Trends in return levels of 24-hr precipitation extremes during the typhoon season in Taiwan

摘要

This study is to investigate changes in maximum 24-hr precipitation for 20 stations during the typhoon season (July-October) and how the El Nino-Southern Oscillation (ENSO) may modulate precipitation extremes in Taiwan. Based on the non-parametric Mann-Kendall method and Sens's test, 15 out of 20 stations (three fourth) exhibited an upward trend from 1958 to 2013. Results of the field significance test suggest that the significant increasing trend is not caused by random variability.