Our simulations confirm existing concepts that modifications of the extra-tropical general circulation of the middle atmosphere during the easterly and westerly QBO phases could be produced by changes in refractive indexes, PW propagation conditions, and subsequent PW drag of the mean flow.
An anti-cyclone remained stationary over Scandinavia from the middle of January, producing cold easterly winds and repeated snowstorms.
PW and NAM amplitudes can have peak differences up to ±30 90 % at middle and high latitudes between the easterly and westerly QBO phases in tropics.
With the strongest El Niño in at least twenty years, the Balinese are witnessing strangely dry easterly winds in the middle of their rainy season.
By the middle of August 1797, after six weeks of constant easterly winds that kept his ships trapped in their harbour, De Winter decided that an attempt to join the French at Brest as the first stage of an invasion of Ireland was impractical and he abandoned the plan.
Upon its formation, the center was poorly defined, with restricted easterly outflow due to easterly wind shear.
In Palau and Saipan, the easterly deflected declinations were observed in the lower to middle Miocene as well as in the Eocene and Oligocene (Haston and Fuller, 1991).
Within the belts of the westerly winds, cold easterly winds from polar regions meet the warm westerly winds of the middle latitudes, causing the formation of the traveling depressions characteristic of middle latitudes.
Figures 5c and 6c show that changes in the horizontal and vertical structures of background wind and temperature between westerly and easterly QBO phases can produce substantial differences in refractive indexes at the middle and high latitudes of both hemispheres in the middle atmosphere.
With the strange exception of Argentina, the middle classes of Latin America are bulwarks of economic orthodoxy and fiscal rectitude.New York University's Mr Easterly has found that the larger a country's middle class, the lower its indicators of every sort of instability, be it revolutions and coups, outbreaks of civil war, constitutional changes or suppression of civil rights.
