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首页> 外文期刊>Chinese science bulletin >Change in the tilting of the ridgeline surface of the subtropical anticyclone and the predictability of the onset of the Asian summer monsoon
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Change in the tilting of the ridgeline surface of the subtropical anticyclone and the predictability of the onset of the Asian summer monsoon

机译：亚热带反气旋山脊面倾斜的变化和亚洲夏季风爆发的可预测性

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摘要

The NCEP/NCAR reanalysis data are used to study the relationships among the change in the tilting of the ridgeline surface of the subtropical anticyclone, the establishment of the so-called "seasonal transition axis (STA)" and the onset of the Asian summer monsoon. It is shown that the monsoon onset is characterized by the overturning of the meridional temperature gradient (MTG) in the vicinity of the ridgeline surface. A MTG index is then constructed to investigate the predictability of the Asian summer monsoon onset conceptually. Data diagnoses show that if the initial MTG is known and the meridional gradient across the ridgeline surface of the local temperature tendency can be estimated, a late or early onset of the summer monsoon can be qualitatively predicted in advance.
机译：NCEP / NCAR再分析数据用于研究亚热带反气旋脊线表面倾斜的变化，所谓的“季节转换轴（STA）”的建立以及亚洲夏季风爆发的关系。 。结果表明，季风爆发的特征是脊线表面附近的子午温度梯度（MTG）翻转。然后构建一个MTG指数，从概念上研究亚洲夏季风爆发的可预测性。数据诊断表明，如果已知初始MTG，并且可以估算出局部温度趋势的脊线表面的子午梯度，则可以提前定性地预测夏季风的晚期或早期发作。

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