气候变化领域集成服务门户(CCPortal): Taiwanese rainfall variability associated with large-scale climate phenomena

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DOI	10.1016/j.advwatres.2019.103462
	Taiwanese rainfall variability associated with large-scale climate phenomena
	Lee J.H.; Yang C.-Y.; Julien P.Y.
发表日期	2020
ISSN	0309-1708
卷号	135
英文摘要	Examining the physical mechanisms through which large scale climate indicators, e.g., El Niño-Southern Oscillation and Indian Ocean Dipole, affect hydroclimatic variables in the tropics and extratropics is a scientific challenge. In this study, climatic relationships between large-scale climate indices (CIs) and Taiwan rainfall variability were examined. Not only leading patterns of observed monthly total and extreme rainfall were estimated through an empirical orthogonal teleconnection method (EOT), but also correlation and regression analyses were performed for the leading rainfall patterns and various CIs based on atmospheric-ocean circulation dataset. From the spatial structure of the leading EOT patterns for total and extreme rainfall, the north-coast mode in the cold seasons and the middle-inland mode for the warm seasons were detected. The temporal cycle of the leading EOT patterns indicates decreasing trends in the cold seasons and oscillations mainly on decadal timescales in the warm seasons. The leading EOT patterns of total rainfall showed more widespread coherent patterns than those of extreme rainfall with more variance in rainfall variability. The findings from this study illustrate that tropical ENSO forcing has a coherent association with March and October–November rainfall patterns, while the Indian Ocean Dipole is identified as a driver for rainfall variability during spring and fall. The western North Pacific monsoon activity has a negative (positive) correlation with March (October and December) rainfall variabilities and tropical cyclone indices also exhibit significant positive correlation with October rainfalls. The leading patterns of the October and following-year March rainfall time series are predictable at up to nine-month lead time from the tropical Pacific sea surface temperatures (SSTs). © 2019
关键词	Atmospheric pressure Climatology Oceanography Regression analysis Storms Surface waters Tropics Correlation and regression analysis ENSO Hydroclimatic variables Positive correlations Rainfall variability Sea surface temperatures Teleconnections Western North Pacific Rain air-sea interaction atmospheric circulation El Nino-Southern Oscillation extratropical environment Indian Ocean Dipole oceanic circulation precipitation intensity rainfall sea surface temperature teleconnection time series tropical cyclone Pacific Ocean Pacific Ocean (North)Pacific Ocean (Tropical)Taiwan
语种	英语
来源机构	Advances in Water Resources
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/131887
推荐引用方式 GB/T 7714	Lee J.H.,Yang C.-Y.,Julien P.Y.. Taiwanese rainfall variability associated with large-scale climate phenomena[J]. Advances in Water Resources,2020,135.
APA	Lee J.H.,Yang C.-Y.,&Julien P.Y..(2020).Taiwanese rainfall variability associated with large-scale climate phenomena.,135.
MLA	Lee J.H.,et al."Taiwanese rainfall variability associated with large-scale climate phenomena".135(2020).