4B.1
The influence of the QBO on tropical deep convection
C. C. Collimore, Univ. of Wisconsin, Madison, WI; and D. W. Martin, M. H. Hitchman, and A. Heusmann
We compare a 23-year record of OLR, a measure of convection, to meteorological parameters near the tropopause from the NCEP reanalysis data set. We focus on tropopause height and the lower stratospheric to upper tropospheric zonal wind shear. Do these parameters correlate well with OLR? A higher tropopause would allow for deeper convection (lower OLR) as would weaker shear. We also compare the 17-year Highly Reflective Cloud (HRC) data set with tropopause height and zonal wind shear. We analyze quantities averaged over vast regions of the tropics as well as gridded data which contain information on spatial variability.
Session 4B, Interannual variations in the tropics (Parallel with Sessions 4A and J1)
Wednesday, 24 May 2000, 8:00 AM-9:30 AM
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