Host: Abstracts of Annual Meeting of the Geochemical Society of Japan
Pages 31-
The multi-decadal variability of North Atlantic Oscillation (NAO), which has been reported as a driver of modern rapid climate change, pronouncedly made an impact on Europe climate in the past one century. However, lack of longer, continuous, and high-resolved plaeoclimate record hampers our understanding of the rate of the NAO phase change and its responses to the external/internal forcing especially on multi-annual to multi-decadal time scales. We present a multi-annually resolved precipitation record from the northern Mediterranean region over the past 6,500 years. This record and our simulations indicate insolation-induced millennial non-stationary behaviors of the NAO. The revealed irregularly-spaced hydroclimatic fluctuations with multidecadal-to-multicentennial wet/dry events and rapid shifts within a few decades, especially over the last 3 thousand years, are strongly coupled with tropical Pacific thermal conditions. Our results provide hints of potentially more frequent rapid climate change in Atlantic region in the future.
