Interdisciplinary studies of solar activity and climate change

• Published in: Atmospheric and oceanic science letters = Daqi-he-haiyang-kexue-kuaibao 2017-07, Vol.10 (4), p.325-328
• Main Authors: XIAO, Zi-Niu, LI, De-Lin, ZHOU, Li-Min, ZHAO, Liang, HUO, Wen-Juan
• Format: Article
• Language: English
• Subjects: Climate change; Solar activity; 太阳活动; 气候变化; 科研
• ISSN: 1674-2834; 2376-6123
• DOI: 10.1080/16742834.2017.1321951

1. Introduction The solar flux is considered the fundamental energy source of earth＇s climate system, and the earth＇s motion greatly influences climate change over long time scales （Imbrie and Imbrie 1980; Ruddiman 2001）. Modern global climate change is one of the core issues in research on climate change. The degree to which astronomy and earth motion factors, which are characterized by quite weak and slow var- iations, contribute to climate change remains unclear （Beer 2006; de Jager 2008;Wang et al. 2010）. Notably, in recent dec- ades, some studies have noted that the nonlinear process in a climate system could amplify tiny variations in astronomy and earth motion factors （Lean and Rind 2001; Gray et al. 2010）. For example, the principle＇bottom-up＇mechanism of solar effects on the Pacific climate system could be assisted by nonlinear and positive air-sea feedback in the cloud-free area of the subtropical Pacific and tropical precipitation zone （Meehl et al. 2008, 2009）. In the＇top-down＇influence of solar UV irradiance that propagates from the stratosphere to the troposphere, the small initial variation of solar signal could be amplified via the wave-mean flow interaction （Kodera and Kuroda 2002; Matthes et al. 2006; Kodera et al. 2016）. Therefore, we should not neglect the effects of these fac- tors on global climate change. Indeed, astronomy and earth motion factors present intriguing and cutting-edge ques- tions to better understand climate change.