Rainfall extremes cause significant socioeconomic impacts in Indonesia, as they are often followed by disastrous events, such as floods and landslides. Of particular interest is Java Island, the most populated region in Indonesia, which is prone to damaging flooding as a result of heavy rainfall. The prediction of rainfall extremes in this region has mainly been focused on the effects of seasonal and intraseasonal variability, such as monsoons and the Madden–Julian Oscillation. Here, using an extensive station database from 1987 to 2017 and the gridded Asian Precipitation‐Highly Resolved Observational Data Integration Toward Evaluation of Water Resources (APHRODITE) product from 1980 to 2007, we show that severe weather conditions associated with rainfall extremes in Java during the rainy season (November to April) can also be attributed to convectively coupled equatorial waves (CCEWs) that occur on a shorter time scale.

中文翻译：

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对流耦合赤道波对印度尼西亚爪哇降雨极端的影响

极端降雨在印度尼西亚造成重大的社会经济影响，因为随之而来的是洪水和山体滑坡等灾难性事件。印度尼西亚人口最稠密的爪哇岛特别令人关注，由于降雨过多，该岛容易遭受洪水泛滥。该地区极端降雨的预测主要集中在季节和季节内变化的影响上，例如季风和马登—朱利安涛动。在这里，我们使用了1987年至2017年的大型站点数据库，以及1980年至2007年的网格化亚洲降水－高分辨率水资源评估观测数据集成（APHRODITE）产品，