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全球陆地系统大气汞沉降的不确定性研究论文被ACP接受(Our work on the uncertainties in the observation and simulation of atmospheric mercury deposition over the land surfaces was accepted by Atmos Chem Phys)

Published:2020-04-13  Views:1339




   Uncertainties in the observation and simulation of global speciated atmospheric Hg deposition to the land surfaces have been systemically estimated based on assessment of commonly used observation methods, campaign results for comparison of different methods, model evaluation with observation data, and sensitivity analysis for model parameterization. The overall uncertainties in the observation and simulation of the total global Hg deposition were estimated to be ± (25–50) % and ± (45–70) %, respectively, with the largest contributions from dry deposition.The uncertainties of GOM and PBM dry deposition measurements come from the interference of unwanted Hg forms or incomplete capture of targeted Hg forms, while that of GEM dry deposition observation originates from the lack of a standardized experimental system and operating procedure. The large biases in the measurements of GOM and PBM concentrations and the high sensitivities of key parameters in resistance models lead to high uncertainties in GOM and PBM dry deposition simulation. 

    Congratulations to  Peisheng!



Global distribution of the observed Hg wet deposition fluxes around the world


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