Establishment of 1000-year long Kiso hinoki tree-ring chronology and the reconstruction of the past climate for Central Japan

我们调查了日本中部一项树种气候研究的结果，这项研究使用的是日本柏树活树的年轮宽度数据。2-4月的温度已经重建了公元1719年至1961年期间。这次重建确定了小冰期晚期的五次降温事件，并与其他气候指标进行了验证。与之前从日本和中国的文献记录中估计的寒冷时期有合理的一致。对于韩国的树状气候重建也发现了一个很好的一致性，这表明西太平洋边缘冬季风的年度活动在19世纪持续的时间比现在更长。持续不断的饥荒和异常气候现象的记录支持了18世纪80年代、19世纪10年代和19世纪30年代寒冷时期的重建。这表明，Hinoki年代学有足够的潜力重建过去的气候变异性。

We investigated the results of a dendroclimatic study in Central Japan using ring width data from living trees of Hinoki cypress. February--April temperatures have been reconstructed for the period AD 1719--1961. This reconstruction, with which five cooling events were determined for the late Little Ice Age, was validated against other climate proxies. There is a reasonable agreement with cold periods previously estimated from documentary records in Japan and China. A notably good agreement is also found for a dendroclimatic reconstruction for Korea, suggesting that the annual activity of the winter monsoon in the western Pacific Rim persisted longer in the 19^<th> century than at present. Records of constant famines and unusual climatic phenomena support the reconstruction of the cold periods in the 1780s, 1810s and 1830s. It is thus revealed that the Hinoki chronology has enough potential to reconstruct the climatic variability further into the past.