Trends in rainfall and rainfall-related extremes in the east coast of peninsular Malaysia

Mayowa, Olaniya Olusegun; Pour, Sahar Hadi; Shahid, Shamsuddin; Mohsenipour, Morteza; Harun, Sobri; Heryansyah, Arien; Ismail, Tarmizi

doi:10.1007/s12040-015-0639-9

Cited by 131 publications

(65 citation statements)

References 40 publications

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“…Suhaila et al () and Wang et al () also reported an increase in the NEM rainfall in the IWC zone and almost no change of the SWM rainfall in Peninsular Malaysia for the periods 1975–2004 and 1971–2006, respectively. In the case of extreme rainfall events, Mayowa et al () found a substantial increase in p95 in the NE zone for the period 1971–2010. Syafrina et al () also reported an increase in p95 at nine out of 25 stations in the WC, NE and CT zones during the NEM over the period 1975–2010.…”

Section: Discussionmentioning

confidence: 99%

“…In the case of climate, it is a trend over more than 50 years where the cyclic or seasonal effect is minimal and the climatic effect is more (Antonio et al, 2018). Several studies have been conducted in Peninsular Malaysia in recent years to assess trends in rainfall and rainfall extremes (Wong et al, 2009;Deni et al, 2010;Suhaila et al, 2010aSuhaila et al, , 2010bMayowa et al, 2015;Syafrina et al, 2015;Othman et al, 2016;Wong et al, 2016). Various periods of data were used in those studies to report trends in different rainfall indices in Peninsular Malaysia.…”

Section: Introductionmentioning

confidence: 99%

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Spatial distribution of secular trends in rainfall indices of Peninsular Malaysia in the presence of long‐term persistence

Khan

Pour

Shahid

et al. 2019

Meteorological Applications

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The presence of long‐term persistence (LTP) in hydroclimatic time series can lead to considerable change in the significance of trend. Therefore, past findings of climatic trend analysis without considering LTP in time series has become a disputable issue. The objective of this study was to assess the spatial patterns in the trends of annual and seasonal rainfall amounts and extremes in Peninsular Malaysia considering LTP. Daily rainfall data of APHRODITE (Asian Precipitation – Highly‐Resolved Observational Data Integration Towards Evaluation) for the period 1951–2007 was used to assess the trends using the classical Mann–Kendall (MK) test and the modified version of the MK test, which can remove the influence of LTP in the significance of trends. The results indicate that significant trends in different rainfall indices of Peninsular Malaysia obtained using the MK test reduced drastically when LTP was taken into consideration. There was almost no change in annual and seasonal rainfall amounts, which contradicts the findings of previous studies. The field significance of regional trends revealed an increase in wet spells at an average rate of 4.8 and 4.9 days/decade in the southeast and the southwest respectively during the northeast monsoon, and a decrease in rainy days by −1.4 days/decade in the north and an increase both in dry spells by 1.0 day/decade in the southeast and in the maximum 1 day rainfall by 1.7 mm/decade on the west coast during the southwest monsoon. The results indicate that the trends in rainfall indices reported in the maritime continent in previous studies should be re‐evaluated as most of them are due to LTP.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Spatial distribution of secular trends in rainfall indices of Peninsular Malaysia in the presence of long‐term persistence

Khan

Pour

Shahid

et al. 2019

Meteorological Applications

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“…In comparison, the west coast of Malaysia is reasonably sheltered from southwest monsoonal storms by Sumatra. Furthermore, annual rainfall in eastern Peninsular Malaysia is becoming increasingly variable and torrential (Varikoden et al 2011;Mayowa et al 2015). The environmental differences on either side of Peninsular Malaysia are likely responsible, or at least contributing factors that are responsible, for generating the observed disparity in endosymbiont richness between the two regions.…”

Section: Discussionmentioning

confidence: 99%

Endosymbiont diversity and community structure in Porites lutea from Southeast Asia are driven by a suite of environmental variables

et al. 2020

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Many corals depend upon the highly specialised and intricate relationship they form with Symbiodiniaceae algal symbionts. Porites lutea is a massive reef-building coral found throughout Southeast Asia that hosts these endosymbionts obligately. Yet despite the prevalence and importance of P. lutea as one of the most dominant corals here, its associated Symbiodiniaceae communities have not been precisely characterised. In this study, we used high-throughput DNA amplicon sequencing of the nuclear internal transcribed spacer 2 (ITS2) to characterise the diversity, community structure and biogeographic distribution of Symbiodiniaceae in P. lutea throughout Singapore and Peninsular Malaysia. Consistent with previous studies, we found that Cladocopium was the most dominant genus among all samples, and Cladocopium C15 was the most dominant type (or subclade) with 100% occurrence in all samples from every study site. Results also revealed numerous Symbiodiniaceae types associated with P. lutea that were previously undetected in Southeast Asia. Endosymbiont diversity and community variation are driven by a combination of site-specific mean monthly cloud cover and variance in monthly sea surface temperature. This study contributes baseline data toward understanding differences in Symbiodiniaceae assemblages hosted by P. lutea, shedding light on how they might be indicative of particular environmental conditions and coral responses.Electronic supplementary material The online version of this article (https://doi.

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“…Increasing risk of flood in recent years has posed a major challenge in the Malaysian development [14], [15]. A number of recent studies revealed increasing frequency and severity of rainfall extremes in peninsular Malaysia [16], [17]. It can be anticipated that changes in rainfall pattern have not only changed the return period of flood peak, but also the flood duration and volume.…”

Section: Introductionmentioning

confidence: 99%

Flood susceptibility assessment in Kelantan river basin using copula

Nashwan

Ismail

Ahmed

2018

IJET

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Bivariate frequency analysis of flood variables of different station locations of Kelantan river basin was conducted using copula for the assessment of the geographical distribution of flood risk. Seven univariate distribution functions of flood variables were fitted with flood variables such as peak flow, flood volume, and flood duration to find the best-fitted distributions. The joint dependent structures of flood variables were modeled using Gumbel copula. The results of the study revealed that different variables fit with different distributions. The correlation analysis among variables showed a strong association. Joint distribution functions of peak-flow and volume, peak-flow and duration, and volume and duration revealed that the joint return periods were much higher than univariate return periods of same flood variables. The flood risk analysis based on joint return period of flood variables revealed the highest risk of devastating flood in the downstream. The locations identified as highly susceptible to flood risk by joint distributing of flood variables had experienced most severe floods in recent history, which indicates the effectiveness of the method for the analysis of flood risk. It is expected that this procedure can be helpful for better assessment of flood impacts.

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Trends in rainfall and rainfall-related extremes in the east coast of peninsular Malaysia

Cited by 131 publications

References 40 publications

Spatial distribution of secular trends in rainfall indices of Peninsular Malaysia in the presence of long‐term persistence

Spatial distribution of secular trends in rainfall indices of Peninsular Malaysia in the presence of long‐term persistence

Endosymbiont diversity and community structure in Porites lutea from Southeast Asia are driven by a suite of environmental variables

Flood susceptibility assessment in Kelantan river basin using copula

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