Every austral spring, an ominous "hole" appears in stratospheric ozone over Antarctica.

每逢南半球春季，南极洲平流层中都会出现不祥的臭氧层空洞。

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The analysis also showed that austral spring SAM events that coincide with ENSO are preceded by strong stratospheric SAM anomalies.

此外，研究发现南北球春季对流层的SAM/ENSO事件多由平流层的SAM信号引导。

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