Assessing the regional impacts of Mexico City emissions on air quality and chemistry

M. Mena-Carrasco, G. R. Carmichael, J. E. Campbell, D. Zimmerman, Y. Tang, B. Adhikary, A. D'Allura, L. T. Molina, M. Zavala, A. García, F. Flocke, T. Campos, A. J. Weinheimer, R. Shetter, E. Apel, D. D. Montzka, D. J. Knapp, W. Zheng

Resultado de la investigación: Article

25 Citas (Scopus)

Resumen

The impact of Mexico City (MCMA) emissions is examined by studying its effects on air quality, photochemistry, and on ozone production regimes by combining model products and aircraft observations from the MILAGRO experiment during March 2006. The modeled influence of MCMA emissions to enhancements in surface level NOx, CO, and O3 concentrations (10-30% increase) are con-fined to distances <200 km, near surface. However, the extent of the influence is significantly larger at higher altitudes. BroaderMCMAimpacts (some 900 km Northeast of the city) are shown for specific outflow conditions in which enhanced ozone, NOy, and MTBE mixing ratios over the Gulf of Mexico are linked to MCMA by source tagged tracers and sensitivity runs. This study shows that the "footprint" of MCMA on average is fairly local, with exception to reactive nitrogen, which can be transported long range in the form of PAN, acting as a reservoir and source of NOx with important regional ozone formation implications. The simulated effect of MCMA emissions of anthropogenic aerosol on photochemistry showed a maximum regional decrease of 40% in J[NO2→NO+O], and resulting in the reduction of ozone production by 5-10%. Observed ozone production efficiencies are evaluated as a function of distance from MCMA, and by modeled influence from MCMA. These tend to be much lower closer to MCMA, or in those points where modeled contribution from MCMA is large. This research shows that MCMA emissions do effect on regional air quality and photochemistry, both contributing large amounts of ozone and its precursors, but with caveat that aerosol concentrations hinder formation of ozone to its potential due to its reduction in photolysis rates.

Idioma originalEnglish
Páginas (desde-hasta)3731-3743
Número de páginas13
PublicaciónAtmospheric Chemistry and Physics
Volumen9
N.º11
EstadoPublished - 2009

Huella dactilar

air quality
ozone
photochemistry
aerosol
MTBE
photolysis
city
footprint
mixing ratio
aircraft
outflow
tracer
nitrogen
effect
experiment

ASJC Scopus subject areas

  • Atmospheric Science

Citar esto

Mena-Carrasco, M., Carmichael, G. R., Campbell, J. E., Zimmerman, D., Tang, Y., Adhikary, B., ... Zheng, W. (2009). Assessing the regional impacts of Mexico City emissions on air quality and chemistry. Atmospheric Chemistry and Physics, 9(11), 3731-3743.
Mena-Carrasco, M. ; Carmichael, G. R. ; Campbell, J. E. ; Zimmerman, D. ; Tang, Y. ; Adhikary, B. ; D'Allura, A. ; Molina, L. T. ; Zavala, M. ; García, A. ; Flocke, F. ; Campos, T. ; Weinheimer, A. J. ; Shetter, R. ; Apel, E. ; Montzka, D. D. ; Knapp, D. J. ; Zheng, W. / Assessing the regional impacts of Mexico City emissions on air quality and chemistry. En: Atmospheric Chemistry and Physics. 2009 ; Vol. 9, N.º 11. pp. 3731-3743.
@article{9af82fbb10ba415e824f5e575b53fe06,
title = "Assessing the regional impacts of Mexico City emissions on air quality and chemistry",
abstract = "The impact of Mexico City (MCMA) emissions is examined by studying its effects on air quality, photochemistry, and on ozone production regimes by combining model products and aircraft observations from the MILAGRO experiment during March 2006. The modeled influence of MCMA emissions to enhancements in surface level NOx, CO, and O3 concentrations (10-30{\%} increase) are con-fined to distances <200 km, near surface. However, the extent of the influence is significantly larger at higher altitudes. BroaderMCMAimpacts (some 900 km Northeast of the city) are shown for specific outflow conditions in which enhanced ozone, NOy, and MTBE mixing ratios over the Gulf of Mexico are linked to MCMA by source tagged tracers and sensitivity runs. This study shows that the {"}footprint{"} of MCMA on average is fairly local, with exception to reactive nitrogen, which can be transported long range in the form of PAN, acting as a reservoir and source of NOx with important regional ozone formation implications. The simulated effect of MCMA emissions of anthropogenic aerosol on photochemistry showed a maximum regional decrease of 40{\%} in J[NO2→NO+O], and resulting in the reduction of ozone production by 5-10{\%}. Observed ozone production efficiencies are evaluated as a function of distance from MCMA, and by modeled influence from MCMA. These tend to be much lower closer to MCMA, or in those points where modeled contribution from MCMA is large. This research shows that MCMA emissions do effect on regional air quality and photochemistry, both contributing large amounts of ozone and its precursors, but with caveat that aerosol concentrations hinder formation of ozone to its potential due to its reduction in photolysis rates.",
author = "M. Mena-Carrasco and Carmichael, {G. R.} and Campbell, {J. E.} and D. Zimmerman and Y. Tang and B. Adhikary and A. D'Allura and Molina, {L. T.} and M. Zavala and A. Garc{\'i}a and F. Flocke and T. Campos and Weinheimer, {A. J.} and R. Shetter and E. Apel and Montzka, {D. D.} and Knapp, {D. J.} and W. Zheng",
year = "2009",
language = "English",
volume = "9",
pages = "3731--3743",
journal = "Atmospheric Chemistry and Physics",
issn = "1680-7316",
publisher = "European Geosciences Union",
number = "11",

}

Mena-Carrasco, M, Carmichael, GR, Campbell, JE, Zimmerman, D, Tang, Y, Adhikary, B, D'Allura, A, Molina, LT, Zavala, M, García, A, Flocke, F, Campos, T, Weinheimer, AJ, Shetter, R, Apel, E, Montzka, DD, Knapp, DJ & Zheng, W 2009, 'Assessing the regional impacts of Mexico City emissions on air quality and chemistry', Atmospheric Chemistry and Physics, vol. 9, n.º 11, pp. 3731-3743.

Assessing the regional impacts of Mexico City emissions on air quality and chemistry. / Mena-Carrasco, M.; Carmichael, G. R.; Campbell, J. E.; Zimmerman, D.; Tang, Y.; Adhikary, B.; D'Allura, A.; Molina, L. T.; Zavala, M.; García, A.; Flocke, F.; Campos, T.; Weinheimer, A. J.; Shetter, R.; Apel, E.; Montzka, D. D.; Knapp, D. J.; Zheng, W.

En: Atmospheric Chemistry and Physics, Vol. 9, N.º 11, 2009, p. 3731-3743.

Resultado de la investigación: Article

TY - JOUR

T1 - Assessing the regional impacts of Mexico City emissions on air quality and chemistry

AU - Mena-Carrasco, M.

AU - Carmichael, G. R.

AU - Campbell, J. E.

AU - Zimmerman, D.

AU - Tang, Y.

AU - Adhikary, B.

AU - D'Allura, A.

AU - Molina, L. T.

AU - Zavala, M.

AU - García, A.

AU - Flocke, F.

AU - Campos, T.

AU - Weinheimer, A. J.

AU - Shetter, R.

AU - Apel, E.

AU - Montzka, D. D.

AU - Knapp, D. J.

AU - Zheng, W.

PY - 2009

Y1 - 2009

N2 - The impact of Mexico City (MCMA) emissions is examined by studying its effects on air quality, photochemistry, and on ozone production regimes by combining model products and aircraft observations from the MILAGRO experiment during March 2006. The modeled influence of MCMA emissions to enhancements in surface level NOx, CO, and O3 concentrations (10-30% increase) are con-fined to distances <200 km, near surface. However, the extent of the influence is significantly larger at higher altitudes. BroaderMCMAimpacts (some 900 km Northeast of the city) are shown for specific outflow conditions in which enhanced ozone, NOy, and MTBE mixing ratios over the Gulf of Mexico are linked to MCMA by source tagged tracers and sensitivity runs. This study shows that the "footprint" of MCMA on average is fairly local, with exception to reactive nitrogen, which can be transported long range in the form of PAN, acting as a reservoir and source of NOx with important regional ozone formation implications. The simulated effect of MCMA emissions of anthropogenic aerosol on photochemistry showed a maximum regional decrease of 40% in J[NO2→NO+O], and resulting in the reduction of ozone production by 5-10%. Observed ozone production efficiencies are evaluated as a function of distance from MCMA, and by modeled influence from MCMA. These tend to be much lower closer to MCMA, or in those points where modeled contribution from MCMA is large. This research shows that MCMA emissions do effect on regional air quality and photochemistry, both contributing large amounts of ozone and its precursors, but with caveat that aerosol concentrations hinder formation of ozone to its potential due to its reduction in photolysis rates.

AB - The impact of Mexico City (MCMA) emissions is examined by studying its effects on air quality, photochemistry, and on ozone production regimes by combining model products and aircraft observations from the MILAGRO experiment during March 2006. The modeled influence of MCMA emissions to enhancements in surface level NOx, CO, and O3 concentrations (10-30% increase) are con-fined to distances <200 km, near surface. However, the extent of the influence is significantly larger at higher altitudes. BroaderMCMAimpacts (some 900 km Northeast of the city) are shown for specific outflow conditions in which enhanced ozone, NOy, and MTBE mixing ratios over the Gulf of Mexico are linked to MCMA by source tagged tracers and sensitivity runs. This study shows that the "footprint" of MCMA on average is fairly local, with exception to reactive nitrogen, which can be transported long range in the form of PAN, acting as a reservoir and source of NOx with important regional ozone formation implications. The simulated effect of MCMA emissions of anthropogenic aerosol on photochemistry showed a maximum regional decrease of 40% in J[NO2→NO+O], and resulting in the reduction of ozone production by 5-10%. Observed ozone production efficiencies are evaluated as a function of distance from MCMA, and by modeled influence from MCMA. These tend to be much lower closer to MCMA, or in those points where modeled contribution from MCMA is large. This research shows that MCMA emissions do effect on regional air quality and photochemistry, both contributing large amounts of ozone and its precursors, but with caveat that aerosol concentrations hinder formation of ozone to its potential due to its reduction in photolysis rates.

UR - http://www.scopus.com/inward/record.url?scp=70849132209&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:70849132209

VL - 9

SP - 3731

EP - 3743

JO - Atmospheric Chemistry and Physics

JF - Atmospheric Chemistry and Physics

SN - 1680-7316

IS - 11

ER -

Mena-Carrasco M, Carmichael GR, Campbell JE, Zimmerman D, Tang Y, Adhikary B y otros. Assessing the regional impacts of Mexico City emissions on air quality and chemistry. Atmospheric Chemistry and Physics. 2009;9(11):3731-3743.