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The purpose of this paper is to look into how collaborations among science and technology groups and other stakeholders in the Asia-Pacific region can facilitate implementation of national and local disaster risk reduction (DRR) strategies through education, training and field practice. Case studies on transdisciplinary approach (TDA) that integrates cross-cutting DRR issues and various stakeholders through science and technology are introduced from several countries in the region as attempts to holistically support societies build and strengthen their disaster resilience.

First, through literature review, the transition from single discipline to TDA is illustrated in which various stakeholders of different disciplines work together to achieve a common societal goal. This is followed by introduction of several case studies of actual TDA implementation for DRR in which information had been gathered through surveys and interviews with international science and technology stakeholders. Finally, through analysis and discussion, the study identifies the key roles of science and technology stakeholders for facilitating TDA for DRR.

The study concludes with key findings on the specific roles of science and technology including provision of education and training to build capacities of DRR practitioners to effectively plan and implement DRR measures, support to evidence-based decision making through locally specific scientific assessments and analysis and validation scientific information on the actual field for DRR practitioners and agencies. In materializing these roles into action, institutionalization of supporting policies and budget provision that promotes TDA are suggested.

Even though TDA is not a new concept and many stakeholders understand its importance, TDA has not been widely exercised mainly due to conventional practices of experts and organizations working only within their groups and disciplines. With this understanding, this study has newly identified eight key elements that can be used as a guide and checklist for DRR stakeholders to effectively implement TDA for strengthening disaster resilience of their societies.

The present study aims to evaluate the effect of climate change on the flood hazard potential in the Kelantan River Basin using current and future scenarios.

The intensity-duration-frequency (IDF) was used to estimate the current 50- and 100-year return period 24-h design rainfall, and the climate change factor (CCF) was used to compute the future design rainfall. The CCF was calculated from the rainfall projections of two global climate models, CGCM1 and CCSM3, with different pre-processing steps applied to each. The IDF data were used in the rainfall-runoff-inundation model to simulate current and future flood inundation scenarios.

The estimated CCF values demonstrate a contrast, whereby each station had a CCF value greater than one for CGCM1, while some stations had a CCF value of less than one for CCSM3. Therefore, CGCM1 projected an aggravation and CCSM3 a reduction of flood hazard for future scenarios. The study reveals that topography plays an essential role in calculating the CCF.

To the best of the author’s knowledge, this is the first study to examine flood projections in the Kelantan River Basin. It is, therefore, hoped that these results could benefit local managers and authorities by enabling them to make informed decisions regarding flood risk mitigation in a climate change scenario.