CLIVAR (Climate and Ocean: Variability, Predictability and Change) is one of the six core projects of the World Climate Research Programme (WCRP). CLIVAR’s mission is to understand the dynamics, the interaction, and the predictability of the climate system with emphasis on ocean-atmosphere interactions.

Pan-CLIVAR 2025 will bring together CLIVAR members from all panels, Research Foci, and scientific steering group (SSG), as well as representatives from WCRP core-projects and external partners with the aims:

• to develop ideas and input for the next CLIVAR science and implementation plan;
• to foster interactions across panels, WCRP core projects, and partners;
• to evaluate progress, formulate future priorities, and enhance members cohesion;
• to establish new research foci; and
• to engage scientists and stakeholders in southeast Asia.

This will be the second Pan-CLIVAR after the first one in 2014 in The Hague. The 2014 meeting was instrumental for the development of the current decadal CLIVAR science plan (2018-2028). The 2025 Pan-CLIVAR Meeting (Pan-CLIVAR 2025) will initiate the formulation of the next science plan.

Pan-CLIVAR 2025 will be held in hybrid mode (in-person and on-line), consisting of individual panels and Research Foci meetings, SSG sessions, cross-panel meetings, plenaries, and a 1-day Symposium on 24 September with breakout sessions in the morning of 25 September. This year 2025 marks the 30th Anniversary of CLIVAR.

Participation to Pan CLIVAR Meeting is by invitation only and is prioritized for CLIVAR members, partners and the WCRP activities. The Symposium, however, is open to all, subject to seat limitation.

CLIVAR Symposium: Bridging Science and Society in Southeast Asia and Beyond

The Pan-CLIVAR 2025 will be held in Indonesia, at the heart of the Indo-Pacific Warm Pool, a key component of the global climate system. The archipelago, made up of more than 17,000 islands, is a conduit for the Indonesian Throughflow (ITF) that transports a huge amount of water from the Pacific into the Indian Ocean at the rate of 15 million cubic meters per second. The warm pool anchors the main centre of the world's tropical convection - the engine room of the global atmospheric circulation. Indonesia and the surrounding countries in Southeast Asia are susceptible to the impacts of climate variability and change. Climate phenomena such as the El Niño Southern Oscillation (ENSO), Indian Ocean Dipole, Madden Julian Oscillation, and Monsoons variability, directly affect agriculture, fisheries, environment, economy, and thus livelihood and societal well-being in the region. The impacts are often conveyed through interactions with complex ocean and atmospheric processes at various temporal and spatial scales (e.g., compound events, marine heatwaves, atmospheric rivers, droughts, floods, cyclones, biogeochemical and sea level extremes, etc.). 

Ocean-atmosphere processes across tropical oceans, and in the extratropics, including the Arctic and Antarctica, interact with one another leading to changes in climate variability that in turn impact various components of the climate system, affecting heat and freshwater exchanges (e.g., via the ITF, the Atlantic Meridional Overturning, and large-scale tropical atmospheric cells), biogeochemistry and the carbon cycle. All these processes and their impacts are occurring in the backdrop of a changing global climate. Improving our understanding of these complex processes requires advances in observations, theory, and modeling of all ocean basins, supported by technological advances, and an inclusive international collaboration. This will lead to more accurate climate predictions and projections that can be reliably utilized by society to manage risks and resources in a changing climate. 

The symposium calls for the scientific community to address all of the aforementioned topics, highlighting the recent progress, gaps and challenges. Abstract submissions are open for the following overarching themes:

• Climate Variability and Change
• Ocean Processes and Extremes (e.g., MHW, sea level rise, Indonesian throughflow)
• Atmospheric Processes and Climate Dynamics (e.g., Monsoons, inter-basin interactions)
• Cascading and Compound Events
• Biogeochemical Processes and Climate Interactions
• Artificial Intelligence: Role in Climate-Ocean Research and Prediction
• Ocean-Climate Observations and Modelling
• Societal Impact
  

Call for Symposium abstracts

• Call for Symposium abstracts opens: 11  March 2025
• Deadline to submit an abstract: 11 April 2025, 23h59 CEST
• Abstract acceptance status: 9 May 2025

Registration

• Pan-CLIVAR and the Symposium open: 11 March 2025
• Pan-CLIVAR and Symposium registration closes: 15 June 2025, 23h59 CEST

Travel support application

• Travel support application opens: 11 March 2025
• Symposium travel support application closes: 15 April 2025, 23h59 CEST
• Pan-CLIVAR travel support closes: 15 April 2025, 23h59 CEST
• Notifications of financial support status: 15 May 2025

Programme

• Preliminary programme: 1 June 2025
• Final programme: 30 June 2025

22-26 September 2025: Pan-CLIVAR Meeting and CLIVAR Symposium "Bridging Science and Society in Southeast Asia and Beyond".