it is shown that to the north of a heating region, although there is no diabatic heating, there still exists deep negative vorticity forcing due to the horizontal inhomogeneous in the westerly flow.
结果表明加热区以北,虽然非绝热加热消失,但存在加热的水平梯度在西风环流的背景下在高低层造成深厚的负涡度强迫。