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首页> 外文期刊>Geophysical Research Letters >The influence of the equatorial upper stratosphere on stratospheric sudden warmings - art. no. 1166
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The influence of the equatorial upper stratosphere on stratospheric sudden warmings - art. no. 1166

机译：赤道高空平流层对平流层突然变暖的影响-艺术没有。 1166

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A stratosphere mesosphere model is used in a set of idealized experiments to investigate the sensitivity of the Northern Hemisphere winter stratospheric flow to the equatorial zonal winds in the upper and the lower stratosphere. Sensitivity is found to the lower stratospheric winds ( below 40 km) only in the early part of the model integration as the model relaxes towards a perpetual winter state. On the other hand the model showed significant sensitivity to the upper stratospheric winds throughout the major part of the integration. This has possible implications for the influence of the quasi-biennial oscillation (QBO) and solar cycle on the northern winter stratospheric flow. It suggests that the lower stratospheric QBO may influence the early winter, but later in the winter when the flow is highly non-linear the greatest influence may come from variations in the semi-annual oscillation (SAO) which dominates the equatorial winds in the upper stratosphere. Possible sources of variations in the SAO include both the influence of the QBO and of the 11-year solar cycle. [References: 13]
机译：在一组理想化实验中使用了平流层中层模型，以研究北半球冬季平流层流对上，下平流层赤道纬向风的敏感性。当模型向永久的冬季状态放松时，仅在模型集成的早期阶段才发现对平流层较低的风（低于40 km）敏感。另一方面，该模型在整个积分的主要部分对平流层高层风显示出显着的敏感性。这可能对准双年度振荡（QBO）和太阳周期对北部冬季平流层流的影响具有影响。这表明较低的平流层QBO可能会影响初冬，但在冬季后期，当流量高度非线性时，最大的影响可能来自主导上层赤道风的半年振荡（SAO）的变化。平流层。 SAO变化的可能来源包括QBO和11年太阳周期的影响。 [参考：13]

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