Some observed and theoretical aspects of the sudden stratospheric heating in the Northern and Southern Hemispheres

Details Some observed and theoretical aspects of the sudden stratospheric heating in the Northern and Southern Hemispheres Some observed and theoretical aspects of the sudden stratospheric heating in the Northern and Southern Hemispheres

Jan 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980ipe..rept.....b&link_type=abstract

M.S. Thesis Instituto de Pesquisas Espaciais, Sao Paulo (Brazil).

Mathematics

Logic

Atmospheric Temperature, Heat Transfer, Northern Hemisphere, Southern Hemisphere, Stratosphere, Stratospheric Warming, Eddy Viscosity, Meteorological Charts, Synoptic Meteorology

Scientific paper

Synoptic and dynamic characteristics of the stratospheric warming of January 1977 in the Northern Hemisphere and the final warming of 1969 in the Southern Hemisphere are discussed. In the Northern Hemisphere case many of the features of the warming event are similar to those of a major warming while in the Southern Hemisphere the warming is shown to be minor. Synoptic charts, calculations of the scale and kinetic energy distribution as a function of wavelength, show that planetary scale waves dominated before the warming and shorter waves became important after the warming. The generation of short waves might be due to barotropic instability or nonlinear interaction. Calculation of the efficiency of eddy transports of momentum and heat shows some interesting results. Eddies seem to be more efficient in transporting heat than momentum. Further, efficiency of heat transport increases substantially before the warming. Energetics of the 1977 warming event show many similarities to the previous calculations, although the (K sub E, K sub Z) conversion was different.

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