A case study of transport of tropical marine boundary layer and lower tropospheric air masses to the northern midlatitude upper troposphere. Grant, W., B., Browell, E., V., Butler, C., F., Fenn, M., A., Clayton, M., B., Hannan, J., R., Fuelberg, H., E., Blake, D., R., Blake, N., J., Gregory, G., L., Heikes, B., G., Sachse, G., W., Singh, H., B., Snow, J., & Talbot, R., W. Journal of Geophysical Research, 105(D3):3757-3769, 2000.
abstract   bibtex   
Low-ozone (<20 ppbv) air masses were observed in the upper troposphere in northern midlatitudes over the eastern United States and the North Atlantic Ocean on several occasions in October 1997 during the NASA Subsonic Assessment, Ozone and Nitrogen Oxide Experiment (SONEX) mission. Three cases of low-ozone air masses were shown to have originated in the tropical Pacific marine boundary layer or lower troposphere and advected poleward along a warm conveyor belt during a synoptic-scale disturbance. The tropopause was elevated in the region with the low-ozone air mass. Stratospheric intrusions accompanied the disturbances. On the basis of storm track and stratospheric intrusion climatologies, such events appear to be more frequent from September through March than the rest of the year.
@article{
 title = {A case study of transport of tropical marine boundary layer and lower tropospheric air masses to the northern midlatitude upper troposphere},
 type = {article},
 year = {2000},
 keywords = {Air mass,Atmosphere,Atmospheric boundary layer,Atmospheric movements,Circulation,Low-ozone,Lower troposphere,Marine boundary layer,Middle latitude,Midlatitude,North Atlantic,Northern hemisphere,O/sub 3/,Season,Synoptic-scale disturbance,Transport,Tropical Pacific,Tropical airmass,Tropopause,Troposphere,United States,Upper troposphere,sonex,usa},
 pages = {3757-3769},
 volume = {105},
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 created = {2015-02-12T02:07:12.000Z},
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 last_modified = {2015-02-12T20:24:35.000Z},
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 abstract = {Low-ozone (<20 ppbv) air masses were observed in the upper troposphere in northern midlatitudes over the eastern United States and the North Atlantic Ocean on several occasions in October 1997 during the NASA Subsonic Assessment, Ozone and Nitrogen Oxide Experiment (SONEX) mission. Three cases of low-ozone air masses were shown to have originated in the tropical Pacific marine boundary layer or lower troposphere and advected poleward along a warm conveyor belt during a synoptic-scale disturbance. The tropopause was elevated in the region with the low-ozone air mass. Stratospheric intrusions accompanied the disturbances. On the basis of storm track and stratospheric intrusion climatologies, such events appear to be more frequent from September through March than the rest of the year.},
 bibtype = {article},
 author = {Grant, W B and Browell, E V and Butler, C F and Fenn, M A and Clayton, M B and Hannan, J R and Fuelberg, H E and Blake, D R and Blake, N J and Gregory, G L and Heikes, B G and Sachse, G W and Singh, H B and Snow, J and Talbot, R W},
 journal = {Journal of Geophysical Research},
 number = {D3}
}

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