Large-scale ozone and aerosol distributions, air mass characteristics, and ozone fluxes over the western Pacific Ocean in late winter/early spring

Edward V. Browell, Marta A. Fenn, Carolyn F. Butler, William B. Grant, Vincent G. Brackett, Johnathan W. Hair, Melody A. Avery, Reginald E. Newell, Yuanlong Hu, Henry E. Fuelberg, Daniel J. Jacob, Bruce E. Anderson, Elliot L Atlas, Donald R. Blake, William H. Brune, Jack E. Dibb, Alan Fried, Brian G. Heikes, Glen W. Sachse, Scott T. Sandholm & 5 others Hanwant B. Singh, Robert W. Talbot, Stephanie A. Vay, Rodney J. Weber, Karen B. Bartlett

Research output: Contribution to journalArticle

37 Citations (Scopus)

Abstract

Large-scale measurements of ozone (O3) and aerosol distributions were made from the NASA DC-8 aircraft during the Transport and Chemical Evolution over the Pacific (TRACE-P) field experiment conducted in February-April 2001. Remote measurements were made with an airborne lidar to provide O3 and multiple-wavelength aerosol backscatter profiles from near the surface to above the tropopause along the flight track. In situ measurements Of O3, aerosols, and a wide range of trace gases were made onboard the DC-8. Five-day backward trajectories were used in conjunction with the O3 and aerosol distributions on each flight to indicate the possible origin of observed air masses, such as from biomass burning regions, continental pollution, desert regions, and oceanic regions. Average latitudinal O3 and aerosol scattering ratio distributions were derived from all flights west of 150°E, and these distributions showed the average latitude and altitude dependence of different dynamical and chemical processes in determining the atmospheric composition over the western Pacific. TRACE-P (TP) showed an increase in the average latitudinal distributions of both O3 and aerosols compared to PEM-West B (PWB), which was conducted in February-March 1994. O3, aerosol, and potential vorticity levels were used to identify nine air mass types and quantify their frequency of occurrence as a function of altitude. This paper discusses the characteristics of the different air mass types encountered during TP and compares them to PWB. These results confirmed that most of the O3 increase in TP was due to photochemistry. The average latitudinal eastward O3 flux in the western Pacific during TP was found to peak near 32°N with a total average O3 flux between 14 and 46°N of 5.2 Tg/day. The eastward total CO flux was calculated to be 2.2 Tg-C/day with ∼6% estimated from Asia. The Asian flux of CO2 and CH4 was estimated at 4.9 and 0.06 Tg-C/day.

Original languageEnglish (US)
JournalJournal of Geophysical Research C: Oceans
Volume108
Issue number20
StatePublished - Oct 27 2003
Externally publishedYes

Fingerprint

Pacific Ocean
Ozone
air masses
Aerosols
air mass
winter
ozone
aerosols
Fluxes
aerosol
ocean
Air
chemical evolution
flight
DC 8 aircraft
Atmospheric composition
atmospheric composition
biomass burning
tropopause
Photochemical reactions

Keywords

  • Aerosols
  • Air mass characteristics
  • Fluxes
  • Ozone
  • TRACE-P
  • Western Pacific

ASJC Scopus subject areas

  • Earth and Planetary Sciences (miscellaneous)
  • Atmospheric Science
  • Geochemistry and Petrology
  • Geophysics
  • Oceanography
  • Space and Planetary Science
  • Astronomy and Astrophysics

Cite this

Browell, E. V., Fenn, M. A., Butler, C. F., Grant, W. B., Brackett, V. G., Hair, J. W., ... Bartlett, K. B. (2003). Large-scale ozone and aerosol distributions, air mass characteristics, and ozone fluxes over the western Pacific Ocean in late winter/early spring. Journal of Geophysical Research C: Oceans, 108(20).

Large-scale ozone and aerosol distributions, air mass characteristics, and ozone fluxes over the western Pacific Ocean in late winter/early spring. / Browell, Edward V.; Fenn, Marta A.; Butler, Carolyn F.; Grant, William B.; Brackett, Vincent G.; Hair, Johnathan W.; Avery, Melody A.; Newell, Reginald E.; Hu, Yuanlong; Fuelberg, Henry E.; Jacob, Daniel J.; Anderson, Bruce E.; Atlas, Elliot L; Blake, Donald R.; Brune, William H.; Dibb, Jack E.; Fried, Alan; Heikes, Brian G.; Sachse, Glen W.; Sandholm, Scott T.; Singh, Hanwant B.; Talbot, Robert W.; Vay, Stephanie A.; Weber, Rodney J.; Bartlett, Karen B.

In: Journal of Geophysical Research C: Oceans, Vol. 108, No. 20, 27.10.2003.

Research output: Contribution to journalArticle

Browell, EV, Fenn, MA, Butler, CF, Grant, WB, Brackett, VG, Hair, JW, Avery, MA, Newell, RE, Hu, Y, Fuelberg, HE, Jacob, DJ, Anderson, BE, Atlas, EL, Blake, DR, Brune, WH, Dibb, JE, Fried, A, Heikes, BG, Sachse, GW, Sandholm, ST, Singh, HB, Talbot, RW, Vay, SA, Weber, RJ & Bartlett, KB 2003, 'Large-scale ozone and aerosol distributions, air mass characteristics, and ozone fluxes over the western Pacific Ocean in late winter/early spring', Journal of Geophysical Research C: Oceans, vol. 108, no. 20.
Browell, Edward V. ; Fenn, Marta A. ; Butler, Carolyn F. ; Grant, William B. ; Brackett, Vincent G. ; Hair, Johnathan W. ; Avery, Melody A. ; Newell, Reginald E. ; Hu, Yuanlong ; Fuelberg, Henry E. ; Jacob, Daniel J. ; Anderson, Bruce E. ; Atlas, Elliot L ; Blake, Donald R. ; Brune, William H. ; Dibb, Jack E. ; Fried, Alan ; Heikes, Brian G. ; Sachse, Glen W. ; Sandholm, Scott T. ; Singh, Hanwant B. ; Talbot, Robert W. ; Vay, Stephanie A. ; Weber, Rodney J. ; Bartlett, Karen B. / Large-scale ozone and aerosol distributions, air mass characteristics, and ozone fluxes over the western Pacific Ocean in late winter/early spring. In: Journal of Geophysical Research C: Oceans. 2003 ; Vol. 108, No. 20.
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AU - Browell, Edward V.

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AU - Grant, William B.

AU - Brackett, Vincent G.

AU - Hair, Johnathan W.

AU - Avery, Melody A.

AU - Newell, Reginald E.

AU - Hu, Yuanlong

AU - Fuelberg, Henry E.

AU - Jacob, Daniel J.

AU - Anderson, Bruce E.

AU - Atlas, Elliot L

AU - Blake, Donald R.

AU - Brune, William H.

AU - Dibb, Jack E.

AU - Fried, Alan

AU - Heikes, Brian G.

AU - Sachse, Glen W.

AU - Sandholm, Scott T.

AU - Singh, Hanwant B.

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