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. Author manuscript; available in PMC: 2020 Dec 9.
Published in final edited form as: Sci Total Environ. 2019 Jun 26;690:1005–1018. doi: 10.1016/j.scitotenv.2019.06.337

Table 2.

Statistical results of the relative standard deviation (%) of annual dry deposition fluxes produced by four inferential models applied at sites within the NitroEurope networka. Summarized from Flechard et al. (2011).

Site type N NH3 - N HNO3 - N NO2 - N NH4+ - N NO3− - N Total N
Mean Med Min Max Mean Med Min Max Mean Med Min Max Mean Med Min Max Mean Med Min Max Mean Med Min Max
F 29 50 49 35 75 28 27 19 46 76 73 58 100 86 85 67 107 78 74 63 115 43 44 26 59
SN 9 50 49 44 67 10 12 0 18 79 81 67 85 48 43 20 84 50 38 29 128 37 35 29 49
G 8 190 81 51 872 7 7 0 16 69 77 38 86 36 34 22 77 38 38 18 55 67 52 38 157
C 8 137 109 48 367 11 12 0 15 75 76 67 85 64 56 49 118 62 59 46 99 63 54 44 124
ALL 54 83 51 35 872 20 20 0 46 76 76 38 100 69 76 20 118 65 67 18 128 49 44 26 157
a

Note: The four models are the UK CBED scheme, the Dutch IDEM model, the dry deposition module of the Environment Canada model, and the surface exchange scheme of the EMEP model used under the CLRTAP. For details see Flechard et al. (2011). N: number of sites at which the models were compared, F: forest, SN: semi-natural short vegetation, G: grassland, C: cropland. The relative standard deviation (RSD) for each N species and for each site is calculated as SD/Mean × 100%, where SD and Mean are the standard deviation and mean value of the annual fluxes produced by the four models. Statistics of the RSD are then calculated and reported in the table above for each site type and for all sites (ALL) where Mean is the mean value of the RSD, Med: median value, Min: minimum value, and Max: maximum value.