HR: 08:45h
AN: NG41A-04 INVITED     [PDF]
TI: Airborne Studies of Scale Invariance in the Polar Night Jet Stream
AU: * Tuck, A F
EM: tuck@al.noaa.gov
AF: NOAA Aeronomy Laboratory R/AL6, 325 Broadway, Boulder, CO 80305-3328 United States
AU: Hovde, S J
AF: NOAA Aeronomy Laboratory R/AL6, 325 Broadway, Boulder, CO 80305-3328 United States
AU: Hovde, S J
AF: CIRES, University of Colorado, Boulder, CO 80309-0215 United States
AU: Richard, E C
AF: NOAA Aeronomy Laboratory R/AL6, 325 Broadway, Boulder, CO 80305-3328 United States
AU: Richard, E C
AF: CIRES, University of Colorado, Boulder, CO 80309-0215 United States
AU: Bui, T P
AF: NASA Ames Research Center, Moffett Field, Mountain View, CA 94035-1000 United States
AU: Loewenstein, M
AF: NASA Ames Research Center, Moffett Field, Mountain View, CA 94035-1000 United States
AB: Airborne observations in both hemispheres of the lower stratospheric polar night jet stream revealed generalized scale invariance. The scaling exponent H$_{z}$ for wind speed and temperature had systematic correlations with wind shear and temperature gradient respectively, showing persistence across-jet, anti-persistence along-jet and a canonical mean value of H$_{z}$ = 5/9. A passive scalar, nitrous oxide, had H$_{z}$ = 0.56 with s.d. = 0.01, while photochemically active ozone had 0.49 with the same s.d. The intermittency of temperature was 2-3 times larger than that of wind speed or ozone. The analysis appears to provide a natural connection between generalized scale invariance of high resolution observations and traditional large-scale dynamical meteorology.
DE: 3250 Fractals and multifractals
DE: 3334 Middle atmosphere dynamics (0341, 0342)
DE: 3349 Polar meteorology
DE: 3379 Turbulence
SC: Nonlinear Geophysics [NG]
MN: 2003 Fall Meeting