CLIVAR/WCRP Issues Imperatives WCRP Restructuring Relationship to WCC3 Outcomes: Climate Services WCRP Restructuring Modeling Council

CLIVAR Imperatives Anthropogenic Climate Change Decadal Variability, Predictability and Prediction Improved Atmosphere and Ocean Components of the Climate System Data Synthesis, Analysis and Uncertainty Ocean Observing System Capacity Building

What is your panels/working-groups workload with regards to the CLIVAR imperatives in %

WCC3-Climate Services The Global Climate Observing System and all its components and associated activities; and provision of free and unrestricted exchange and access to climate data; The World Climate Research Programme, underpinned by adequate computing resources and increased interaction with other global climate relevant research initiatives. Climate services information systems taking advantage of enhanced existing national and international climate service arrangements in the delivery of products, including sector-oriented information to support adaptation activities; Climate user interface mechanisms focused on building linkages and integrating information, at all levels, between the providers and users of climate services; and Efficient and enduring capacity building through education, training, and strengthened outreach and communication.

What is your panels/working-groups contribution to the Climate Service Elements in %

SSC Actions WGSIP to develop a position on the optimal communities to interact with, providing feedback on these to global modelling centers (WGSIP). Increase visibility of CHFP via, e.g., a future WCRP CHFP workshop and at the next WGNE meeting (WGSIP).

WCRP Modeling Restructuring Promoting the confrontation of models with observations and results of process studies; Promoting collaboration amongst various climate science communities (includes numerical weather prediction (NWP), seasonal to interannual prediction and climate projection communities as well as those dealing with biogeochemistry, air quality, terrestrial ecology, etc.); Promoting application of models to problems of societal relevance, quantifying uncertainties and making sure they are well communicated and understood; Promoting the development of model improvements.

Modeling Recommendation Well established panels and working groups should be maintained. A need for a coordinating group was identified, which could be described as a “Modelling Council”, to engage JSC members and Chairs of existing/future modelling groups to identify the common integrating themes and define the best approach to achieve them. The “Council” could have a one-day session at JSC meetings and could be responsible for organizing semi-regular WCRP- wide modelling conferences and cross-cutting targeted activities, similar to the World Modelling Summit and US Climate Process Teams.

JSC Discussion Modelling Council concept would allow the Projects to be better connected to the WCRP modelling efforts. WCRP modelling infrastructure should be flexible to allow focusing efforts where they were most needed. Need to include a means to exchange learning at fine scales to determine if parameterization was the correct approach or whether these fine-scale processes needed to be resolved in climate models. Need for a systematic study of the role of horizontal and vertical resolution in climate models. Model evaluation and quality assessment were also important roles for WCRP It was noted that confronting models with observations would be a first step in this direction. Would Modelling Council meet all the needs for coordination across WCRP and that a standing cross-WCRP modelling committee was needed. Ocean modelling was not discussed in the white paper and that this needed to be taken into account in the future.