The hidden cost of using low-resolution concentration data in the estimation of NH₃ dry deposition fluxes.

ABSTRACT: Long-term monitoring stations for atmospheric pollutants are often equipped with low-resolution concentration samplers. In this study, we analyse the errors associated with using monthly average ammonia concentrations as input variables for bidirectional biosphere-atmosphere exchange models, which are commonly used to estimate dry deposition fluxes. Previous studies often failed to account for a potential correlation between ammonia exchange velocities and ambient concentrations. We formally derive the exact magnitude of these errors from statistical considerations and propose a correction scheme based on parallel measurements using high-frequency analysers. In case studies using both modelled and measured ammonia concentrations and micrometeorological drivers from sites with varying pollu

SUBMITTER: Schrader F 

PROVIDER: S-EPMC5772562 | biostudies-literature | 2018 Jan

REPOSITORIES: biostudies-literature