title: Increasing summer rainfall in arid eastern-Central Asia over the past 8500 years.
abstract: 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.
authors.affiliation: State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, 46 Guanshui Road, Guiyang, Guizhou 550002, China.
authors.forename: Bing
authors.initials: B
authors.lastname: Hong
authors.affiliation: CEREGE, B.P.80, 13545, Aix-en-Provence Cedex 04, France.
authors.forename: Françoise
authors.initials: F
authors.lastname: Gasse
authors.affiliation: Center for Environmental measurement and analysis, National Institute for Environmental Studies, Onogawa 16-2, Tsukuba, Ibaraki, 305-0053 Japan.
authors.forename: Masao
authors.initials: M
authors.lastname: Uchida
authors.affiliation: State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, 46 Guanshui Road, Guiyang, Guizhou 550002, China.
authors.forename: Yetang
authors.initials: Y
authors.lastname: Hong
authors.affiliation: Institute of Peatmire, Northeast Normal University, Changchun, Jilin 130024, China.
authors.forename: Xuetian
authors.initials: X
authors.lastname: Leng
authors.affiliation: Center for Environmental measurement and analysis, National Institute for Environmental Studies, Onogawa 16-2, Tsukuba, Ibaraki, 305-0053 Japan.
authors.forename: Yasuyuki
authors.initials: Y
authors.lastname: Shibata
authors.affiliation: State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, 46 Guanshui Road, Guiyang, Guizhou 550002, China.
authors.forename: Ning
authors.initials: N
authors.lastname: An
authors.affiliation: State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, 46 Guanshui Road, Guiyang, Guizhou 550002, China.
authors.forename: Yongxuan
authors.initials: Y
authors.lastname: Zhu
authors.affiliation: State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, 46 Guanshui Road, Guiyang, Guizhou 550002, China.
authors.forename: Yu
authors.initials: Y
authors.lastname: Wang