NOAA/WDS Paleoclimatology - Touchan - Ichmoul - CDAT - ITRDB DZA018

The first large-scale network of tree-ring chronologies from the western Mediterranean (WM; 32°N–43°N, 10°W–17°E) is described and analyzed to identify the seasonal climatic signal in indices of annual ring width. Correlation and rotated empirical orthogonal function analyses are applied to 85 tree-ring series and corresponding gridded climate data to assess the climate signal embedded in the network. Chronologies range in length from 80 to 1129 years. Monthly correlations and partial correlations show overall positive associations for Pinus halepensis (PIHA) and Cedrus atlantica (CDAT) with winter (December–February) and spring (March–May) precipitation across this network. In both seasons, the precipitation correlation with PIHA is stronger, while CDAT chronologies tend to be longer. A combination of positive correlations between growth and winter–summer precipitation and negative partial correlations with growing season temperatures suggests that chronologies in at least part of the network reflect soil moisture and the integrated effects of precipitation and evapotranspiration signal. The range of climate response observed across this network reflects a combination of both species and geographic influences. Western Moroccan chronologies have the strongest association with the North Atlantic Oscillation.

本存档古气候学研究数据集可从美国国家海洋和大气管理局（NOAA）国家环境信息中心（NCEI）获取，该机构隶属于古气候学世界数据服务（WDS）。关联的NCEI研究类型为树轮（Tree Ring）。该数据集包含树轮参数，地理覆盖范围为北非阿尔及利亚地区。时间覆盖范围为距今549年至-62年（BP）。有关参数与研究地点的详细信息，请参阅元数据（metadata）。使用该数据集时，请引用本研究。