The zonal circulation
that prevailed over western Europe during the whole month accounts for ~30% or 1.3[degrees]C of the temperature anomaly.
This low-pressure area acts like a scoop, picking up vast amounts of moisture and dumping it into a zonal circulation
crossing southern Africa from east to west.
We have sought to enhance our predictive capacity by statistically analyzing how surface temperature and pressure anomalies affect the overlying zonal circulation
and tropical convection.
A statistically significant correlation was detected between the atmospheric circulation indices and storminess at Vilsandi, while the characteristics of zonal circulation have a positive correlation and those of meridional circulation are related to no or a negative correlation (Jaagus et al.
Negative AO represents a weakening of zonal circulation.
The three first patterns describe the zonal circulation and the two last ones the meridional circulation.
In summarizing and reviewing student sketches and observed circulation patterns, we introduce angular momentum principles to rationalize the features of the corkscrew zonal circulation
. As in the nonrotating experiment, water in the outer region of the tank is displaced by cold waters flowing outward along the bottom, away from the ice can at the center.
The predictability of climate is partly attributable to the Pacific El Nino Southern Oscillation (ENSO) and its overlying zonal circulation .
In addition to the zonal circulation, the Hadley cell induces a large annual cycle over Ethiopia: soil moisture is depleted after January and replenished after June, when the equatorial trough reaches its northernmost limit.
An examination of the literature suggests that a single, original reference for an exact definition of SSWs is elusive, but in many references a definition involves the reversal of the meridional temperature gradient and, for major warmings, the reversal of the zonal circulation poleward of 60[degrees] latitude at 10 hPa.
The appeal of a definition based on the zonal circulation originates in work by Charney and Drazin (1961), Matsuno (1971), and others (O'Neill and Taylor 1979; Palmer 1981), who demonstrated that planetary-scale stationary waves cannot propagate into easterly flow.
Zwiers, 2010: Changes in equatorial atmospheric zonal circulations
in recent decades.