Fourth Workshop on ASEAN Regional Climate Data, Analysis and Projections (ARCDAP-4)
The ASEAN Regional Climate Data, Analysis and Projection (ARCDAP) workshop series is an initiative led by the ASEAN Specialised Meteorological Centre (ASMC) and delivered by the Centre for Climate Research Singapore (CCRS) under the Meteorological Service Singapore (MSS). The series began in 2018 following a proposal from the World Meteorological Organization (WMO) Regional Association V Working Group on Climate Service (WG-CLS), which called for stronger regional collaboration within ASEAN to improve the development of regional and national climate change projections.
ARCDAP-4 was held in person in Singapore from 21 to 24 April 2025. The workshop brought together 40 participants from ASEAN National Meteorological and Hydrological Services (NMHSs), regional research institutions, international climate experts, and sectoral specialists working on climate change impacts (Figure 1). The workshop centred on the theme, “Applications of High-resolution regional climate change projections for Southeast Asia climate impact studies.”
The ARCDAP-4 workshop was designed to strengthen regional understanding and capacity in the use of high-resolution climate information for Southeast Asia. Its key objectives were to consolidate knowledge of the current status of high-resolution regional climate projections for the region, including initiatives such as CORDEX-SEA and Singapore’s Third National Climate Change Study (V3), and to support climate change impact studies by improving participants’ understanding and application of climate projection data. The workshop also aimed to deepen understanding of climate impact metrics, strengthen regional collaboration and capacity-building around observational datasets, climate projections, and impact assessments, and provide practical training on CCRS’s V3 Data Visualization Portal (DVP) and V3 Data Sharing Portal (DSP). In addition, it sought to develop a set of recommendations for the use of high-resolution regional climate projections in sectoral climate change impact studies.
Figure 1: ARCDAP-4 participants’ group photo taken on Day 1.
The post-workshop survey results showed that all participants ranked the workshop organisation from Very good to Excellent. When asked to rank the question, “How relevant was the workshop content to your professional work in climate science, service, or policy?”, all participants indicated either Relevant (38.5%) or Very Relevant (61.5%). Overall, the participants are satisfied with the workshop format, content, presentations, and various themed sessions and group activities. All participants also expressed interest in attending ARCDAP-5 if it’s planned.
