Sampling Physical Ocean Fields inWCRP CMIP5 Simulations CLIVAR Working Group for OceanModel Development (WGOMD) Committee on CMIP5 OceanModel Output

This document presents recommendations for sampling physical ocean fields for the World Climate Research Program (WCRP) Coupled Model Intercomparison Project #5 (CMIP5) numerical experiments. These experiments are of particular interest for the 5th IPCC assessment (IPCC-AR5). We include guidelines for space and time sampling, and rationalizations for a list of fields to be archived. The perspective taken here is that of physical ocean scientists aiming to enhance the scientific utility of model simulations contributing to CMIP5. We focus on the liquid ocean in this document. The audience for this document includes the CLIVAR Working Group for Coupled Modeling (WGCM), ocean modelers contributing results to CMIP5, and scientists aiming to analyze CMIP5 simulations. Note about updates to this document This version of the report was prepared on February 12, 2009. The most updated version is available at the following two websites: • The CMIP5 location on the PCMDI website www-pcmdi.llnl.gov/ • The CLIVAR Working Group for Ocean Model Development website www.clivar.org/organization/wgomd/wgomd.php Addendums and clarifications to this report will also be provided at these websites. Please refer to either website prior to finalizing your ocean variables submitted to the CMIP5 repository.

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