Intraseasonal (30-60 day) fluctuations of outgoing longwave radiation and 250 mb streamfunction during northern winter.

Abstract

Ten years of outgoing longwave radiation (OLR) and 250 mb circulation data are used in a statistical study which concentrates on 28-72 day fluctuations during Northern Hemisphere winter. The results of spectral and cross-spectral analyses show that 28-72 day planetary-scale oscillations of OLR and 250 mb circulation are statistically significant features of the entire 10-year dataset. -from Authors