Global and Hemisphere Implications of Anthropogenically-forced Arctic Atmospheric Circulation

研究人员将研究人为引起的大气二氧化碳增加对北极和全球气候造成的气候变暖的潜在影响。北极涛动（AO）的长期变率可能受到温室气体浓度增加的影响，因此，对于了解未来气候对气体持续增加的响应非常重要。来自温暖、无冰地质时期的数据将被用作气候系统模型的代理，以研究由类似于北极正在发生的变暖所导致的未来更温暖、无冰的北极可能是什么样子。AO在北极气候中的作用和北极气候对全球气候的反馈是一个新的研究领域，对理解全球变暖的机制具有重要意义。由于北极已经变暖了十多年，环境反应已经很明显，这项研究对全球变暖影响的研究做出了及时的贡献。

The researchers will examine the potential effect of climate warming from anthropogenically induced increases of atmospheric carbon dioxide on both Arctic and global climate. The long-term variability of the Arctic Oscillation (AO) may be influenced by increased greenhouse gas concentration, and therefore, is important for understanding future climate response to the continued increase of gases. Data from a warm, ice-free geologic period will be used as a proxy in a climate system model to examine what a future warmer, ice-free Arctic resulting from a warming similar to the one underway in the Arctic might be like. The role of the AO in arctic climate and the feedback of arctic climate on global climate is a new area of research that has important implications for understanding mechanisms for global warming. Since the Arctic has been warming for over a decade and the environmental response is already obvious, the research is a timely contribution to studies of the impacts from global warming.