LOW-FREQUENCY OSCILLATIONS OF THE LARGE-SCALE STRATOSPHERIC TEMPERATURE FIELD


X. H. Gao, and J. L. Stanford, Department of Physics and Astronomy, Iowa State University, Ames, IA 50011


J. Atmos. Sci., 44, 1991-2000 (1987)


Abstract

Low-frequency analyses are reported for four years of 3-day-mean satellite microwave and infrared data representative of temperatures in the stratosphere. In data representative of 30-150 mb temperatures, oscillations with 39-51 day periods are observed as a tropical dipole pattern in the Indonesia/central Pacific. In addition, the first evidence is presented for such oscillations in the southeast Pacific. Furthermore, significant 39-51 day oscillations are observed in the mid- and upper stratosphere, centered near 60 degrees South latitude.