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    Description

    Ozone flux estimates from the i-Tree model were compared with ozone flux measurements using the Eddy Covariance technique in a periurban Mediterranean forest near Rome (Castelporziano). For the first time i-Tree model outputs were compared with field measurements in relation to dry deposition estimates. Results showed generally a good agreement between predicted and measured ozone fluxes (least sum square = 5.6 e-4) especially when cumulative values over the whole measurement campaign are considered. However at daily and hourly time-step some overestimations were observed in estimated values especially in hot dry periods. The use of different m values in the Ball-Berry formula in the different periods, produced the best fit between predicted and measured ozone fluxes. This suggests that a variable value for the coefficient m accounting for water availability may be appropriate to improve model estimates for Mediterranean and drought prone regions.

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    Citation

    Morani, A.; Nowak, D.; Hirabayashi, S.; Guidolotti, G.; Medori, M.; Muzzini, V.; Fares, S.; Mugnozza, G. Scarascia; Calfapietra, C. 2014. Comparing i-Tree modeled ozone deposition with field measurements in a periurban Mediterranean forest. Environmental Pollution. 195: 202-209.

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    Keywords

    Ball-Berry, Ozone flux, Mediterranean region

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https://www.fs.usda.gov/treesearch/pubs/46711