A comprehensive Eulerian modeling framework for airborne mercury species: Development and testing of the Tropospheric Chemistry module (TCM)

Petersen, G.; Munthe, John; Pleijel, Karin; Bloxam, R.; Kumar, Aerattukkara Vinod

doi:10.1016/s1352-2310(97)00049-6

Cited by 64 publications

(40 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The model also includes incloud oxidation of Hg(0) by OH, O 3 , and Cl with associated rate constants from Gårdfeldt et al (2001), Munthe (1992), and Lin and Pehkonen (1999), respectively. In-cloud reduction by SO 2− 3 is also implemented, with an associated rate constant from Petersen et al (1998). Reactant fields are imported from MOZART (Emmons et al, 2010).…”

Section: Glemosmentioning

confidence: 99%

Chemical cycling and deposition of atmospheric mercury in polar regions: review of recent measurements and comparison with models

et al. 2016

View full text Add to dashboard Cite

show abstract

Section: Glemosmentioning

confidence: 99%

Chemical cycling and deposition of atmospheric mercury in polar regions: review of recent measurements and comparison with models

et al. 2016

View full text Add to dashboard Cite

show abstract

“…The first version of GASPAR therefore included gas-solid equilibria for low humidity conditions and gas-aqueous, aqueous-solid equilibria for deliquescence conditions; as well as a relatively simple description of Hg aqueous phase chemistry similar to that used by Petersen et al (1998), which was a reduced version of the Hg chemistry in cloud droplets model by Pleijel and Munthe (1995). The aqueous phase chemistry model had been updated to include the aqueous phase oxidation of elemental mercury by HOCl and the aqueous phase reduction of oxidised mercury by HO 2 (Lin and Pehkonen, 1998).…”

Section: Chemical and Physical Atmospheric Processesmentioning

confidence: 99%

“…Several advances in theoretical and experimental techniques have been made in recent years to assess spatial and temporal distributions of ambient concentrations and deposition fluxes of mercury and its compounds. Temporal and spatial scales of mercury transport in the European atmosphere and its transfer to aquatic and terrestrial receptors were found to depend primarily on the chemical and physical characteristics of the three main forms of atmospheric mercury (Petersen, et al, 1998;Pirrone et al, 2000a;Hedgecock and Pirrone, 2001). Therefore the outcome of experimental and theoretical research indicates that natural and human (anthropogenic) activities can redistribute this element in the atmospheric, soil and water ecosystems through a complex combination of chemical, physical and biological mechanisms.…”

Section: Introductionmentioning

confidence: 99%

Dynamic processes of mercury over the Mediterranean region: results from the Mediterranean Atmospheric Mercury Cycle System (MAMCS) project

Pirrone

Ferrara²,

Hedgecock

et al. 2003

Atmospheric Environment

View full text Add to dashboard Cite

“…Earlier models of atmospheric Hg included parameterizations for the sorption of dissolved Hg species to soot particles suspended in cloud water (Petersen et al, 1998;Seigneur et al, 2001;Bullock and Brehme, 2002;Dastoor and Larocque, 2004) based on experimental results from Petersen et al (1995) and Seigneur et al (1998). In more recent years, models of atmospheric Hg have taken various approaches to treating Hg(II) gas-particle partitioning.…”

mentioning

confidence: 99%

Gas-particle partitioning of atmospheric Hg(II) and its effect on global mercury deposition

Amos

Jacob²,

Holmes³

et al. 2012

Atmos. Chem. Phys.

412

459

View full text Add to dashboard Cite

Abstract. Atmospheric deposition of Hg(II) represents a major input of mercury to surface environments. The phase of Hg(II) (gas or particle) has important implications for deposition. We use long-term observations of reactive gaseous mercury (RGM, the gaseous component of Hg(II)), particle-bound mercury (PBM, the particulate component of Hg(II)), fine particulate matter (PM 2.5 ), and temperature (T ) at five sites in North America to derive an empirical gas-particle partitioning relationship log 10 (K −1 ) = (10±1)-(2500±300)/T where K = (PBM/PM 2.5 )/RGM with PBM and RGM in common mixing ratio units, PM 2.5 in µg m −3 , and T in K. This relationship is within the range of previous work but is based on far more extensive data from multiple sites. We implement this empirical relationship in the GEOS-Chem global 3-D Hg model to partition Hg(II) between the gas and particle phases. The resulting gas-phase fraction of Hg(II) ranges from over 90 % in warm air with little aerosol to less than 10 % in cold air with high aerosol. Hg deposition to high latitudes increases because of more efficient scavenging of particulate Hg(II) by precipitating snow. Model comparison to Hg observations at the North American surface sites suggests that subsidence from the free troposphere (warm air, low aerosol) is a major factor driving the seasonality of RGM, while elevated PBM is mostly associated with high aerosol loads. Simulation of RGM and PBM at these sites is improved by including fast in-plume reduction of Hg(II) emitted from coal combustion and by assuming that anthropogenic particulate Hg(p) behaves as semivolatile Hg(II) rather than as a refractory particulate component. We improve the simulation of Hg wet deposition fluxes in the US relative to a previous version of GEOS-Chem; this largely reflects independent improvement of the washout algorithm. The observed wintertime minimum in wet deposition fluxes is attributed to inefficient snow scavenging of gas-phase Hg(II).

show abstract

A comprehensive Eulerian modeling framework for airborne mercury species: Development and testing of the Tropospheric Chemistry module (TCM)

Cited by 64 publications

References 16 publications

Chemical cycling and deposition of atmospheric mercury in polar regions: review of recent measurements and comparison with models

Chemical cycling and deposition of atmospheric mercury in polar regions: review of recent measurements and comparison with models

Dynamic processes of mercury over the Mediterranean region: results from the Mediterranean Atmospheric Mercury Cycle System (MAMCS) project

Gas-particle partitioning of atmospheric Hg(II) and its effect on global mercury deposition

Contact Info

Product

Resources

About