中全新世以来我国西部气候变化集成研究

中全新世 最近二千年 西部 气候变化 集成研究
谭明 2006-01 项目
【英文摘要】The program focuses on analysis and integration in the implementation of the project of Western China Environmental Change access to the natural records, including the last 2000-year data from stalagmites, tree rings, ice cores, lake sediment and documentary records, covering many types and wide range of records for which very different methods are used. Summary the progress since the implementation of the project are: (1) revealing "circulation effect" – the climate significance of 10-100a scale changes in the stalagmite oxygen isotopes from Chinese monsoon region; (2) to achieve the annual resolution of different materials from different regions integration and cross-examination with the simulation results; (3) revealing the differences of climate evolution in the different areas of the western region, especially the Qinghai-Tibet Plateau and the surrounding areas; (4) to prove further the fact from the 100-year scale that the Qinghai-Tibet Plateau is the Asian monsoon heat-driven force; (5) analyzing the source of water vapor at different times through the reconstruction of circulation changes as well as the evolution of sequence of regional wet and dry sequences. This program has more than ten papers published in core journals at home and abroad, contributed integrated temperature time series data, simulated temperature time-series, as well as the evolution of an integrated circulation time-series to the project. During program implementation, the team members and international counterparts, a wide range of academic exchanges and training of young talents. Finally, the program makes further recommendations to resolve the new problems identified in the implementation.
【中文摘要】本项目重点分析和集成在执行西部研究计划中获得的自然记录包括石笋、树轮、冰芯、湖泊沉积以及文献记录等最近2000年的数据,类型多,范围广,各种记录的研究方法有很大差别。总结项目执行以来的研究进展主要有:(1)发现“环流效应”—— 中国季风区石笋氧同位素10-100年尺度共同变化成分的气候意义;(2)实现不同区域不同材料的年分辨率记录集成并与模拟结果进行交叉检验;(3)揭示了西部不同区域、尤其是青藏高原与周边区域的气候演变差异;(4)进一步从100年尺度证明了青藏高原热力驱动亚洲季风的事实;(5)通过重建区域干湿变化序列和环流演变序列,分析了不同时段的水汽来源。本项目成果以十数篇文章在国内外核心刊物发表;向西部研究计划贡献了集成温度时间序列数据、模拟温度时间序列数据以及集成的环流演变时间序列数据;在项目执行期间,项目组成员与国际同行进行了广泛的学术交流,培养了青年人才;最后,对项目执行过程中发现的新问题提出进一步解决的建议。