Dynamics of Arctic and Sub-Arctic Climate and Atmospheric Circulation: Diagnosis of Mechanisms and Biases Using Data Assimilation

• Main Author: Eric T. DeWeaver
• Language: unknown
• Published: 2010
• Subjects: 58 GEOSCIENCES; ATMOSPHERIC CIRCULATION; CLIMATES; DIAGNOSIS; GREENHOUSE GASES; SATELLITES; CLIMATIC CHANGE; Arctic; Climate change
• Online Access: http://www.osti.gov/servlets/purl/972094; https://www.osti.gov/biblio/972094; https://doi.org/10.2172/972094

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.