HR: 09:45h
AN: A11A-07    [PDF]
TI: Signatures of stratospheric intrusions in TOMS swath data
AU: * Hsu, J
EM: juno@halo.ps.uci.edu
AF: Department of Earth System Science, University of California, Irvine, Irvine, CA 92697 United States
AU: Prather, M J
EM: mprather@uci.edu
AF: Department of Earth System Science, University of California, Irvine, Irvine, CA 92697 United States
AU: Wild, O
EM: oliver@jamstec.go.jp
AF: Atmospheric Composition Program Frontier Research System for Global Change, 3173-25 Showa-machi, Kanazawa-ku, Yokohama, Kanagawa, 236-0001 Japan
AB: TOMS swath data of total column ozone, TRACE-P observations, and high resolution CTM 4-D data are used to identify signatures of stratospheric intrusions into the troposphere over Pacific areas during March 2001. The events with significant total ozone anomalies are singled out for detailed analysis and compared with chemical transport simulations. FRSGC/UCI CTM driven by the T63L40 ECMWF forecast meteorology (190 km horizontal, 600 m vertical) developed at U. Oslo is used to further reconstruct the 3-D intrusions in terms of isentropic potential vorticity and ozone distributions. In addition to intrusion events due to mid-latitude cyclogenesis, intrusion events due to stationary Rossby waves propagating into westerly ducts in the tropics are also investigated. A quantitative relationship between TOMS column filaments and the stratospheric influx of ozone is sought.
DE: 0368 Troposphere--constituent transport and chemistry
DE: 3334 Middle atmosphere dynamics (0341, 0342)
DE: 3346 Planetary meteorology (5445, 5739)
DE: 3362 Stratosphere/troposphere interactions
DE: 3364 Synoptic-scale meteorology
SC: Atmospheric Sciences [A]
MN: 2003 Fall Meeting