Summary of measurement intercomparisons during TRACE-P

F. L. Eisele, L. Mauldin, C. Cantrell, M. Zondlo, E. Apel, A. Fried, J. Walega, R. Shetter, B. Lefer, F. Floke, A. Weinheimer, M. Avery, S. Vay, G. Sachse, J. Podolske, G. Diskin, J. D. Barrick, H. B. Singh, William Henry Brune, H. Harder & 10 others M. Martinez, A. Bandy, D. Thornton, B. Heikes, Y. Kondo, D. Riemer, S. Sandholm, D. Tan, R. Talbot, Jack Dibb

Research output: Contribution to journalArticle

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Abstract

The NASA DC-8 and P-3B aircraft flew within about a kilometer or less of each other on three occasions during the Transport and Chemical Evolution Over the Pacific (TRACE-P) campaign in order to intercompare similar measurements on the two aircraft. The first and last intercomparisons were in relatively remote marine environments during transits to and from Asia. The first began with a boundary layer measurement followed by an ascent to 3 km. The second set of intercomparisons was at a fixed altitude of about 5.2 km off the coast of Japan, also in relatively clean air. Finally, the third measurement began at 5.3 km and then descended into the boundary layer. A number of measurements were compared with the best agreement observed for the most abundant compounds such as CO2 and CH4 and with very good agreement for CO, O3, and j values. Other comparisons, including measurements of the same compounds on both aircraft and measurements of the same compound by two different instruments on the DC-8, varied over a wide range from quite good for PAN, NO, HNO3, H2O; to reasonable agreement for OH, HO2 CH2O, acetone, and methylethylketone; and to generally poor for NO2,SO2, PPN, acetaldehyde, and methanol. The comparison results, particularly those for the fast l-s CO and O3 measurements, suggest that credible intercomparisons can be made using two aircraft in close proximity for relatively long lifetime and stable compounds. Much new understanding can also be gained from measurements of more reactive and generally shorter lifetime compounds, but additional improvements are needed to make such studies as meaningful as those of longer lifetime compounds. Comparisons such as these, made as a component of a larger field campaign, have the advantage that they test the actual instrument configuration used during the field study and they require no additional instrument installation and testing.

Original languageEnglish (US)
JournalJournal of Geophysical Research D: Atmospheres
Volume108
Issue number20
StatePublished - Oct 27 2003

Fingerprint

chemical evolution
aircraft
boundary layer
Aircraft
acetaldehyde
Carbon Monoxide
acetone
life (durability)
methanol
marine environment
boundary layers
Boundary layers
direct current
marine environments
polyacrylonitrile
Acetaldehyde
chemical
ascent
coast
air

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

Cite this

Eisele, F. L., Mauldin, L., Cantrell, C., Zondlo, M., Apel, E., Fried, A., ... Dibb, J. (2003). Summary of measurement intercomparisons during TRACE-P. Journal of Geophysical Research D: Atmospheres, 108(20).
Eisele, F. L. ; Mauldin, L. ; Cantrell, C. ; Zondlo, M. ; Apel, E. ; Fried, A. ; Walega, J. ; Shetter, R. ; Lefer, B. ; Floke, F. ; Weinheimer, A. ; Avery, M. ; Vay, S. ; Sachse, G. ; Podolske, J. ; Diskin, G. ; Barrick, J. D. ; Singh, H. B. ; Brune, William Henry ; Harder, H. ; Martinez, M. ; Bandy, A. ; Thornton, D. ; Heikes, B. ; Kondo, Y. ; Riemer, D. ; Sandholm, S. ; Tan, D. ; Talbot, R. ; Dibb, Jack. / Summary of measurement intercomparisons during TRACE-P. In: Journal of Geophysical Research D: Atmospheres. 2003 ; Vol. 108, No. 20.
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abstract = "The NASA DC-8 and P-3B aircraft flew within about a kilometer or less of each other on three occasions during the Transport and Chemical Evolution Over the Pacific (TRACE-P) campaign in order to intercompare similar measurements on the two aircraft. The first and last intercomparisons were in relatively remote marine environments during transits to and from Asia. The first began with a boundary layer measurement followed by an ascent to 3 km. The second set of intercomparisons was at a fixed altitude of about 5.2 km off the coast of Japan, also in relatively clean air. Finally, the third measurement began at 5.3 km and then descended into the boundary layer. A number of measurements were compared with the best agreement observed for the most abundant compounds such as CO2 and CH4 and with very good agreement for CO, O3, and j values. Other comparisons, including measurements of the same compounds on both aircraft and measurements of the same compound by two different instruments on the DC-8, varied over a wide range from quite good for PAN, NO, HNO3, H2O; to reasonable agreement for OH, HO2 CH2O, acetone, and methylethylketone; and to generally poor for NO2,SO2, PPN, acetaldehyde, and methanol. The comparison results, particularly those for the fast l-s CO and O3 measurements, suggest that credible intercomparisons can be made using two aircraft in close proximity for relatively long lifetime and stable compounds. Much new understanding can also be gained from measurements of more reactive and generally shorter lifetime compounds, but additional improvements are needed to make such studies as meaningful as those of longer lifetime compounds. Comparisons such as these, made as a component of a larger field campaign, have the advantage that they test the actual instrument configuration used during the field study and they require no additional instrument installation and testing.",
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Eisele, FL, Mauldin, L, Cantrell, C, Zondlo, M, Apel, E, Fried, A, Walega, J, Shetter, R, Lefer, B, Floke, F, Weinheimer, A, Avery, M, Vay, S, Sachse, G, Podolske, J, Diskin, G, Barrick, JD, Singh, HB, Brune, WH, Harder, H, Martinez, M, Bandy, A, Thornton, D, Heikes, B, Kondo, Y, Riemer, D, Sandholm, S, Tan, D, Talbot, R & Dibb, J 2003, 'Summary of measurement intercomparisons during TRACE-P', Journal of Geophysical Research D: Atmospheres, vol. 108, no. 20.

Summary of measurement intercomparisons during TRACE-P. / Eisele, F. L.; Mauldin, L.; Cantrell, C.; Zondlo, M.; Apel, E.; Fried, A.; Walega, J.; Shetter, R.; Lefer, B.; Floke, F.; Weinheimer, A.; Avery, M.; Vay, S.; Sachse, G.; Podolske, J.; Diskin, G.; Barrick, J. D.; Singh, H. B.; Brune, William Henry; Harder, H.; Martinez, M.; Bandy, A.; Thornton, D.; Heikes, B.; Kondo, Y.; Riemer, D.; Sandholm, S.; Tan, D.; Talbot, R.; Dibb, Jack.

In: Journal of Geophysical Research D: Atmospheres, Vol. 108, No. 20, 27.10.2003.

Research output: Contribution to journalArticle

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T1 - Summary of measurement intercomparisons during TRACE-P

AU - Eisele, F. L.

AU - Mauldin, L.

AU - Cantrell, C.

AU - Zondlo, M.

AU - Apel, E.

AU - Fried, A.

AU - Walega, J.

AU - Shetter, R.

AU - Lefer, B.

AU - Floke, F.

AU - Weinheimer, A.

AU - Avery, M.

AU - Vay, S.

AU - Sachse, G.

AU - Podolske, J.

AU - Diskin, G.

AU - Barrick, J. D.

AU - Singh, H. B.

AU - Brune, William Henry

AU - Harder, H.

AU - Martinez, M.

AU - Bandy, A.

AU - Thornton, D.

AU - Heikes, B.

AU - Kondo, Y.

AU - Riemer, D.

AU - Sandholm, S.

AU - Tan, D.

AU - Talbot, R.

AU - Dibb, Jack

PY - 2003/10/27

Y1 - 2003/10/27

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AB - The NASA DC-8 and P-3B aircraft flew within about a kilometer or less of each other on three occasions during the Transport and Chemical Evolution Over the Pacific (TRACE-P) campaign in order to intercompare similar measurements on the two aircraft. The first and last intercomparisons were in relatively remote marine environments during transits to and from Asia. The first began with a boundary layer measurement followed by an ascent to 3 km. The second set of intercomparisons was at a fixed altitude of about 5.2 km off the coast of Japan, also in relatively clean air. Finally, the third measurement began at 5.3 km and then descended into the boundary layer. A number of measurements were compared with the best agreement observed for the most abundant compounds such as CO2 and CH4 and with very good agreement for CO, O3, and j values. Other comparisons, including measurements of the same compounds on both aircraft and measurements of the same compound by two different instruments on the DC-8, varied over a wide range from quite good for PAN, NO, HNO3, H2O; to reasonable agreement for OH, HO2 CH2O, acetone, and methylethylketone; and to generally poor for NO2,SO2, PPN, acetaldehyde, and methanol. The comparison results, particularly those for the fast l-s CO and O3 measurements, suggest that credible intercomparisons can be made using two aircraft in close proximity for relatively long lifetime and stable compounds. Much new understanding can also be gained from measurements of more reactive and generally shorter lifetime compounds, but additional improvements are needed to make such studies as meaningful as those of longer lifetime compounds. Comparisons such as these, made as a component of a larger field campaign, have the advantage that they test the actual instrument configuration used during the field study and they require no additional instrument installation and testing.

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Eisele FL, Mauldin L, Cantrell C, Zondlo M, Apel E, Fried A et al. Summary of measurement intercomparisons during TRACE-P. Journal of Geophysical Research D: Atmospheres. 2003 Oct 27;108(20).