Open AccessDynamics of Arctic and Sub-Arctic Climate and Atmospheric Circulation: Diagnosis of Mechanisms and Biases Using Data Assimilation
Author(s) -
Eric T DeWeaver
Publication year - 2010
Language(s) - English
Resource type - Reports
DOI - 10.2172/972094
Subject(s) - climatology , environmental science , data assimilation , climate change , climate model , transient climate simulation , arctic , general circulation model , greenhouse gas , climate commitment , credibility , meteorology , global warming , effects of global warming , geography , oceanography , geology , political science , law
The overall goal of work performed under this grant is to enhance understanding of simulations of present-day climate and greenhouse gas-induced climate change. The examination of present-day climate also includes diagnostic intercomparison of model simulations and observed mean climate and climate variability using reanalysis and satellite datasets. Enhanced understanding is desirable 1) as a prerequisite for improving simulations; 2) for assessing the credibility of model simulations and their usefulness as tools for decision support; and 3) as a means to identify robust behaviors which commonly occur over a wide range of models, and may yield insights regarding the dominant physical mechanisms which determine mean climate and produce climate change. A further objective is to investigate the use of data assimilation as a means for examining and correcting model biases. Our primary focus is on the Arctic, but the scope of the work was expanded to include the global climate system