Model study of tropospheric trace species distributions during PEM-West A. Liu, S., C., McKeen, S., A., Hsie, E., Y., Lin, X., Kelly, K., K., Bradshaw, J., D., Sandholm, S., T., Browell, E., V., Gregory, G., L., Sachse, G., W., Bandy, A., R., Thornton, D., C., Blake, D., R., Rowland, F., S., Newell, R., Heikes, B., G., Singh, H., & Talbot, R., W. Journal of Geophysical Research, 101(D1):2073-2085, 1996.
abstract   bibtex   
A three-dimensional mesoscale transport/photochemical model is used to study the transport and photochemical transformation of trace species over eastern Asia and western Pacific for the period from September 20 to October 6, 1991, of the Pacific Exploratory Mission-West A experiment. The influence of emissions from the continental boundary layer that was evident in the observed trace species distributions in the lower troposphere over the ocean is well simulated by the model. In the upper troposphere, species such as O/sub 3/, NO/sub y/ (total reactive nitrogen species), and SO/sub 2/ which have a significant source in the stratosphere are also simulated well in the model, suggesting that the upper tropospheric abundances of these species are strongly influenced by stratospheric fluxes and upper tropospheric sources. In the case of SO/sub 2/ the stratospheric flux is identified to be mostly from the Mount Pinatubo eruption. Concentrations in the upper troposphere for species such as CO and hydrocarbons, which are emitted in the continental boundary layer and have a sink in the troposphere, are significantly underestimated by the model. Two factors have been identified to contribute significantly to the underestimate: one is emissions upwind of the model domain (eastern Asia and western Pacific); the other is that vertical transport is underestimated in the model. Model results are also grouped by back trajectories to study the contrast between compositions of marine and continental air masses.
@article{
 title = {Model study of tropospheric trace species distributions during PEM-West A},
 type = {article},
 year = {1996},
 keywords = {3D mesoscale transport photochemical model,AD 1991 09 20 to 10 06,Atmospheric chemistry,Atmospheric movements,Back trajectories,Continental air mass,Continental boundary layer,Eastern Asia,Emissions,Hydrocarbons,Marine air mass,Mount Pinatubo eruption,NO/sub y/,O/sub 3/,PEM-West A,Pacific Exploratory Mission-West A experiment,Photochemistry,SO/sub 2/,Stratospheric fluxes,Total reactive nitrogen species,Troposphere,Tropospheric trace species distributions,Upper tropospheric abundances,Vertical transport,Western Pacific,co},
 pages = {2073-2085},
 volume = {101},
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 abstract = {A three-dimensional mesoscale transport/photochemical model is used to study the transport and photochemical transformation of trace species over eastern Asia and western Pacific for the period from September 20 to October 6, 1991, of the Pacific Exploratory Mission-West A experiment. The influence of emissions from the continental boundary layer that was evident in the observed trace species distributions in the lower troposphere over the ocean is well simulated by the model. In the upper troposphere, species such as O/sub 3/, NO/sub y/ (total reactive nitrogen species), and SO/sub 2/ which have a significant source in the stratosphere are also simulated well in the model, suggesting that the upper tropospheric abundances of these species are strongly influenced by stratospheric fluxes and upper tropospheric sources. In the case of SO/sub 2/ the stratospheric flux is identified to be mostly from the Mount Pinatubo eruption. Concentrations in the upper troposphere for species such as CO and hydrocarbons, which are emitted in the continental boundary layer and have a sink in the troposphere, are significantly underestimated by the model. Two factors have been identified to contribute significantly to the underestimate: one is emissions upwind of the model domain (eastern Asia and western Pacific); the other is that vertical transport is underestimated in the model. Model results are also grouped by back trajectories to study the contrast between compositions of marine and continental air masses.},
 bibtype = {article},
 author = {Liu, S C and McKeen, S A and Hsie, E Y and Lin, X and Kelly, K K and Bradshaw, J D and Sandholm, S T and Browell, E V and Gregory, G L and Sachse, G W and Bandy, A R and Thornton, D C and Blake, D R and Rowland, F S and Newell, R and Heikes, B G and Singh, H and Talbot, R W},
 journal = {Journal of Geophysical Research},
 number = {D1}
}

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