NOAA/WDS Paleoclimatology - Touchan - Valia Kalda - PINI - ITRDB GRC027

The first large-scale network of 79 tree-ring chronologies in the Eastern Mediterranean and Near East (EMNE; 33°N–42°N, 21°E–43°E) is described and analyzed to identify the seasonal climatic signal in indices of annual ring width. Correlation analysis and cluster analysis are applied to tree-ring data and gridded climate data to assess the climate signal embedded in the network in preparation for climate field reconstructions and formal proxy/model intercomparison experiments. The lengths of the 79 combined chronologies range from 89 to 990 years. The monthly correlations and partial correlations reveal a pervasive positive association with May, June, and sometimes July precipitation, positive correlations with winter and spring (December through April) temperatures, and negative relationships with May through July temperature, although as expected, there are site-to-site exceptions to these general patterns. Cluster analysis suggests three groups of sites based on their association with climate. The chronologies for the EMNE have coherent seasonal precipitation and temperature signals across a fairly broad geographical domain. The predominant signal is a positive growth response to May–June precipitation. Collectively, the findings suggest that the network can be exploited to develop season-specific field reconstructions of precipitation and drought history in the EMNE.

本归档古气候学研究数据集可从美国国家海洋和大气管理局（National Oceanic and Atmospheric Administration, NOAA）下属的国家环境信息中心（National Centers for Environmental Information, NCEI）获取，该数据集纳入古气候学世界数据服务（World Data Service for Paleoclimatology, WDS）体系。该数据集对应的NCEI研究类型为树木年轮（Tree Ring）。数据集涵盖树木年轮相关参数，研究区域位于欧洲南部的希腊境内。数据覆盖的时间跨度为距今754年至距今-60年（日历年份，采用BP纪年法）。如需了解参数及研究区域的详细信息，请查阅元数据文档。使用本数据集时，请引用该研究成果。