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

Eric T. DeWeaver

关键词: ATMOSPHERIC CIRCULATION;    CLIMATES;    DIAGNOSIS;    GREENHOUSE GASES;    SATELLITES;    CLIMATIC CHANGE Arctic climate;    climate variability;    climate change;    climate modeling;    atmospheric circulation;    data assimilation;   

DOI  :  10.2172/972094
RP-ID  :  DOE/ER/63604
PID  :  OSTI ID: 972094
Others  :  Other: MSN100494/144-LW08
Others  :  TRN: US201008%%468

学科分类：地球科学(综合)

美国|英语

来源: SciTech Connect

【 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.