames, J., Schweighoefer, S., and Schurath, U.: Henrys Law constant and hydrolysis of peroxyacetyl nitrate (PAN), J. Atmos. Chem., 12, 169–180, 1991.; Liu, H. P. and Foken, T.: A modified Bowen ratio method to determine sensible and latent heat fluxes, Meteorol. Z., 10, 71–80, 2001.; Lamaud, E., Loubet, B., Irvine, M., Stella, P., Personne, E., and Cellier, P.: Partitioning of ozone deposition over a developed maize crop between stomatal and non-stomatal uptakes, using Eddy-covariance flux measurements and modelling, Agr. Forest Meteorol., 149, 1385–1396, 2009.; Mauder, M. and Foken, T.: Documentation and Instruction Manual of the Eddy-Covariance Software Package TK3, Arbeitsergebnisse, Abteilung Mikrometeorologie, Universität Bayreuth, Bayreuth, 60 pp., ISSN 1614–8916, 2011.; McFadyen, G. G. and Cape, J. N.: Physical and chemical influences on PAN concentrations at a rural site, Atmos. Environ., 33, 2929–2940, 1999.; Moravek, A., Trebs, I., and Foken, T.: Effect of imprecise lag time and high-frequency attenuation on surface-atmosphere exchange fluxes determined with the relaxed eddy accumulation method, J. Geophys. Res.-Atmos., 118, 10210–10224, 2013.; Moravek, A., Foken, T., and Trebs, I.: Application of a GC-ECD for measurements of biosphere–atmosphere exchange fluxes of peroxyacetyl nitrate using the relaxed eddy accumulation and gradient met


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