HR: 11:20h
AN: A42A-05    [Abstracts]
TI: Photochemistry Within Plumes of Various Origin During INTEX-B: A Case Study From May 5
AU: * Olson, J
EM: Jennifer.R.Olson@nasa.gov
AF: NASA Langley Research Center, Science Directorate, 21 Langley Blvd., Hampton, VA 23681, United States
AU: Chen, G
EM: Gao.Chen@nasa.gov
AF: NASA Langley Research Center, Science Directorate, 21 Langley Blvd., Hampton, VA 23681, United States
AU: Crawford, J
EM: James.H.Crawford@nasa.gov
AF: NASA Langley Research Center, Science Directorate, 21 Langley Blvd., Hampton, VA 23681, United States
AU: Fuelberg, H
EM: fuelberg@met.fsu.edu
AF: Florida State University, Department of Meteorology, 362 Love Building, Tallahassee, FL 32306, United States
AU: Weinheimer, A
EM: wein@acd.ucar.edu
AF: NCAR/ACD, 3450 Mitchell Lane, Boulder, CO 80301, United States
AU: Campos, T
EM: campos@ucar.edu
AF: NCAR/ACD, 3450 Mitchell Lane, Boulder, CO 80301, United States
AU: Flocke, F
EM: ffl@ucar.edu
AF: NCAR/ACD, 3450 Mitchell Lane, Boulder, CO 80301, United States
AU: Karl, T
EM: tomkarl@ucar.edu
AF: NCAR/ACD, 3450 Mitchell Lane, Boulder, CO 80301, United States
AU: Blake, D
EM: drblake@uci.edu
AF: University of California, Irvine, School of Physical Sciences, 507 Rowland Hall, Irvine, CA 92697, United States
AU: Apel, E
EM: apel@acd.ucar.edu
AF: NCAR/ACD, 3450 Mitchell Lane, Boulder, CO 80301, United States
AU: Clarke, A
EM: tclarke@soest.hawaii.edu
AF: University of Hawaii, Department of Oceanography, 1000 Pope Road, Honolulu, HI 96922, United States
AU: Avery, M
EM: Melody.A.Avery@nasa.gov
AF: NASA Langley Research Center, Science Directorate, 21 Langley Blvd., Hampton, VA 23681, United States
AU: Sachse, G
EM: Glen.W.Sachse@nasa.gov
AF: National Institute of Aerospace, 100 Exploration Way, Hampton, VA 23666,
AU: Cohen, R
EM: cohen@cchem.berkeley.edu
AF: University of California, Berkeley, Department of Chemistry, 419 Latimer Hall, Berkeley, CA 94720,
AU: Singh, H
EM: Hanwant.B.Singh@nasa.gov
AF: NASA Ames Research Center, MS 245-5, Moffett Field, CA 94035,
AU: Barrick, J
EM: John.D.Barrick@nasa.gov
AF: NASA Langley Research Center, Science Directorate, 21 Langley Blvd., Hampton, VA 23681, United States
AU: Diskin, G
EM: Glenn.S.Diskin@nasa.gov
AF: NASA Langley Research Center, Science Directorate, 21 Langley Blvd., Hampton, VA 23681, United States
AU: Anderson, B
EM: Bruce.E.Anderson@nasa.gov
AF: NASA Langley Research Center, Science Directorate, 21 Langley Blvd., Hampton, VA 23681, United States
AB: INTEX-B provided the opportunity to directly sample pollution plumes of Asian origin during their transport across the northern Pacific Ocean in the spring of 2006. On May 5, the C130 aircraft flew several vertical profiles during a transect off the western North American coast through a series of distinct plumes. These plumes are analyzed using high resolution data and trajectory information with a focus on enhancement correlations between various species and transport history. We find that elevated O3 in these plumes is the result of transport from a combination several distinct source regions, including highly polluted air off the Asian coast and background middle to high tropospheric air originating over the northern Pacific. A photochemical box model is used to examine photochemical signatures such as O3 production tendencies and NOy partitioning within these mixed plumes. The results are presented relative to the overall predictions of the O3 budget over the northern Pacific using data obtained from both the DC8 and the C130 aircraft through the duration of the mission.
DE: 0300 ATMOSPHERIC COMPOSITION AND STRUCTURE
DE: 0325 Evolution of the atmosphere (1610, 8125)
DE: 0365 Troposphere: composition and chemistry
DE: 0368 Troposphere: constituent transport and chemistry
SC: Atmospheric Sciences [A]
MN: 2007 Fall Meeting