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The mission of the Climate Analysis Section is to increase understanding of the atmosphere and its interaction with the oceans, cryosphere and land surface, through empirical studies, diagnostic analyses and modeling.
Research foci include the global water and energy cycles, atmospheric general circulation and modes of variability, El Niño–Southern Oscillation, polar climate, interannual-to-decadal variability and predictability, and anthropogenic climate change. Community projects include the Climate Data Guide, Climate Variability Diagnostics Package and CESM Large Ensemble. CAS is closely aligned with the CESM Climate Variability and Change Working Group.
The Climate Data Guide is an interactive website for researchers and students to identify and make effective use of climate data by providing expert-user guidance and commentary on dataset strengths, limitations and applicability to model evaluation.
The Climate Variability Diagnostics Package documents the major modes of climate variability (for example, ENSO, Pacific Decadal Oscillation, Atlantic Multi-decadal Oscillation, and numerous atmospheric teleconnection patterns) in models (CESM and CMIP) and observations.
The CESM Large Ensemble Project is a publically available set of simulations useful for studying internal climate variability and climate change. It includes a 38-member ensemble covering the period 1920-2100, and 1000-year long control simulations of the atmosphere, slab-ocean, and full-coupled models.