Key Laboratory of Land Surface Pattern and Simulation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, 100101, China.
National Climate Centre, China Meteorological Administration, Beijing, 100081, China.
Int J Biometeorol. 2017 Nov;61(11):2021-2032. doi: 10.1007/s00484-017-1395-0. Epub 2017 Jul 7.
This study presents a 304-year mean July-October maximum temperature reconstruction for the southeastern Tibetan Plateau based on both tree-ring width and maximum latewood density data. The reconstruction explained 58% of the variance in July-October maximum temperature during the calibration period (1958-2005). On the decadal scale, we identified two prominent cold periods during AD 1801-1833 and 1961-2003 and two prominent warm periods during AD 1730-1800 and 1928-1960, which are consistent with other reconstructions from the nearby region. Based on the reconstructed temperature series and volcanic eruption chronology, we found that most extreme cold years were in good agreement with major volcanic eruptions, such as 1816 after the Tambora eruption in 1815. Also, clusters of volcanic eruptions probably made the 1810s the coldest decade in the past 300 years. Our results indicated that fingerprints of major volcanic eruptions can be found in the reconstructed temperature records, while the responses of regional climate to these eruption events varied in space and time in the southeastern Tibetan Plateau.
本研究基于树木年轮宽度和晚材密度数据，重建了青藏高原东南部过去 304 年 7-10 月的最高温度。在验证期（1958-2005 年），重建结果解释了 7-10 月最高温度方差的 58%。在年代际尺度上，我们确定了公元 1801-1833 年和 1961-2003 年两个明显的寒冷期，以及公元 1730-1800 年和 1928-1960 年两个明显的温暖期，与附近地区的其他重建结果一致。基于重建的温度序列和火山爆发年表，我们发现大多数极端寒冷年份与重大火山爆发一致，如 1815 年坦博拉火山爆发后的 1816 年。此外，火山爆发群可能使 19 世纪 10 年代成为过去 300 年来最冷的十年。我们的研究结果表明，主要火山爆发的痕迹可以在重建的温度记录中找到，而区域气候对这些爆发事件的响应在青藏高原东南部表现出时空差异。
