Upper tropospheric ozone production following mesoscale convection during STEP/EMEX

K. E. Pickering; A. M. Thompson; Tao Wei-Kuo Tao; T. L. Kucsera

doi:10.1029/93JD00875

Upper tropospheric ozone production following mesoscale convection during STEP/EMEX

K. E. Pickering, A. M. Thompson, Tao Wei-Kuo Tao, T. L. Kucsera

Meteorology and Atmospheric Science

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54 Scopus citations

Abstract

Model simulations of the EMEX 9 convective system indicate lower tropospheric air relatively rich in CO and low in NO_x exiting in cloud outflow, slightly depressing the rate of O₃ formation in the middle and upper troposphere. Other convective complexes, 800-900 km upstream, caused even greater perturbations to measured profiles of CO, NO_x, O₃, and H₂O and implied a 15-20% reduction in the rate of O₃ production from 14.5 to 17 km. The greatest factor affecting O₃ formation in the upper troposphere in the STEP/EMEX flight might have been lightning-produced NO_x. We estimate that O₃ production from 12 to 17 km is 2-3 times more rapid than it would be with no lightning. Earlier in the convective season, the chemical consequences of a single episode might have been more substantial. -from Authors

Original language	English (US)
Pages (from-to)	8737-8749
Number of pages	13
Journal	Journal of Geophysical Research
Volume	98
Issue number	D5
DOIs	https://doi.org/10.1029/93JD00875
State	Published - Jan 1 1993

All Science Journal Classification (ASJC) codes

Geophysics
Forestry
Oceanography
Aquatic Science
Ecology
Water Science and Technology
Soil Science
Geochemistry and Petrology
Earth-Surface Processes
Atmospheric Science
Earth and Planetary Sciences (miscellaneous)
Space and Planetary Science
Palaeontology

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title = "Upper tropospheric ozone production following mesoscale convection during STEP/EMEX",

abstract = "Model simulations of the EMEX 9 convective system indicate lower tropospheric air relatively rich in CO and low in NOx exiting in cloud outflow, slightly depressing the rate of O3 formation in the middle and upper troposphere. Other convective complexes, 800-900 km upstream, caused even greater perturbations to measured profiles of CO, NOx, O3, and H2O and implied a 15-20% reduction in the rate of O3 production from 14.5 to 17 km. The greatest factor affecting O3 formation in the upper troposphere in the STEP/EMEX flight might have been lightning-produced NOx. We estimate that O3 production from 12 to 17 km is 2-3 times more rapid than it would be with no lightning. Earlier in the convective season, the chemical consequences of a single episode might have been more substantial. -from Authors",

author = "Pickering, {K. E.} and Thompson, {A. M.} and {Wei-Kuo Tao}, Tao and Kucsera, {T. L.}",

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T1 - Upper tropospheric ozone production following mesoscale convection during STEP/EMEX

AU - Pickering, K. E.

AU - Thompson, A. M.

AU - Wei-Kuo Tao, Tao

AU - Kucsera, T. L.

PY - 1993/1/1

Y1 - 1993/1/1

N2 - Model simulations of the EMEX 9 convective system indicate lower tropospheric air relatively rich in CO and low in NOx exiting in cloud outflow, slightly depressing the rate of O3 formation in the middle and upper troposphere. Other convective complexes, 800-900 km upstream, caused even greater perturbations to measured profiles of CO, NOx, O3, and H2O and implied a 15-20% reduction in the rate of O3 production from 14.5 to 17 km. The greatest factor affecting O3 formation in the upper troposphere in the STEP/EMEX flight might have been lightning-produced NOx. We estimate that O3 production from 12 to 17 km is 2-3 times more rapid than it would be with no lightning. Earlier in the convective season, the chemical consequences of a single episode might have been more substantial. -from Authors

AB - Model simulations of the EMEX 9 convective system indicate lower tropospheric air relatively rich in CO and low in NOx exiting in cloud outflow, slightly depressing the rate of O3 formation in the middle and upper troposphere. Other convective complexes, 800-900 km upstream, caused even greater perturbations to measured profiles of CO, NOx, O3, and H2O and implied a 15-20% reduction in the rate of O3 production from 14.5 to 17 km. The greatest factor affecting O3 formation in the upper troposphere in the STEP/EMEX flight might have been lightning-produced NOx. We estimate that O3 production from 12 to 17 km is 2-3 times more rapid than it would be with no lightning. Earlier in the convective season, the chemical consequences of a single episode might have been more substantial. -from Authors

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Upper tropospheric ozone production following mesoscale convection during STEP/EMEX

Abstract

All Science Journal Classification (ASJC) codes

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