Indicators of Climate Change in the Middle Atmosphere using a New Climate Feedback-Response Analysis Method
Friday, 18 December 2015
Poster Hall (Moscone South)
We apply the recently developed middle atmosphere climate feedback-response analysis method (MCFRAM) to identify the distinctive characteristics of climate change as reflected in the middle atmosphere contributed from the external forcing and different feedback processes associated with changes in greenhouse gases and solar variability. The temperature responses to variations of CO2, O3, and solar flux have distinctly different spatial structures that can be systematically categorized by the eigenmodes of the generalized damping matrix derived from MCFRAM. The seasonality of the middle atmosphere climate sensitivity is also presented using MCFRAM diagnosis based on the output fields of various ensemble runs of the Goddard Earth Observing System chemistry-climate model (GEOSCCM).