DOI: 10.1016/j.palaeo.2012.07.017
论文题名: Modeling East Asian climate and impacts of atmospheric CO2 concentration during the Late Cretaceous (66Ma)
作者: Chen J. ; Zhao P. ; Wang C. ; Huang Y. ; Cao K.
刊名: Palaeogeography, Palaeoclimatology, Palaeoecology
ISSN: 0031-0182
出版年: 2013
卷: 385 起始页码: 190
结束页码: 201
语种: 英语
英文关键词: East Asian climate modeling
; Greenhouse effects
; Late Cretaceous
英文摘要: Utilizing the Community Climate System Model version 2 from the National Center for Atmospheric Research (NCAR) and the reconstructed paleogeographic data, we simulate East Asian climate in the Late Cretaceous (66Ma) and investigate the impacts of atmospheric CO2 concentration on climate. The simulations show that the large-scale pressure systems and prevailing wind directions showed a remarkable seasonal variation over East Asia at 66Ma, which indicates a monsoon feature over East Asia. The East Asian winter and summer monsoons showed a synchronous variation, that is, a strong (weak) winter monsoon accompanied a strong summer (weak) monsoon. At 66Ma, there was more precipitation over the eastern coasts of Asia and less precipitation in the mid-latitudes of the inland areas, but there was no meiyu rainy belt in the subtropics of the East Asian land like the present climate. Moreover, the simulated Cretaceous climate over East Asia was warmer relative to the present day. Annual mean surface air temperature was higher over Asia at that time and close to the estimation from the geological evidence. In the Late Cretaceous, when atmospheric CO2 concentration is reduced, the East Asia climate has a significant change, with weaker winter and summer monsoons over East Asia. Annual mean surface air temperature and annual total precipitation reduce in most of land and ocean. Negative difference of surface water budget appeared mainly in the eastern part of East Asia, indicating a drier soil surface, while positive differences appeared in the mid-latitudes of central-western Asia, indicating a wetter soil surface. © 2012 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/69698
Appears in Collections: 过去全球变化的重建
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作者单位: Chinese Academy of Meteorological Sciences, Beijing 100081, China; National Meteorological Information Center, China Meteorological Administration, Beijing 100081, China; Research Center f or Tibetan Plateau Geology, China University of Geosciences (Beijing), Beijing 100083, China; Key Laboratory of Marine Hydrocarbon Resources and Environment Geology, Qingdao Institute of Marine Geology, Qingdao 266071, China
Recommended Citation:
Chen J.,Zhao P.,Wang C.,et al. Modeling East Asian climate and impacts of atmospheric CO2 concentration during the Late Cretaceous (66Ma)[J]. Palaeogeography, Palaeoclimatology, Palaeoecology,2013-01-01,385