References(11) Cited-By(7) Supplementary materials(1) Numerical experiments are performed using a non-hydrostatic regional climate model with a horizontal resolution of 5 km to study changes in the characteristic features of disturbances appearing over the Baiu frontal zones due to global warming. In this study, disturbances are defined as those with precipitation greater than 20 mm/6 hr within a radius of 100 km. An increase in the number of disturbances is found in the Baiu frontal zone over western Japan in the warming climate. The increase is caused by the lengthening of the Baiu duration. In addition, the disturbances are likely to be much more detected by the intensification of precipitation. Among such disturbances, those with intense precipitation and eastward-tilting vertical structures in high-pass-filtered fields are more frequently seen in the warming climate. They are considered to be meso-α-scale baroclinic instability modified by diabatic heating due to large precipitation. Our results suggest that the changes in the numbers of disturbances are induced by an increase in the supply of water vapor to the Baiu frontal zone and convectively unstable stratifications in the lower atmosphere.
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机译：参考文献（11）被引用的参考文献（7）补充材料（1）使用水平方向为5 km的非静水区域气候模型进行数值实验，以研究在Baiu锋区上出现的扰动特征变化导致全球变暖。在本研究中，扰动定义为在100 km半径内降水大于20 mm / 6 hr的扰动。随着气候变暖，在日本西部的Baiu额叶带发现了许多干扰物。该增加是由于Baiu持续时间的延长引起的。此外，降水的增加可能会更多地检测到干扰。在这些扰动中，在变暖的气候中更常见于高通滤波场中具有强降水和向东倾斜的垂直结构的扰动。由于大量的降水，它们被认为是通过绝热加热而改变的中尺度α斜压不稳定性。我们的研究结果表明，扰动数量的变化是由向Baiu锋区供应的水蒸气增加以及在较低大气层中对流不稳定的分层引起的。
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