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

DeWeaver, Eric T.

Center for Climatic Research, University of Wisconsin - Madison

关键词: Climatic Change Arctic Climate, Climate Variability, Climate Change, Climate Modeling, Atmospheric Circulation, Data Assimilation;    Greenhouse Gases;    58 Geosciences;    Atmospheric Circulation;    Arctic Climate, Climate Variability, Climate Change, Climate Modeling, Atmospheric Circulation, Data Assimilation;   

DOI  :  10.2172/972094
RP-ID  :  DOE/ER/63604
RP-ID  :  FG02-03ER63604
RP-ID  :  972094

美国|英语

来源: UNT Digital Library

【 摘 要 】

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.