【摘 要】
：
在西秦岭及其周边地区的哇坝沟、安子沟、尖尼沟、达拉沟、阿夏沟选定7个采样点,采集300余条树轮样芯,通过交叉定年,逐条去趋势,建立了7个样点的标准化树轮宽度年表,同时
【机 构】
：
中国气象局气象干部培训学院100081;兰州大学大气科学学院730000兰州大学资源环境学院730000兰州大学大气科学学院730000中国科学院西双版纳热带植物园666303
论文部分内容阅读
在西秦岭及其周边地区的哇坝沟、安子沟、尖尼沟、达拉沟、阿夏沟选定7个采样点,采集300余条树轮样芯,通过交叉定年,逐条去趋势,建立了7个样点的标准化树轮宽度年表,同时共享了西秦岭及周边地区已公开发表的66个代用记录(包括树轮、石笋、冰芯和历史文献等不同类型的代用记录).利用改进的点对点回归模型(Point-by-Point Regression,PPR),同化不同类型的代用记录,结合CRUTEM3v、CRUTS3.1和12个气象站点的平均值等三种器测数据进行重建,最终得到了较为稳定的西秦岭及周边地区过去500年(AD 1400-1995)十年分辨率的年平均温度序列.
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