Abstract: The global wind oscillation (GWO) is a subseasonal phenomenon encompassing the tropical Madden?Julian oscillation (MJO) and midlatitude processes like meridional momentum transports and mountain torques. A phase space is ...

Abstract: An eigenvector analysis is used to characterize global-scale, intraseasonal variability in satellite-derived outgoing longwave radiation fields and NMC analyzed circulation fields. Five-day average covering November-March ...

Abstract: A global synoptic?dynamic model (GSDM) of subseasonal variability is proposed to provide a framework for real-time weather?climate monitoring and to assist with the preparation of medium-range (e.g., week 1?3) predictions. ...

Abstract: The angular momentum cycle of the Madden?Julian oscillation is analyzed by regressing the zonally averaged axial angular momentum (AAM) budget including fluxes and torques against the first two principal components P1 and ...

Abstract: A technique of near-real-time monitoring and prediction of various modes of coherent synoptic to intraseasonal zonally propagating tropical variability is developed. It involves Fourier filtering of a daily updated global ...

Abstract: The period 1 December 1984 to 3 February 1985 was associated with strong intraseasonal fluctuations in both the global atmospheric angular momentum (AAM) and tropical convection. Consistent changes were observed in the ...

Abstract: Lagged cross correlations between outgoing longwave radiation (OLR) and National Meteorological Center global analyses are utilized to isolate the preferred upper-level and surface circulation anomalies associated with ...

Abstract: Statistical evidence is presented to support the notion that tropical convection in the eastern Pacific and Atlantic intertropical convergence zone (ITCZ) during northern winter can be forced by disturbances originating ...

Abstract: This note evaluates the numerical schemes used for computing the axial component of the mountain torque from gridded global surface pressure and topography datasets. It is shown that the two formulas of the mountain torque ...

Abstract: Life cycles of the 30?60 day atmospheric oscillation were examined by compositing 30?60 day filtered NMC global wind analyses (250 mb and 850 mb) and outgoing longwave radiation (OLR) for the years 1979?84. Separate composite ...