Are ammonia emissions from field-applied slurry substantially over-estimated in European emission inventories?

Biogeosciences

Volumn 9, Issue 5, 2012, Pages 1611-1632

  Sintermann, J ^a   Neftel, A ^a   Ammann, C ^a   Hani C ^a,e   Hensen, A ^b   Loubet, B ^c   Flechard, C R ^d  

^a AGROSCOPE RECKENHOLZ TÄNIKON RESEARCH STATION ART   (Switzerland)

^b TNO   (Netherlands)

^c CEMAGREF   (France)

^d AGROCAMPUS OUEST   (France)

^e BERN UNIVERSITY OF APPLIED SCIENCES   (Switzerland)

Author keywords

[No Author keywords available]

Indexed keywords

AGRICULTURAL EMISSION; AMMONIA; ATMOSPHERIC POLLUTION; DRY MATTER; EMISSION INVENTORY; EMPIRICAL ANALYSIS; METEOROLOGY; MODEL VALIDATION; NITROGEN; PH; SLURRY; VOLATILIZATION;

EUROPE;

BOS; SUIDAE;

EID: 84860669823     PISSN: 17264170     EISSN: 17264189     Source Type: Journal    
DOI: 10.5194/bg-9-1611-2012     Document Type: Review

References (106)

1. Ammann, C., Brunner, A., Spirig, C., and Neftel, A.: Technical note: Water vapour concentration and flux measurements with PTR-MS, Atmos. Chem. Phys., 6, 4643-4651, doi:10.5194/acp-6-4643-2006, 2006. (Pubitemid 44600397)
2. Amon, B., Kryvoruchko, V., Amon, T., and Zechmeister-Boltenstern, S.: Methane, nitrous oxide and ammonia emissions during storage and after application of dairy cattle slurry and influence of slurry treatment, Agr. Ecosyst. Environ., 112, 153-162, doi:10.1016/j.agee.2005.08.030, 2006. (Pubitemid 43087320)
3. Baldocchi, D. D., Hicks, B. B., and Meyers, T. P.: Measuring biosphere-atmosphere exchanges of biologically related gases with micrometeorological methods, Ecology, 69, 1331-1340, 1988. (Pubitemid 19324513)
4. Balsari, P., Dinuccio, E., Santoro, E., and Gioelli, F.: Ammonia emissions from rough cattle slurry and from derived solid and liquid fractions applied to alfalfa pasture, Aust. J. Exp. Agr., 48, 198-201, doi:10.1071/EA07234, 2008.
5. Berkhout, A. J. C., van der Hoff, G. R., Bergwerff, J. B., Swart, D. J. P., Hensen, A., Kraai, A., Bleeker, A., Huijsmans, J. F. M., Mosquera, J., and van Pul, W. A. J.: Measuring ammonia emissions from manured fields, no. 680150003 in RIVM Report, National Institute for Public Health and the Environment, Bilthoven, The Netherlands, 2008.
6. Bleeker, A., Sutton, M. A., Acherman, B., Alebic-Juretic, A., Aneja, V. P., Ellermann, T., Erisman, J. W., Fowler, D., Fagerli, H., Gauger, T., Harlen, K. S., Hole, L. R., Horvath, L., Mi-tosinkova, M., Smith, R. I., Tang, Y. S., and van Pul, A.: Linking ammonia emission trends to measured concentrations and deposition of reduced nitrogen at different scales, in: Atmospheric Ammonia - detecting emission changes and environmental impacts, edited by: Sutton, M. A., Reis, S., and Baker, S. M. H., 123-180, Springer, 2009.
7. Bhandral, R., Bittman, S., Kowalenko, G., Buckley, K., Chantigny, M. H., Hunt, D. E., Bounaix, F., and Friesen, A.: Enhancing Soil Infiltration Reduces Gaseous Emissions and Improves N Uptake from Applied Dairy Slurry, J. Environ. Qual., 38, 1372-1382, doi:10.2134/jeq2008.0287, 2009.
8. Beuning, J. D., Pattey, E., Edwards, G., and van Heyst, B. J.: Improved temporal resolution in process-based modelling of agricultural soil ammonia emissions, Atmos. Environ., 42, 3253-3265, 2008. (Pubitemid 351458406)
9. Bittman, S., van Vliet, L. J. P., Kowalenko, C. G., McGinn, S., Hunt, D. E., and Bounaix, F.: Surface-banding liquid manure over aeration slots: A new low-disturbance method for reducing ammonia emissions and improving yield of perennial grasses, Agron. J., 97, 1304-1313, 2005. (Pubitemid 41456801)
10. Brodeur, J. J., Warland, J. S., Staebler, R. M., and Wagner-Riddle, C.: Technical note: Laboratory evaluation of a tunable diode laser system for eddy covariance measurements of ammonia flux, Agr. Forest Meteorol., 149, 385-391, 2009. (Pubitemid 50288511)
11. Chantigny, M. H., Rochette, P., Angers, D. A., Masse, D., and Cote, D.: Ammonia volatilization and selected soil characteristics following application of anaerobically digested pig slurry, Soil Sci. Soc. Am. J., 68, 306-312, 2004. (Pubitemid 38086478)
12. Chantigny, M. H., MacDonald, J. D., Beaupre, C., Rochette, P., Angers, D. A., Masse, D., and Parent, L.: Ammonia volatilization following surface application of raw and treated liquid swine manure, Nutr. Cycl. Agroecosys., 85, 275-286, doi:10.1007/s10705-009-9266-7, 2009.
13. Dabberdt, W. F., Lenschow, D. H., Horst, T. W., Zimmermann, P. R., Oncley, S. P., and Delany, A. C.: Atmosphere-surface exchange measurements, Science, 260, 1472-1481, 1993.
14. de Vries, H. S. M., Harren, F. J. M., Wyers, G. P., Otjes, R. P., Slan-ina, J., and Reuss, J.: Non-intrusive, fast and sensitive ammonia detection by laser photothermal deflection, Atmos. Environ., 29, 1069-1074, 1995.
15. Denmead, O. T.: Micrometeorological methods for measuring gaseous losses of nitrogen in the field, in: Gaseous Loss of Nitrogen from Plant-Soil Systems, Kluwer Academic Publisher, Dordrecht, 133-157, 1983.
16. Denmead, O. T.: Novel meteorological methods for measuring trace gas fluxes, Philos. T. Roy. Soc. A, 351, 383-396, 1995.
17. Denmead, O. T.: Approaches to measuring fluxes of methane and nitrous oxide between landscapes and the atmosphere, Plant Soil, 309, 5-24, doi:10.1007/s11104-008-9599-z, 2008.
18. Denmead, O. T. and Raupach, M. R.: Methods for measuring atmospheric gas-transport in agricultural and forest systems, in: Agricultural Ecosystem Effects on Trace Gases and Global Climate Change, edited by Harper, L. A., Mosier, A. R., Duxbury, J. M., Rolston, D. E., Peterson, G. A., Baenziger, P. S., Lux-moore, R. J., and Kral, D. M., vol. 55 of ASA Special Publication, 19-43, Amer. Soc. Agronomy, 1993.
19. Denmead, O. T., Simpson, J. R., and Freney, J. R.: Direct field measurement of ammonia emission after injection of anhydrous ammonia, Soil Sci. Soc. Am. J., 41, 1001-1004, 1977. (Pubitemid 8564111)
20. Döhler, H., Eurich-Menden, B., Dämmgen, U., Osterburg, B., Lüttich, M., Bergschmidt, A., Berg, W., and Brunsch, R.: Adaptation of the German emission calculation methodology to international guidelines, determination and forecasting of ammonia emissions from German agriculture, and scenarios for reducing them by 2010, Forschungsbericht UBA-FB 000249, Umweltbundesamt, Berlin, 2002.
21. ECETOC: Ammonia emissions to air in Western Europe, Technical Report 62, European Centre for Ecotoxicology and Toxicology of Chemicals, Brussels, Belgium, 1994.
22. EEA: EMEP/EEA emission inventory guidebook 2009, European Environment Agency, Office for Official Publications of the European Communities, Luxembourg, http://www.eea.europa. eu/publications/emep-eea-emission-inventory- guidebook-2009, 2009.
23. Ellis, R. A., Murphy, J. G., Pattey, E., van Haarlem, R., O'Brien, J. M., and Herndon, S. C.: Characterizing a Quantum Cascade Tunable Infrared Laser Differential Absorption Spectrometer (QC-TILDAS) for measurements of atmospheric ammonia, Atmos. Meas. Tech., 3, 397-406, doi:10.5194/amt-3-397-2010, 2010.
24. Erisman, J. W., Bleeker, A., Galloway, J., and Sutton, M. S.: Reduced nitrogen in ecology and the environment, Environ. Pollut., 150, 140-149, doi:10.1016/j.envpol.2007.06.033, 2007. (Pubitemid 47592963)
25. Erisman, J. W., Bleeker, A., Hensen, A., and Vermeulen, A.: Agricultural air quality in Europe and the future perspectives, Atmos. Environ., 42, 3209-3217, doi:10.1016/j.atmosenv.2007.04.004, 2008. (Pubitemid 351467702)
26. 2O exchange over two mown grassland systems with contrasting management practices, Global Change Biol., 11, 2114-2127, doi:10.1111/j.1365-2486.2005.01056.x, 2005. (Pubitemid 43904649)
27. Flechard, C. R., Spirig, C., Neftel, A., and Ammann, C.: The annual ammonia budget of fertilised cut grassland - Part 2: Seasonal variations and compensation point modeling, Biogeosciences, 7, 537-556, doi:10.5194/bg-7-537- 2010, 2010.
28. Flesch, T. K., Wilson, J. D., and Yee, E.: Backward-time lagrangian stochastic dispersion models and their application to estimate gaseous emissions, J. Appl. Meteorol., 34, 1320-1332, 1995. (Pubitemid 26440931)
29. Flesch, T. K., Wilson, J. D., Harper, L. A., Crenna, B. P., and Sharpe, R. R.: Deducing ground-to-air emissions from observed trace gas concentrations: A field trial, J. Appl. Meteorol., 43, 487-502, 2004. (Pubitemid 38463261)
30. Flesch, T. K., Wilson, J. D., Harper, L. A., and Crenna, B. P.: Estimating gas emissions from a farm with an inverse-dispersion technique, Atmos. Environ., 39, 4863-4874, doi:10.1016/j.atmosenv.2005.04.032, 2005. (Pubitemid 41138239)
31. Galloway, J. N., Aber, J. D., Erisman, J. W., Seitzinger, S. P., Howarth, R. W., Cowling, E. B., and Cosby, B. J.: The nitrogen cascade, BioScience, 53, 341-356, 2003. (Pubitemid 36453247)
32. Gao, Z., Desjardins, R. L., and Flesch, T. K.: Comparison of a simplified micrometeorological mass difference technique and an inverse dispersion technique for estimating methane emissions from small area sources, Agr. Forest Meteorol., 149, 891-898, doi:10.1016/j.agrformet.2008.11.005, 2009.
33. Gao, Z., Desjardins, R. L., and Flesch, T. K.: Assessment of the uncertainty of using an inverse-dispersion technique to measure methane emissions from animals in a barn and in a small pen, Atmos. Environ., 44, 3128-3134, doi:10.1016/j.atmosenv.2010.05.032, 2010.
34. Gärtner, A., Hirschberger, R., and Kotzian, F.: Estimation of diffuse ammonia emissions during and after slurry spreading, Gefahrst. Reinhalt. L., 68, 149-155, 2008. (Pubitemid 351966948)
35. Génermont, S. and Cellier, P.: A mechanistic model for estimating ammonia volatilization from slurry applied to bare soil, Agr. Forest Meteorol., 88, 145-167, 1997. (Pubitemid 28091592)
36. Godson, W. L.: The diffusion of particulate matter from an elevated source, Arch. F. Met. Geophys. und Biokl., A(10), 305-327, 1958.
37. Hansen, M. N., Sommer, S. G., and Madsen, N. P.: Reduction of ammonia emission by shallow slurry injection: Injection efficiency and additional energy demand, J. Environ. Qual., 32, 1099-1104, 2003. (Pubitemid 36582921)
38. 3 exchange of a grass/clover crop at two levels of N application, Plant Soil, 235, 243-252, 2001. (Pubitemid 32996850)
39. Hertel, O., Reis, S., Skjøth, C. A., Bleeker, A., Harrison, R., Cape, J. N., Fowler, D., Skiba, U., Simpson, D., Jickells, T., Baker, A., Kulmala, M., Gyldenkaerne, S., Sørensen, L. L., and Erisman, J. W.: Nitrogen processes in the atmosphere, in: The European Nitrogen Assessment - Sources, Effects and Policy Perspectives, edited by Sutton, M. A., Howard, C. M., Erisman, J. W., Billen, G., Grennfelt, P., van Grinsven, H., and Grizzetti, B., 177-207, Cambridge University Press, Cambridge, UK, 2011.
40. Huijsmans, J. F. M., Hol, J. M. G., and Hendriks, M. M. W.: Effect of application technique, manure characteristics, weather and field conditions on ammonia volatilization from manure applied to grassland, Neth. J. Agr. Sci., 49, 323-342, 2001. (Pubitemid 33811291)
41. Huijsmans, J. F. M., Hol, J. M. G., and Vermeulen, G. D.: Effect of application method, manure characteristics, weather and field conditions on ammonia volatilization from manure applied to arable land, Atmos. Environ., 37, 3669-3680, doi:10.1016/S1352-2310(03)00450-3, 2003. (Pubitemid 36809175)
42. Hutchings, N. J., Sommer, S. G., and Jarvis, S. C.: A model of ammonia volatilization from a grazing livestock farm, Atmos. Environ., 30, 589-599, 1996. (Pubitemid 26009645)
43. Jarvis, S., Hutchings, N., Brentrup, F., Olesen, J. E., and van der Hoek, K.: Nitrogen flows in farming systems across Europe, in: The European Nitrogen Assessment - Sources, Effects and Policy Perspectives, edited by Sutton, M. A., Howard, C. M., Eris-man, J. W., Bleeker, A., Grennfelt, P., van Grinsven, H., and Grizzetti, B., 211-228, Cambridge University Press, Cambridge, UK, 2011.
44. Katz, P. E.: Ammoniakemissionen nach der Gülleanwendung auf Grünland, PhD thesis, ETH Zürich, Zürich, 1996.
45. Kristensen, L., Hansen, O. F., and Hojstrup, J.: Sampling bias on cup anemometer mean winds, Wind Energy, 6, 321-331, doi:10.1002/we.85, 2003. (Pubitemid 40290429)
46. 2O flux measurements by static chambers, Nutr. Cycl. Agroecosys., 82, 175-186, doi:10.1007/s10705-008-9179-x, 2008.
47. Laubach, J.: Testing of a Lagrangian model of dispersion in the surface layer with cattle methane emissions, Agr. Forest Meteorol., 150, 1428-1442, doi:10.1016/j.agrformet.2010.07.006, 2010.
48. Leip, A., Achermann, B., Billen, G., Bleeker, A., Bouwman, A. F., de Vries, W., Dragosits, U., Döring, U., Fernall, D., Geupel, M., Herolstab, J., Johnes, P., Gall, A. L., Monni, S., Neveceral, R., Orlandini, L., Prud'homme, M., Reuter, H. I., Simpson, D., Seufert, G., Spranger, T., Sutton, M. A., van Aardenne, J., Voss, M., and Winiwarter, W.: Integrating nitrogen fluxes at the European scale, in: The European Nitrogen Assessment - Sources, Effects and Policy Perspectives, edited by Sutton, M. A., Howard, C. M., Erisman, J. W., Billen, G., Bleeker, A., Grennfelt, P., van Grinsven, H., and Grizzetti, B., 345-376, Cambridge University Press, Cambridge, UK, 2011.
49. Leuning, R., Freney, J. R., Denmead, O. T., and Simpson, J. R.: A sampler for measuring atmospheric ammonia flux, Atmos. Environ., 19, 1117-1124, 1985.
50. Lim, Y., Moon, Y.-S., and Kim, T.-W.: Artificial neural network approach for prediction of ammonia emission from field-applied manure and relative significance assessment of ammonia emission factors, Europ. J. Agronomy, 26, 425-434, 2007. (Pubitemid 46497846)
51. Lockyer, D. R.: A system for the measurement in the field of losses of ammonia through volatilization, J. Sci. Food Agr., 35, 837-848, 1984.
52. Loubet, B., Cellier, P., Flura, D., and Genermont, S.: An evaluation of the wind-tunnel technique for estimating ammonia volatilization from land: Part 1. Analysis and improvement of accuracy, J. Agr. Eng. Res., 72, 71-81, 1999a. (Pubitemid 129675134)
53. Loubet, B., Cellier, P., Genermont, S., and Flura, D.: An evaluation of the wind-tunnel technique for estimating ammonia volatilization from land: Part 2. Influence of the tunnel on transfer processes, J. Agr. Eng. Res., 72, 83-92, 1999b. (Pubitemid 129675135)
54. Loubet, B., Milford, C., Sutton, M. A., and Cellier, P.: Investigation of the interaction between sources and sinks of atmospheric ammonia in an upland landscape using a simplified dispersionexchange model, J. Geophys. Res.-Atmos., 106, 24183-24195, 2001.
55. 3 over a pasture field and its effect on gradient flux measurements, Bio-geosciences, 6, 1295-1309, doi:10.5194/bg-6-1295-2009, 2009.
56. Loubet, B., Génermont, S., Ferrara, R., Bedos, G., Decuq, G., Personne, E., Fanucci, O., Durand, B., Rana, G., and Cellier, P.: An inverse model to estimate ammonia emissions from fields, Eur. J. Soil Sci., 61, 793-805, doi:10.1111/j.1365-2389.2010.01268.x, 2010.
57. McBain, M. C. and Desjardins, R. L.: The evaluation of a backward Lagrangian stochastic (bLS) model to estimate greenhouse gas emissions from agricultural sources using a synthetic tracer source, Agr. Forest Meteorol., 135, 61-72, doi:10.1016/j.agrformet.2005.10.003, 2005. (Pubitemid 43265830)
58. Menzi, H., Katz, P. E., Fahrni, M., Neftel, A., and Frick, R.: A simple empirical model based on regression analysis to estimate ammonia emissions after manure application, Atmos. Environ., 32, 301-307, 1998. (Pubitemid 28142469)
59. Milford, C., Theobald, M. R., Nemitz, E., Hargreaves, K. J., Hor-vath, L., Raso, J., Dämmgen, U., Neftel, A., Jones, S. K., Hensen, A., Loubet, B., Cellier, P., and Sutton, M. A.: Ammonia fluxes in relation to cutting and fertilization of an intensively managed grassland derived from an inter-comparison of gradient measurements, Biogeosciences, 6, 819-834, doi:10.5194/bg-6-819-2009, 2009.
60. Misselbrook, T. H., Smith, K. A., Jackson, D. R., and Gilhespy, S. L.: Ammonia emissions from irrigation of dilute pig slurries, Biosyst. Eng., 89, 473-484, doi:10.1016/j.biosystemseng.2004.08.015, 2004. (Pubitemid 39579663)
61. Misselbrook, T. H., Nicholson, F. A., Chambers, B. J., and Johnson, R. A.: Measuring ammonia emissions from land applied manure: an intercomparison of commonly used samplers and techniques, Environ. Pollut., 135, 389-397, doi:10.1016/j.envpol.2004.11.012, 2005. (Pubitemid 40327179)
62. Misselbrook, T. H., Chadwick, D. R., Chambers, B. J., Smith, K. A., Webb, J., Demmers, T., and Sneath, R. W.: Inventory of ammonia emissions from UK agriculture 2004, Inventory Submission Report DEFRA Contract AM0127, 2006.
63. 3 soil and soil surface gas measurements in a triticale wheat field, Atmos. Environ., 32, 499-505, 1998. (Pubitemid 28142495)
64. Neftel, A., Spirig, C., and Ammann, C.: Application and test of a simple tool for operational footprint evaluations, Environ. Pol-lut., 152, 644-652, doi:10.1016/j.envpol.2007.06.062, 2008. (Pubitemid 351442821)
65. Norman, M., Spirig, C., Wolff, V., Trebs, I., Flechard, C., Wisthaler, A., Schnitzhofer, R., Hansel, A., and Neftel, A.: Intercomparison of ammonia measurement techniques at an intensively managed grassland site (Oensingen, Switzerland), Atmos. Chem. Phys., 9, 2635-2645, doi:10.5194/acp-9-2635-2009, 2009.
66. Pfluke, P. D., Jokela, W. E., and Bosworth, S. C.: Ammonia Volatilization from Surface-Banded and Broadcast Application of Liquid Dairy Manure on Grass Forage, J. Environ. Qual., 40, 374-382, doi:10.2134/jeq2010.0102, 2011.
67. Pogany, A., Mohacsi, A., Jones, S. K., Nemitz, E., Varga, A., Bozoki, Z., Galbacs, Z., Weidinger, T., Horvath, L., and Sz-abo, G.: Evaluation of a diode laser based photoacoustic instrument combined with preconcentration sampling for measuring surface-atmosphere exchange of ammonia with the aerodynamic gradient method, Atmos. Environ., 44, 1490-1496, doi:10.1016/j.atmosenv.2010.01.038, 2010.
68. Raupach, M. R. and Legg, B. J.: The use and limitation of flux-gradient relationships in micrometeorology, Agric. Water Manage., 8, 119-131, 1984.
69. Reidy, B., Dämmgen, U., Döhler, H., Eurich-Menden, B., van Evert, F. K., Hutchings, N. J., Luesink, H. H., Menzi, H., Missel-brook, T. H., Monteny, G. J., and Webb, J.: Comparison of models used for national agricultural ammonia emission inventories in Europe: Liquid manure systems, Atmos. Environ., 42, 3452-3464, doi:10.1016/j.atmosenv.2007.04.009, 2008a. (Pubitemid 351467703)
70. Reidy, B., Rhim, B., and Menzi, H.: A new Swiss inventory of ammonia emissions from agriculture based on a survey on farm and manure management and farm-specific model calculations, Atmos. Environ., 42, 3266-3276, doi:10.1016/j.atmosenv.2007.04.036, 2008b. (Pubitemid 351458404)
71. Rochette, P., Chantigny, M. H., Angers, D. A., Bertrand, N., and Cote, D.: Ammonia volatilization and soil nitrogen dynamics following fall application of pig slurry on canola crop residues, Can. J. Soil Sci., 81, 515-523, 2001. (Pubitemid 34286969)
72. Rochette, P., Angers, D. A., Chantigny, M. H., MacDonald, J. D., Gasser, M., and Bertrand, N.: Reducing ammonia volatilization in a no-till soil by incorporating urea and pig slurry in shallow bands, Nutr. Cycl. Agroecosys., 84, 71-80, doi:10.1007/s10705-008-9227-6, 2009.
73. Rotach, M. W.: Turbulence within and above an urban canopy, no. 45 in Zürcher Geographische Schriften, Geographisches Institut ETH Zürich, Zürich, 1991.
74. Sanz, A., Misselbrook, T., Sanz, M. J., and Vallejo, A.: Use of an inverse dispersion technique for estimating ammonia emission from surface-applied slurry, Atmos. Environ., 44, 999-1002, doi:10.1016/j.atmosenv. 2009.08.044, 2010.
75. Schjoerring, J. K., Sommer, S. G., and Ferm, M.: A simple passive sampler for measuring ammonia emission in the field, Water Air Soil Poll., 62, 13-24, 1992.
76. Schmid, H. P.: Footprint modeling for vegetation atmosphere exchange studies: a review and perspective, Agr. Forest Meteorol., 113, 159-183, 2002. (Pubitemid 35293759)
77. Shaw, W. J., Spicer, C. W., and Kenny, D. V.: Eddy correlation fluxes of trace gases using a tandem mass spectrometer, Atmos. Environ., 32, 2887-2898, 1998. (Pubitemid 28391413)
78. Sherlock, R. R., Sommer, S. G., Khan, R. Z., Wood, C. W., Guertal, E. A., Freney, J. R., Dawson, C. O., and Cameron, K. C.: Ammonia, methane, and nitrous oxide emission from pig slurry applied to a pasture in New Zealand, J. Environ. Qual., 31, 1491-1501, 2002.
79. Sintermann, J., Ammann, C., Kuhn, U., Spirig, C., Hirschberger, R., Gärtner, A., and Neftel, A.: Determination of field scale ammonia emissions for common slurry spreading practice with two independent methods, Atmos. Meas. Tech., 4, 1821-1840, doi:10.5194/amt-4-1821-2011, 2011a.
80. Sintermann, J., Spirig, C., Jordan, A., Kuhn, U., Ammann, C., and Neftel, A.: Eddy covariance flux measurements of ammonia by high temperature chemical ionisation mass spectrometry, Atmos. Meas. Tech., 4, 599-616, doi:10.5194/amt-4-599-2011, 2011b.
81. Smith, K. A., Jackson, D. R., Misselbrook, T. H., Pain, B. F., and Johnson, R. A.: Reduction of ammonia emission by slurry application techniques, J. Agr. Eng. Res., 77, 277-287, 2000.
82. Smith, E., Gordon, R., Bourque, C., and Campbell, A.: Comparison of three simple field methods for ammonia volatilization from manure, Can. J. Soil Sci., 87, 469-477, 2007. (Pubitemid 47605427)
83. Smith, E., Gordon, R., Bourque, C., and Campbell, A.: Management strategies to simultaneously reduce ammonia, nitrous oxide and odour emissions from surface-applied swine manure, Can. J. Soil Sci., 88, 571-584, 2008.
84. Søgaard, H. T., Sommer, S. G., Hutchings, N. J., Huijsmans, J. F. M., Bussink, D. W., and Nicholson, F.: Ammonia volatilization from field-applied animal slurry - the ALFAM model, Atmos. Environ., 36, 3309-3319, 2002. (Pubitemid 34742042)
85. Sommer, S. G. and Olesen, J. E.: Effects of dry-matter content and temperature on ammonia loss from surface-applied cattle slurry, J. Environ. Qual., 20, 679-683, 1991.
86. Sommer, S. G. and Olesen, J. E.: Modelling ammonia volatilization from animal slurry applied with trail hoses to cereals, Atmos. Environ., 34, 2361-2372, 2000. (Pubitemid 30179714)
87. Sommer, S. G., Olesen, J. E., and Christensen, B. T.: Effects of temperature, wind speed and air humidity on ammonia volatilization from surface applied cattle slurry, J. Agr. Sci., 117, 91-100, 1991.
88. Sommer, S. G., Génermont, S., Cellier, P., Hutchings, N. J., Olesen, J. E., and Morvan, T.: Processes controlling ammonia emission from livestock slurry in the field, Eur. J. Agron., 19, 465-486, doi:10.1016/S1161- 0301(03)00037-6, 2003. (Pubitemid 36914307)
89. Sommer, S. G., Jensen, L. S., Clausen, S. B., and Søgaard, H. T.: Ammonia volatilization from surface-applied livestock slurry as affected by slurry composition and slurry infiltration depth, J. Agr. Sci., 144, 229-235, doi:10.1017/S0021859606006022, 2006.
90. Spirig, C., Flechard, C. R., Ammann, C., and Neftel, A.: The annual ammonia budget of fertilised cut grassland - Part 1: Micromete-orological flux measurements and emissions after slurry application, Biogeosciences, 7, 521-536, doi:10.5194/bg-7-521-2010, 2010.
91. Sutton, M. A., Fowler, D., and Moncrieff, J. B.: The exchange of atmospheric ammonia with vegetated surfaces. 1. Unfertilized vegetation, Q. J. Roy. Meteor. Soc., 119, 1023-1045, 1993. (Pubitemid 24398945)
92. Thomas, R. M., Trebs, I., Otjes, R., Jongejan, P. A. C., Brink, H. T., Phillips, G., Kortner, M., Meixner, F. X., and Nemitz, E.: An automated analyzer to measure surface-atmosphere exchange fluxes of water soluble inorganic aerosol compounds and reactive trace Gases, Environ. Sci. Technol., 43, 1412-1418, doi:10.1021/es8019403, 2009.
93. Thöni, L., Brang, P., Braun, S., Seitler, E., and Rihm, B.: Ammonia monitoring in Switzerland with passive samplers: Patterns, determinants and comparison with modelled concentrations, Environ. Monit. Assess., 98, 93-107, 2004. (Pubitemid 39158029)
94. Thorman, R. E., Hansen, M. N., Misselbrook, T. H., and Sommer, S. G.: Algorithm for estimating the crop height effect on ammonia emission from slurry applied to cereal fields and grassland, Agron. Sustain. Dev., 28, 373-378, doi:10.1051/agro:2008013, 2008. (Pubitemid 351950302)
95. 4 eddy covariance flux measurements, Atmos. Meas. Tech., 3, 1519-1531, doi:10.5194/amt-3-1519-2010, 2010.
96. Valli, L., Fabbri, C., and Bonazzi, G.: A national inventory of ammonia and greenhouse gas emissions from agriculture in Italy, in: Proceedings of the 9th Int. Conference on the FAO ESCORENA Network on recycling of agricultural, municipal and industrial residues in agriculture, 153-159, Gargano, Italy, 2001.
97. von Bobrutzki, K., Braban, C. F., Famulari, D., Jones, S. K., Blackall, T., Smith, T. E. L., Blom, M., Coe, H., Gallagher, M., Gha-laieny, M., McGillen, M. R., Percival, C. J., Whitehead, J. D., Ellis, R., Murphy, J., Mohacsi, A., Pogany, A., Junninen, H., Ranta-nen, S., Sutton, M. A., and Nemitz, E.: Field inter-comparison of eleven atmospheric ammonia measurement techniques, Atmos. Meas. Tech., 3, 91-112, doi:10.5194/amt-3-91-2010, 2010.
98. van der Molen, J., Beljaars, A. C. M., Chardon, W. J., Jury, W. A., and van Faasen, H. G.: Ammonia volatilization from arable land after application of cattle slurry. 2. Derivation of a transfer model, Neth. J. Agric. Sc., 38, 239-254, 1990.
99. van Pul, W. A. J., van den Broek, M. M. P., Volten, V., van der Meulen, A., Berkhout, A. J. C., van der Hoek K. W., Wichink-Kruit, J. J., Huijsmans, J. F. M., van Jaarsveld, J. A., de Haan, B. J., and Koelemeijer, R. B. A.: Het ammoniakgat: onderzoek en duiding (The ammonia gap: research and interpretation), RIVM report 680150002/2008, 95 pp., Bilthoven, 2008.
100. Webb, J., Pain, B., Bittman, S., and Morgan, J.: The impacts of manure application methods on emissions of ammonia, nitrous oxide and on crop response-A review, Agr. Ecosyst. Environ., 137, 39-46, doi:10.1016/j.agee.2010. 01.001, 2010.
101. Whitehead, J. D., Twigg, M., Famulari, D., Nemitz, E., Sutton, M. A., Gallagher, M. W., and Fowler, D.: Evaluation of laser absorption spectroscopic techniques for eddy covariance flux measurements of ammonia, Environ. Sci. Technol., 42, 2041-2046, doi:10.1021/es071596u, 2008. (Pubitemid 351497699)
102. Wichink-Kruit, R. J., Pul, W. A. J. V., Otjes, R. P., Hofschreuder, P., Jacobs, A. F. G., and Holtslag, A. A. M.: Ammonia fluxes and derived canopy compensation points over non-fertilized agricultural grassland in The Netherlands using the new gradient ammonia - high accuracy - monitor (GRAHAM), Atmos. Environ., 41, 1275-1287, doi:10.1016/j.atmosenv.2006.09.039, 2007. (Pubitemid 46038201)
103. Wilson, J. D. and Shum, W. K. N.: A re-examination of the integrated horizontal flux method for estimating volatilization from circular plots, Agr. Forest Meteorol., 57, 281-295, 1992.
104. Wilson, J. D., Thurtell, G. W., Kidd, G. E., and Beauchamp, E. G.: Estimation of the rate of gaseous mass-transfer from a surface source plot to the atmosphere, Atmos. Environ., 16, 1861-1867, 1982.
105. Wilson, J. D., Catchpoole, V. R., Denmead, O. T., and Thurtell, G. W.: Verification of a simple micrometeorological method for estimating the rate of gaseous mass-transfer from the ground to the atmosphere, Agr. Forest Meteorol., 29, 183-189, 1983.
106. Wulf, S., Maeting, M., and Clemens, J.: Application technique and slurry co-fermentation effects on ammonia, nitrous oxide, and methane emissions after spreading: I. Ammonia volatilization, J. Environ. Qual., 31, 1789-1794, 2002. (Pubitemid 35403603)