Evaluating regional emission estimates using the TRACE-P observations

G. R. Carmichael, Y. Tang, G. Kurata, Itsushi Uno, D. G. Streets, N. Thongboonchoo, J. H. Woo, S. Guttikunda, A. White, T. Wang, D. R. Blake, E. Atlas, A. Fried, B. Potter, M. A. Avery, G. W. Sachse, S. T. Sandholm, Y. Kondo, R. W. Talbot, A. BandyD. Thorton, A. D. Clarke

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Abstract

Measurements obtained during the NASA Transport and Chemical Evolution over the Pacific (TRACE-P) experiment are used in conjunction with regional modeling analysis to evaluate emission estimates for Asia. A comparison between the modeled values and the observations is one method to evaluate emissions. Based on such analysis it is concluded that the inventory performs well for the light alkanes, CO, ethyne, SO2, and NOx. Furthermore, based on model skill in predicting important photochemical species such as O3, HCHO, OH, HO2, and HNO3, it is found that the emissions inventories are of sufficient quality to support preliminary studies of ozone production. These are important finding in light of the fact that emission estimates for many species (such as speciated NMHCs and BC) for this region have only recently been estimated and are highly uncertain. Using a classification of the measurements built upon trajectory analysis, we compare observed species distributions and ratios of species to those modeled and to ratios estimated from the emissions inventory. It is shown that this technique can reconstruct a spatial distribution of propane/benzene that looks remarkably similar to that calculated from the emissions inventory. A major discrepancy between modeled and observed behavior is found in the Yellow Sea, where modeled values are systematically underpredicted. The integrated analysis suggests that this may be related to an underestimation of emissions from the domestic sector. The emission is further tested by comparing observed and measured species ratios in identified megacity plumes. Many of the model derived ratios (e.g., BC/CO, SOx/C2H2) fall within ∼25% of those observed and all fall outside of a factor of 2.5.

Original languageEnglish
JournalJournal of Geophysical Research D: Atmospheres
Volume108
Issue number21
Publication statusPublished - Nov 16 2003

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chemical evolution
Carbon Monoxide
emission inventory
Acetylene
Propane
Alkanes
Ozone
estimates
Benzene
Spatial distribution
NASA
Trajectories
megacity
propane
alkane
Experiments
benzene
trajectory analysis
plume
Yellow Sea

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
  • Space and Planetary Science
  • Earth and Planetary Sciences (miscellaneous)
  • Palaeontology

Cite this

Carmichael, G. R., Tang, Y., Kurata, G., Uno, I., Streets, D. G., Thongboonchoo, N., ... Clarke, A. D. (2003). Evaluating regional emission estimates using the TRACE-P observations. Journal of Geophysical Research D: Atmospheres, 108(21).

Evaluating regional emission estimates using the TRACE-P observations. / Carmichael, G. R.; Tang, Y.; Kurata, G.; Uno, Itsushi; Streets, D. G.; Thongboonchoo, N.; Woo, J. H.; Guttikunda, S.; White, A.; Wang, T.; Blake, D. R.; Atlas, E.; Fried, A.; Potter, B.; Avery, M. A.; Sachse, G. W.; Sandholm, S. T.; Kondo, Y.; Talbot, R. W.; Bandy, A.; Thorton, D.; Clarke, A. D.

In: Journal of Geophysical Research D: Atmospheres, Vol. 108, No. 21, 16.11.2003.

Research output: Contribution to journalArticle

Carmichael, GR, Tang, Y, Kurata, G, Uno, I, Streets, DG, Thongboonchoo, N, Woo, JH, Guttikunda, S, White, A, Wang, T, Blake, DR, Atlas, E, Fried, A, Potter, B, Avery, MA, Sachse, GW, Sandholm, ST, Kondo, Y, Talbot, RW, Bandy, A, Thorton, D & Clarke, AD 2003, 'Evaluating regional emission estimates using the TRACE-P observations', Journal of Geophysical Research D: Atmospheres, vol. 108, no. 21.
Carmichael GR, Tang Y, Kurata G, Uno I, Streets DG, Thongboonchoo N et al. Evaluating regional emission estimates using the TRACE-P observations. Journal of Geophysical Research D: Atmospheres. 2003 Nov 16;108(21).
Carmichael, G. R. ; Tang, Y. ; Kurata, G. ; Uno, Itsushi ; Streets, D. G. ; Thongboonchoo, N. ; Woo, J. H. ; Guttikunda, S. ; White, A. ; Wang, T. ; Blake, D. R. ; Atlas, E. ; Fried, A. ; Potter, B. ; Avery, M. A. ; Sachse, G. W. ; Sandholm, S. T. ; Kondo, Y. ; Talbot, R. W. ; Bandy, A. ; Thorton, D. ; Clarke, A. D. / Evaluating regional emission estimates using the TRACE-P observations. In: Journal of Geophysical Research D: Atmospheres. 2003 ; Vol. 108, No. 21.
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abstract = "Measurements obtained during the NASA Transport and Chemical Evolution over the Pacific (TRACE-P) experiment are used in conjunction with regional modeling analysis to evaluate emission estimates for Asia. A comparison between the modeled values and the observations is one method to evaluate emissions. Based on such analysis it is concluded that the inventory performs well for the light alkanes, CO, ethyne, SO2, and NOx. Furthermore, based on model skill in predicting important photochemical species such as O3, HCHO, OH, HO2, and HNO3, it is found that the emissions inventories are of sufficient quality to support preliminary studies of ozone production. These are important finding in light of the fact that emission estimates for many species (such as speciated NMHCs and BC) for this region have only recently been estimated and are highly uncertain. Using a classification of the measurements built upon trajectory analysis, we compare observed species distributions and ratios of species to those modeled and to ratios estimated from the emissions inventory. It is shown that this technique can reconstruct a spatial distribution of propane/benzene that looks remarkably similar to that calculated from the emissions inventory. A major discrepancy between modeled and observed behavior is found in the Yellow Sea, where modeled values are systematically underpredicted. The integrated analysis suggests that this may be related to an underestimation of emissions from the domestic sector. The emission is further tested by comparing observed and measured species ratios in identified megacity plumes. Many of the model derived ratios (e.g., BC/CO, SOx/C2H2) fall within ∼25{\%} of those observed and all fall outside of a factor of 2.5.",
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AU - Carmichael, G. R.

AU - Tang, Y.

AU - Kurata, G.

AU - Uno, Itsushi

AU - Streets, D. G.

AU - Thongboonchoo, N.

AU - Woo, J. H.

AU - Guttikunda, S.

AU - White, A.

AU - Wang, T.

AU - Blake, D. R.

AU - Atlas, E.

AU - Fried, A.

AU - Potter, B.

AU - Avery, M. A.

AU - Sachse, G. W.

AU - Sandholm, S. T.

AU - Kondo, Y.

AU - Talbot, R. W.

AU - Bandy, A.

AU - Thorton, D.

AU - Clarke, A. D.

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N2 - Measurements obtained during the NASA Transport and Chemical Evolution over the Pacific (TRACE-P) experiment are used in conjunction with regional modeling analysis to evaluate emission estimates for Asia. A comparison between the modeled values and the observations is one method to evaluate emissions. Based on such analysis it is concluded that the inventory performs well for the light alkanes, CO, ethyne, SO2, and NOx. Furthermore, based on model skill in predicting important photochemical species such as O3, HCHO, OH, HO2, and HNO3, it is found that the emissions inventories are of sufficient quality to support preliminary studies of ozone production. These are important finding in light of the fact that emission estimates for many species (such as speciated NMHCs and BC) for this region have only recently been estimated and are highly uncertain. Using a classification of the measurements built upon trajectory analysis, we compare observed species distributions and ratios of species to those modeled and to ratios estimated from the emissions inventory. It is shown that this technique can reconstruct a spatial distribution of propane/benzene that looks remarkably similar to that calculated from the emissions inventory. A major discrepancy between modeled and observed behavior is found in the Yellow Sea, where modeled values are systematically underpredicted. The integrated analysis suggests that this may be related to an underestimation of emissions from the domestic sector. The emission is further tested by comparing observed and measured species ratios in identified megacity plumes. Many of the model derived ratios (e.g., BC/CO, SOx/C2H2) fall within ∼25% of those observed and all fall outside of a factor of 2.5.

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