Impact of Mexico City emissions on regional air quality from MOZART-4 simulations

L. K. Emmons, E. C. Apel, J. F. Lamarque, P. G. Hess, M. Avery, D. Blake, W. Brune, T. Campos, J. Crawford, P. F. DeCarlo, S. Hall, B. Heikes, J. Holloway, J. L. Jimenez, D. J. Knapp, G. Kok, M. Mena-Carrasco, J. Olson, D. O'Sullivan, G. SachseJ. Walega, P. Weibring, A. Weinheimer, C. Wiedinmyer

Resultado de la investigación: Article

49 Citas (Scopus)

Resumen

An extensive set of measurements was made in and around Mexico City as part of the MILAGRO (Megacity Initiative: Local and Global Research Observations) experiments in March 2006. Simulations with the Model for Ozone and Related Chemical Tracers, version 4 (MOZART- 4), a global chemical transport model, have been used to provide a regional context for these observations and assist in their interpretation. These MOZART-4 simulations reproduce the aircraft observations generally well, but some differences in the modeled volatile organic compounds (VOCs) from the observations result from incorrect VOC speciation assumed for the emission inventories. The different types of CO sources represented in the model have been "tagged" to quantify the contributions of regions outside Mexico, as well as the various emissions sectors within Mexico, to the regional air quality of Mexico. This analysis indicates open fires have some, but not a dominant, impact on the atmo-spheric composition in the region around Mexico City when averaged over the month. However, considerable variation in the fire contribution (2-15% of total CO) is seen during the month. The transport and photochemical aging of Mexico City emissions were studied using tags of CO emissions for each day, showing that typically the air downwind of Mexico City was a combination of many ages. Ozone production in MOZART-4 is shown to agree well with the net production rates from box model calculations constrained by the MILAGRO aircraft measurements. Ozone production efficiency derived from the ratio of Ox to NOz is higher in MOZART-4 than in the observations for moderately polluted air. OH reactivity determined from the MOZART-4 results shows the same increase in relative importance of oxygenated VOCs downwind of Mexico City as the reactivity inferred from the observations. The amount of ozone produced by emissions from Mexico City and surrounding areas has been quantified in the model by tracking NO emissions, showing little influence beyond Mexico's borders, and also relatively minor influence from fire emissions on the monthly average tropospheric ozone column.

Idioma originalEnglish
Páginas (desde-hasta)6195-6212
Número de páginas18
PublicaciónAtmospheric Chemistry and Physics
Volumen10
N.º13
DOI
EstadoPublished - 2010

Huella dactilar

air quality
ozone
simulation
volatile organic compound
megacity
airborne survey
air
emission inventory
city
aircraft
tracer
experiment
chemical

ASJC Scopus subject areas

  • Atmospheric Science

Citar esto

Emmons, L. K., Apel, E. C., Lamarque, J. F., Hess, P. G., Avery, M., Blake, D., ... Wiedinmyer, C. (2010). Impact of Mexico City emissions on regional air quality from MOZART-4 simulations. Atmospheric Chemistry and Physics, 10(13), 6195-6212. https://doi.org/10.5194/acp-10-6195-2010
Emmons, L. K. ; Apel, E. C. ; Lamarque, J. F. ; Hess, P. G. ; Avery, M. ; Blake, D. ; Brune, W. ; Campos, T. ; Crawford, J. ; DeCarlo, P. F. ; Hall, S. ; Heikes, B. ; Holloway, J. ; Jimenez, J. L. ; Knapp, D. J. ; Kok, G. ; Mena-Carrasco, M. ; Olson, J. ; O'Sullivan, D. ; Sachse, G. ; Walega, J. ; Weibring, P. ; Weinheimer, A. ; Wiedinmyer, C. / Impact of Mexico City emissions on regional air quality from MOZART-4 simulations. En: Atmospheric Chemistry and Physics. 2010 ; Vol. 10, N.º 13. pp. 6195-6212.
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abstract = "An extensive set of measurements was made in and around Mexico City as part of the MILAGRO (Megacity Initiative: Local and Global Research Observations) experiments in March 2006. Simulations with the Model for Ozone and Related Chemical Tracers, version 4 (MOZART- 4), a global chemical transport model, have been used to provide a regional context for these observations and assist in their interpretation. These MOZART-4 simulations reproduce the aircraft observations generally well, but some differences in the modeled volatile organic compounds (VOCs) from the observations result from incorrect VOC speciation assumed for the emission inventories. The different types of CO sources represented in the model have been {"}tagged{"} to quantify the contributions of regions outside Mexico, as well as the various emissions sectors within Mexico, to the regional air quality of Mexico. This analysis indicates open fires have some, but not a dominant, impact on the atmo-spheric composition in the region around Mexico City when averaged over the month. However, considerable variation in the fire contribution (2-15{\%} of total CO) is seen during the month. The transport and photochemical aging of Mexico City emissions were studied using tags of CO emissions for each day, showing that typically the air downwind of Mexico City was a combination of many ages. Ozone production in MOZART-4 is shown to agree well with the net production rates from box model calculations constrained by the MILAGRO aircraft measurements. Ozone production efficiency derived from the ratio of Ox to NOz is higher in MOZART-4 than in the observations for moderately polluted air. OH reactivity determined from the MOZART-4 results shows the same increase in relative importance of oxygenated VOCs downwind of Mexico City as the reactivity inferred from the observations. The amount of ozone produced by emissions from Mexico City and surrounding areas has been quantified in the model by tracking NO emissions, showing little influence beyond Mexico's borders, and also relatively minor influence from fire emissions on the monthly average tropospheric ozone column.",
author = "Emmons, {L. K.} and Apel, {E. C.} and Lamarque, {J. F.} and Hess, {P. G.} and M. Avery and D. Blake and W. Brune and T. Campos and J. Crawford and DeCarlo, {P. F.} and S. Hall and B. Heikes and J. Holloway and Jimenez, {J. L.} and Knapp, {D. J.} and G. Kok and M. Mena-Carrasco and J. Olson and D. O'Sullivan and G. Sachse and J. Walega and P. Weibring and A. Weinheimer and C. Wiedinmyer",
year = "2010",
doi = "10.5194/acp-10-6195-2010",
language = "English",
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pages = "6195--6212",
journal = "Atmospheric Chemistry and Physics",
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Emmons, LK, Apel, EC, Lamarque, JF, Hess, PG, Avery, M, Blake, D, Brune, W, Campos, T, Crawford, J, DeCarlo, PF, Hall, S, Heikes, B, Holloway, J, Jimenez, JL, Knapp, DJ, Kok, G, Mena-Carrasco, M, Olson, J, O'Sullivan, D, Sachse, G, Walega, J, Weibring, P, Weinheimer, A & Wiedinmyer, C 2010, 'Impact of Mexico City emissions on regional air quality from MOZART-4 simulations', Atmospheric Chemistry and Physics, vol. 10, n.º 13, pp. 6195-6212. https://doi.org/10.5194/acp-10-6195-2010

Impact of Mexico City emissions on regional air quality from MOZART-4 simulations. / Emmons, L. K.; Apel, E. C.; Lamarque, J. F.; Hess, P. G.; Avery, M.; Blake, D.; Brune, W.; Campos, T.; Crawford, J.; DeCarlo, P. F.; Hall, S.; Heikes, B.; Holloway, J.; Jimenez, J. L.; Knapp, D. J.; Kok, G.; Mena-Carrasco, M.; Olson, J.; O'Sullivan, D.; Sachse, G.; Walega, J.; Weibring, P.; Weinheimer, A.; Wiedinmyer, C.

En: Atmospheric Chemistry and Physics, Vol. 10, N.º 13, 2010, p. 6195-6212.

Resultado de la investigación: Article

TY - JOUR

T1 - Impact of Mexico City emissions on regional air quality from MOZART-4 simulations

AU - Emmons, L. K.

AU - Apel, E. C.

AU - Lamarque, J. F.

AU - Hess, P. G.

AU - Avery, M.

AU - Blake, D.

AU - Brune, W.

AU - Campos, T.

AU - Crawford, J.

AU - DeCarlo, P. F.

AU - Hall, S.

AU - Heikes, B.

AU - Holloway, J.

AU - Jimenez, J. L.

AU - Knapp, D. J.

AU - Kok, G.

AU - Mena-Carrasco, M.

AU - Olson, J.

AU - O'Sullivan, D.

AU - Sachse, G.

AU - Walega, J.

AU - Weibring, P.

AU - Weinheimer, A.

AU - Wiedinmyer, C.

PY - 2010

Y1 - 2010

N2 - An extensive set of measurements was made in and around Mexico City as part of the MILAGRO (Megacity Initiative: Local and Global Research Observations) experiments in March 2006. Simulations with the Model for Ozone and Related Chemical Tracers, version 4 (MOZART- 4), a global chemical transport model, have been used to provide a regional context for these observations and assist in their interpretation. These MOZART-4 simulations reproduce the aircraft observations generally well, but some differences in the modeled volatile organic compounds (VOCs) from the observations result from incorrect VOC speciation assumed for the emission inventories. The different types of CO sources represented in the model have been "tagged" to quantify the contributions of regions outside Mexico, as well as the various emissions sectors within Mexico, to the regional air quality of Mexico. This analysis indicates open fires have some, but not a dominant, impact on the atmo-spheric composition in the region around Mexico City when averaged over the month. However, considerable variation in the fire contribution (2-15% of total CO) is seen during the month. The transport and photochemical aging of Mexico City emissions were studied using tags of CO emissions for each day, showing that typically the air downwind of Mexico City was a combination of many ages. Ozone production in MOZART-4 is shown to agree well with the net production rates from box model calculations constrained by the MILAGRO aircraft measurements. Ozone production efficiency derived from the ratio of Ox to NOz is higher in MOZART-4 than in the observations for moderately polluted air. OH reactivity determined from the MOZART-4 results shows the same increase in relative importance of oxygenated VOCs downwind of Mexico City as the reactivity inferred from the observations. The amount of ozone produced by emissions from Mexico City and surrounding areas has been quantified in the model by tracking NO emissions, showing little influence beyond Mexico's borders, and also relatively minor influence from fire emissions on the monthly average tropospheric ozone column.

AB - An extensive set of measurements was made in and around Mexico City as part of the MILAGRO (Megacity Initiative: Local and Global Research Observations) experiments in March 2006. Simulations with the Model for Ozone and Related Chemical Tracers, version 4 (MOZART- 4), a global chemical transport model, have been used to provide a regional context for these observations and assist in their interpretation. These MOZART-4 simulations reproduce the aircraft observations generally well, but some differences in the modeled volatile organic compounds (VOCs) from the observations result from incorrect VOC speciation assumed for the emission inventories. The different types of CO sources represented in the model have been "tagged" to quantify the contributions of regions outside Mexico, as well as the various emissions sectors within Mexico, to the regional air quality of Mexico. This analysis indicates open fires have some, but not a dominant, impact on the atmo-spheric composition in the region around Mexico City when averaged over the month. However, considerable variation in the fire contribution (2-15% of total CO) is seen during the month. The transport and photochemical aging of Mexico City emissions were studied using tags of CO emissions for each day, showing that typically the air downwind of Mexico City was a combination of many ages. Ozone production in MOZART-4 is shown to agree well with the net production rates from box model calculations constrained by the MILAGRO aircraft measurements. Ozone production efficiency derived from the ratio of Ox to NOz is higher in MOZART-4 than in the observations for moderately polluted air. OH reactivity determined from the MOZART-4 results shows the same increase in relative importance of oxygenated VOCs downwind of Mexico City as the reactivity inferred from the observations. The amount of ozone produced by emissions from Mexico City and surrounding areas has been quantified in the model by tracking NO emissions, showing little influence beyond Mexico's borders, and also relatively minor influence from fire emissions on the monthly average tropospheric ozone column.

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U2 - 10.5194/acp-10-6195-2010

DO - 10.5194/acp-10-6195-2010

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JO - Atmospheric Chemistry and Physics

JF - Atmospheric Chemistry and Physics

SN - 1680-7316

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