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GNAQPMS-Hg v1.0, a global nested atmospheric mercury transport model: model description, evaluation and application to trans-boundary transport of Chinese anthropogenic emissions

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GNAQPMS-Hg v1.0, a global nested atmospheric mercury transport model : model description, evaluation and application to trans-boundary transport of Chinese anthropogenic emissions. / Chen, Huansheng; Wang, Zifa; Li, Jie; Tang, Xiao; Ge, Baozhu; Wu, X. L.; Wild, O.; Carmichael, G. R.

In: Geoscientific Model Development, Vol. 8, No. 9, 11.09.2015, p. 2857-2876.

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Chen, Huansheng ; Wang, Zifa ; Li, Jie ; Tang, Xiao ; Ge, Baozhu ; Wu, X. L. ; Wild, O. ; Carmichael, G. R. / GNAQPMS-Hg v1.0, a global nested atmospheric mercury transport model : model description, evaluation and application to trans-boundary transport of Chinese anthropogenic emissions. In: Geoscientific Model Development. 2015 ; Vol. 8, No. 9. pp. 2857-2876.

Bibtex

@article{bf75038240ee4eb19023fa0e9515ac51,
title = "GNAQPMS-Hg v1.0, a global nested atmospheric mercury transport model: model description, evaluation and application to trans-boundary transport of Chinese anthropogenic emissions",
abstract = "Atmospheric mercury (Hg) is a toxic pollutant and can be transported over the whole globe due to its long lifetime in the atmosphere. For the purpose of assessing Hg hemispheric transport and better characterizing regional Hg pollution, a global nested atmospheric Hg transport model (GNAQPMS-Hg - Global Nested Air Quality Prediction Modeling System for Hg) has been developed. In GNAQPMS-Hg, the gas-and aqueous-phase Hg chemistry representing the transformation among three forms of Hg: elemental mercury (Hg(0)), divalent mercury (Hg(II)), and primary particulate mercury (Hg(P)) are calculated. A detailed description of the model, including mercury emissions, gas-and aqueous-phase chemistry, and dry and wet deposition is given in this study. Worldwide observations including extensive data in China have been collected for model evaluation. Comparison results show that the model reasonably simulates the global mercury budget and the spatio-temporal variation of surface mercury concentrations and deposition. Overall, model predictions of annual total gaseous mercury (TGM) and wet deposition agree with observations within a factor of 2, and within a factor of 5 for oxidized mercury and dry deposition. The model performs significantly better in North America and Europe than in East Asia. This can probably be attributed to the large uncertainties in emission inventories, coarse model resolution and to the inconsistency between the simulation and observation periods in East Asia. Compared to the global simulation, the nested simulation shows improved skill at capturing the high spatial variability of surface Hg concentrations and deposition over East Asia. In particular, the root mean square error (RMSE) of simulated Hg wet deposition over East Asia is reduced by 24% in the nested simulation. Model sensitivity studies indicate that Chinese primary anthropogenic emissions account for 30 and 62% of surface mercury concentrations and deposition over China, respectively. Along the rim of the western Pacific, the contributions from Chinese sources are 11 and 15.2% over the Korean Peninsula, 10.4 and 8.2% over Southeast Asia, and 5.7 and 5.9% over Japan. But for North America, Europe and western Asia, the contributions from China are all below 5%.",
keywords = "GAS-PHASE REACTION, ELEMENTAL MERCURY, EAST-ASIA, GASEOUS MERCURY, WET DEPOSITION, UNITED-STATES, AIR-QUALITY, OXIDATION, CHEMISTRY, UNCERTAINTIES",
author = "Huansheng Chen and Zifa Wang and Jie Li and Xiao Tang and Baozhu Ge and Wu, {X. L.} and O. Wild and Carmichael, {G. R.}",
year = "2015",
month = sep,
day = "11",
doi = "10.5194/gmd-8-2857-2015",
language = "English",
volume = "8",
pages = "2857--2876",
journal = "Geoscientific Model Development",
issn = "1991-959X",
publisher = "Copernicus Gesellschaft mbH",
number = "9",

}

RIS

TY - JOUR

T1 - GNAQPMS-Hg v1.0, a global nested atmospheric mercury transport model

T2 - model description, evaluation and application to trans-boundary transport of Chinese anthropogenic emissions

AU - Chen, Huansheng

AU - Wang, Zifa

AU - Li, Jie

AU - Tang, Xiao

AU - Ge, Baozhu

AU - Wu, X. L.

AU - Wild, O.

AU - Carmichael, G. R.

PY - 2015/9/11

Y1 - 2015/9/11

N2 - Atmospheric mercury (Hg) is a toxic pollutant and can be transported over the whole globe due to its long lifetime in the atmosphere. For the purpose of assessing Hg hemispheric transport and better characterizing regional Hg pollution, a global nested atmospheric Hg transport model (GNAQPMS-Hg - Global Nested Air Quality Prediction Modeling System for Hg) has been developed. In GNAQPMS-Hg, the gas-and aqueous-phase Hg chemistry representing the transformation among three forms of Hg: elemental mercury (Hg(0)), divalent mercury (Hg(II)), and primary particulate mercury (Hg(P)) are calculated. A detailed description of the model, including mercury emissions, gas-and aqueous-phase chemistry, and dry and wet deposition is given in this study. Worldwide observations including extensive data in China have been collected for model evaluation. Comparison results show that the model reasonably simulates the global mercury budget and the spatio-temporal variation of surface mercury concentrations and deposition. Overall, model predictions of annual total gaseous mercury (TGM) and wet deposition agree with observations within a factor of 2, and within a factor of 5 for oxidized mercury and dry deposition. The model performs significantly better in North America and Europe than in East Asia. This can probably be attributed to the large uncertainties in emission inventories, coarse model resolution and to the inconsistency between the simulation and observation periods in East Asia. Compared to the global simulation, the nested simulation shows improved skill at capturing the high spatial variability of surface Hg concentrations and deposition over East Asia. In particular, the root mean square error (RMSE) of simulated Hg wet deposition over East Asia is reduced by 24% in the nested simulation. Model sensitivity studies indicate that Chinese primary anthropogenic emissions account for 30 and 62% of surface mercury concentrations and deposition over China, respectively. Along the rim of the western Pacific, the contributions from Chinese sources are 11 and 15.2% over the Korean Peninsula, 10.4 and 8.2% over Southeast Asia, and 5.7 and 5.9% over Japan. But for North America, Europe and western Asia, the contributions from China are all below 5%.

AB - Atmospheric mercury (Hg) is a toxic pollutant and can be transported over the whole globe due to its long lifetime in the atmosphere. For the purpose of assessing Hg hemispheric transport and better characterizing regional Hg pollution, a global nested atmospheric Hg transport model (GNAQPMS-Hg - Global Nested Air Quality Prediction Modeling System for Hg) has been developed. In GNAQPMS-Hg, the gas-and aqueous-phase Hg chemistry representing the transformation among three forms of Hg: elemental mercury (Hg(0)), divalent mercury (Hg(II)), and primary particulate mercury (Hg(P)) are calculated. A detailed description of the model, including mercury emissions, gas-and aqueous-phase chemistry, and dry and wet deposition is given in this study. Worldwide observations including extensive data in China have been collected for model evaluation. Comparison results show that the model reasonably simulates the global mercury budget and the spatio-temporal variation of surface mercury concentrations and deposition. Overall, model predictions of annual total gaseous mercury (TGM) and wet deposition agree with observations within a factor of 2, and within a factor of 5 for oxidized mercury and dry deposition. The model performs significantly better in North America and Europe than in East Asia. This can probably be attributed to the large uncertainties in emission inventories, coarse model resolution and to the inconsistency between the simulation and observation periods in East Asia. Compared to the global simulation, the nested simulation shows improved skill at capturing the high spatial variability of surface Hg concentrations and deposition over East Asia. In particular, the root mean square error (RMSE) of simulated Hg wet deposition over East Asia is reduced by 24% in the nested simulation. Model sensitivity studies indicate that Chinese primary anthropogenic emissions account for 30 and 62% of surface mercury concentrations and deposition over China, respectively. Along the rim of the western Pacific, the contributions from Chinese sources are 11 and 15.2% over the Korean Peninsula, 10.4 and 8.2% over Southeast Asia, and 5.7 and 5.9% over Japan. But for North America, Europe and western Asia, the contributions from China are all below 5%.

KW - GAS-PHASE REACTION

KW - ELEMENTAL MERCURY

KW - EAST-ASIA

KW - GASEOUS MERCURY

KW - WET DEPOSITION

KW - UNITED-STATES

KW - AIR-QUALITY

KW - OXIDATION

KW - CHEMISTRY

KW - UNCERTAINTIES

U2 - 10.5194/gmd-8-2857-2015

DO - 10.5194/gmd-8-2857-2015

M3 - Journal article

VL - 8

SP - 2857

EP - 2876

JO - Geoscientific Model Development

JF - Geoscientific Model Development

SN - 1991-959X

IS - 9

ER -