Abstract: The signal in the winter stratosphere on the Northern Hemisphere of a warm event in the Southern Oscillation is a warm polar vortex with a weak westerly circulation. This signal failed to appear in two warm events which ...

Abstract: The pattern in the Northern Hemisphere of correlation between the 11-year solar cycle and temperatures or geopotential heights at 100 and 30 mb has large positive correlation coefficients in tropical and middle latitudes. ...

Abstract: We describe a 10?12-year oscillation (abbreviated to TTO in the following) in the upper troposphere and lower stratosphere of the Northern Hemisphere in summer. The TTO has been presented since the time series began in ...

Abstract: The mean anomalies of 50 mb height in the northern winter for seven Warm Events in the Southern Oscillation show a weak polar vortex and an enhanced Aleutian high. In the mean for six Cold Events the polar vortex is unusually ...

Abstract: The authors correlate the 23-yr series of reanalyzed 30-hPa heights and temperatures and 10-hPa heights with the 11-yr solar cycle for the summers of both hemispheres and for the annual mean. The size and spatial pattern ...