Abstract: Stratospheric disturbances on the 35?60 day time scale are investigated with particular emphasis on the Southern Hemisphere. The data used are stratospheric brightness temperatures from 90 to 1.5 hPa covering seven 6-month ...

Abstract: Careful spectral, correlation and coherence analyses of low-frequency fluctuations in global geopotential height data are presented. Attention is paid to proper statistical assessments. The main points are: 1) one-to-two ...

Abstract: Equatorial low-frequency oscillations with periods of 1?2 months are being intensively studied by many investigators. A strong equatorial ?dipole? pattern is observed in which atmospheric variables such as temperate, wind, ...

Abstract: No abstract available.

Abstract: Stratospheric circulation is investigated by further analyses of three years of Stratospheric And Mesospheric Sounder (SAMS) data. Eddy effects on constituent transport are investigated with two transport formulations the ...

Abstract: Thunderstorm radio noise measurements at several frequencies in the range 0.01?74 MHz have been made with specially designed remote recording stations in Iowa. The data were recorded during the spring and summer of 1974 ...

Abstract: The purpose of this note is to show that not all tornadic storms yield the same radio-frequency noise behavior. One funnel cloud observed gave significant radio noise over a frequency range from 2.5 to 144 MHz.

Abstract: The ?4-day wave? is an eastward moving quasi-nondispersive feature with period near 4 days occurring near the winter polar stratopause. This paper presents evidence of the 4-day feature in Microwave Limb Sounder (MLS) ...

Abstract: Structure and kinematics of carbon monoxide in the upper stratosphere and lower mesosphere (10?0.03 hPa) are studied for the early northern winter 1991/92 using the Upper Atmosphere Research Satellite Improved Stratospheric ...