上新世早期的大气环流被减弱，因此垂直风切变减小，助长了热带气旋的发展。

Tthe early Pliocene had a weakened atmospheric circulation, and therefore, reduced vertical wind shear, which is favorable for tropical cyclone growth.

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据某些全球环流模型预测，21世纪的亚马逊地区可能更干燥。这种概率的上升有可能促使亚马逊成为火灾多发区。

The higher probability of a drier Amazon in the 21st Century predicted by some global circulation models... may push Amazonia towards an amplified fire-prone system.

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