Extreme Rainfall Indices for Tropical Monsoon Countries in Southeast Asia
Abstract: Southeast Asian
countries have the possibility to have rainfall and number of extreme rainfall
event change due to future climate variation. This paper proposed three extreme
rainfall indices as a modification of climate extremes indices from CLIMDEX
Project by researchers at the Climate Change Research Centre (CCRC), the
University of New South Wales (UNSW). The proposed indices aim to be used as a
parameter for observing extreme rainfall events in tropical monsoon countries.
Eleven extreme precipitation indices from CLIMDEX Project and the three
proposed extreme precipitation for tropical monsoon countries are
systematically analyzed based on data of daily rainfall from meteorological
stations in Bangkok and Jakarta. Mann-Kendall test was used to observe the
trend of extreme rainfall. In general, the analysis of a total of 14 extreme
indices show both Bangkok and Jakarta received more rainfall during rainy
season and less rainfall during dry season. Specifically, a significant
increasing trend of extreme rainfall indices (R60 and R80) was revealed using
the proposed indices.
Author: Kusumastuti, C.,
Weesakul, S
Juournal Code: jptsipilgg140034
