Arry Simon, Climate Assessment Officer at the Department of Environment and AOSIS’ lead coordinator on Research and Systematic Observations (RSO), delivered a firm closing statement at this week’s climate negotiations—warning that scientific truth must remain at the heart of global climate action.

Simon expressed deep disappointment over the decision to delay the Periodic Review (PR)—a key process that measures global progress against IPCC science and the 1.5°C goal—until COP31, calling it a setback for vulnerable nations that depend on timely accountability.

“This review is not just a technical exercise—it’s a lifeline,” Simon stressed, adding that AOSIS expects the PR decision to move forward next year.

Despite this setback, Simon welcomed the successful conclusion of the RSO agenda item, which recognized advances in climate science, worsening global climate indicators, and the importance of systematic observation for mitigation, adaptation, early warning systems, and loss and damage. AOSIS also praised support for the Systematic Observations Financing Facility (SOFF), which prioritizes Small Island Developing States and Least Developed Countries.

However, he voiced concern that negotiators failed to properly acknowledge the central role of the IPCC or explicitly recognize alarming climate signals, including accelerating sea-level rise and the warmest decade on record.

“The way fundamental truths—scientific truths and lived truths—were challenged in the room is concerning,” he said.

Simon’s message was unmistakable: AOSIS is vigilant, science must drive decisions, and delays threaten the very survival of small island nations. As attention turns to COP31, he signaled that the bloc will intensify its push for stronger, science-based climate action.