The Emergence of Shallow Easterly Jets within QBO Westerlies

摘要: AbstractA configuration of an idealized general circulation model has been obtained in which a deep, stratospheric, equatorial, westerly jet is established that spontaneously and quasi-periodically disrupted by shallow easterly jets. Similar to the disruption quasi-biennial oscillation (QBO) observed early 2016, meridional fluxes wave activity are found play central role. The possible relevance two feedback mechanisms these disruptions considered. first involves secondary produced shear zones on upper lower flanks jet. This role maintaining aspect ratio emerging second organization eddy mean flow: presence weak anomaly within tall, tropical, demonstrated produce enhanced highly focused reinforce strengthen anomalies. eddies appear be organized ...