A 4500-Year Tree-Ring Record of Extreme Climatic Events on the Yamal Peninsula

Based on the analysis of frequency anomalous anatomical structures in wood Siberian larch and spruce (frost rings, light false as well missing narrow rings), we reconstructed a timeline climatic extremes (summer frosts, sharp multiday decreases air temperature during growing season, low average summer temperatures) Yamal (Western Siberia) over last 4500 years. In total, 229 years were determined to have experienced extreme events. The most significant recorded 2053, 1935, 1647, 1626, 1553, 1538, 1410, 1401, 982, 919, 883 BCE, 143, 404, 543, 640, 1209, 1440, 1453, 1466, 1481, 1601 1818 CE. These dates with extrema observed corrobarated tree ring data from other regions revealed several coincidences. That is, these years, appeared been global rather than regional scale. Moreover, coincided traces large volcanic eruptions found ice cores Greenland Antarctica, dated approximately same Therefore, cause cooling scale, cases, can be linked eruptions.