NDLI: A Sensitivity Analysis on Atmospheric Transportation of Mercury in Guiyang China

Content Provider	IEEE Xplore Digital Library
Author	Lu Xiaotong Jiang Weimei Li Qitai Sun Youping
Copyright Year	2008
Description	Author affiliation: Dept. of Atmos. Sci., Nanjing Univ., Nanjing (Lu Xiaotong)
Abstract	The article presents the results of sensitivity study on the factors that affect air mercury transportation by using model MESO-NH to simulate air mercury transport for Guyang city during Jan. 28-30, 2004. The factors are emission, dry deposition velocity of $Hg^{0},$ dry deposition velocity of HgP, rate constant of $Hg^{0}$ oxidation by OH. The results show that (1) air mercury concentrations are sensitive to dry deposition velocity of $Hg^{0}$ in the places where air mercury concentrations are high, and are not sensitive in the place where air mercury concentrations are low. (2)Only the area near sources is affected by reducing mercury emission from anthropogenic sources within Guiyang by 50%, almost no effect on the area far from the sources where air mercury concentrations are resulted from global and regional long-rang transport. (3) Air mercury concentrations are sensitive to the rate constant of $Hg^{0}$ oxidation by OH generally. With bigger rate constant, $Hg^{0}$ has lower percentage in the air, and Hg(II) and HgP have higher percentages; contrarily with smaller rate constant $k_{HgP}._{0H}=2.94E-14$ $mol/cm^{3}/s,$ which the simulation results are close to the monitoring values. (4) The results are similar in the area far from sources with both dry deposition velocities of $Hd_{HgP}=0.625$ cm/s and $Vd_{HgP}=0.225$ cm/s; but with $Vd_{HgP}=0.225$ cm/s, $Hg^{0}$ percentage is lower, and the percentages of Hg(II) and HgP are higher. The simulation results with $Vd_{HgP}=0.625$ cm/s are closer to the monitoring values.
Starting Page	3973
Ending Page	3976
File Size	174080
Page Count	4
File Format	PDF
ISBN	9781424417476
DOI	10.1109/ICBBE.2008.495
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-05-16
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Chemistry Sensitivity analysis Atmospheric modeling Transportation Atmosphere Cities and towns Boundary conditions Oxidation Protection Monitoring
Content Type	Text
Resource Type	Article

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