State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, 46 Guanshui Road, Guiyang, Guizhou 550002, China.
CEREGE, B.P.80, 13545, Aix-en-Provence Cedex 04, France.
Sci Rep. 2014 Jun 13;4:5279. doi: 10.1038/srep05279.
A detailed and well-dated proxy record of summer rainfall variation in arid Central Asia is lacking. Here, we report a long-term, high resolution record of summer rainfall extracted from a peat bog in arid eastern-Central Asia (AECA). The record indicates a slowly but steadily increasing trend of summer rainfall in the AECA over the past 8500 years. On this long-term trend are superimposed several abrupt increases in rainfall on millennial timescales that correspond to rapid cooling events in the North Atlantic. During the last millennium, the hydrological climate pattern of the AECA underwent a major change. The rainfall in the past century has reached its highest level over the 8500-year history, highlighting the significant impact of the human-induced greenhouse effect on the hydrological climate in the AECA. Our results demonstrate that even in very dry eastern-Central Asia, the climate can become wetter under global warming.
缺乏对中亚干旱地区夏季降雨变化的详细和有日期记录的代理记录。在这里，我们报告了从中亚干旱东部（AECA）的一个泥炭沼泽中提取的长期、高分辨率的夏季降雨记录。该记录表明，在过去的 8500 年中，AECA 的夏季降雨呈缓慢但稳步上升的趋势。在此长期趋势上叠加了几个在千年时间尺度上的降雨突然增加，这与北大西洋的快速冷却事件相对应。在上个千年中，AECA 的水文气候模式发生了重大变化。过去一个世纪的降雨量达到了 8500 年历史上的最高水平，突出了人为温室效应对 AECA 水文气候的重大影响。我们的结果表明，即使在非常干燥的中亚东部，气候在全球变暖下也可能变得更加湿润。
