Alex served as a Coordinating Lead Author for the Intergovernmental Panel on Climate Change Sixth Assessment Report (IPCC AR6), Working Group 1 Chapter 12: 'Climate information for regional impact and for risk assessment'. As part of his contribution he facilitates interactions between the IPCC working groups on climate science (WG1) and climate impacts, adaptation, and vulnerability (WG2). He was also a member of the Core Writing Team for the IPCC Synthesis Report that combined findings across all Working Groups and Special Reports of the AR6 Cycle. Dr. Ruane is also the founder and Co-Chair of the Vulnerability, Impacts, Adaptation, and Climate Services (VIACS) Advisory Board for the Sixth Phase of the Coupled Model Intercomparison Project (CMIP6), facilitating engagement between the climate modeling community and the VIACS communities that apply climate model outputs for societal benefit. Alex is a member of the Coupled Model Intercomparison Project (CMIP7) Panel, and serves on the Expert Committee for the United Nations Office for Disaster Risk Reduction (UNDRR) Global Risk Assessment Framework (GRAF), where he co-chairs the 'Fostering Systems Thinking' Working Group.