A late Holocene subfossil Atlantic white cedar tree-ring chronology from the northeastern United States
A late Holocene subfossil Atlantic white cedar tree-ring chronology from the northeastern United States
复制标题
DOI：
10.1016/j.quascirev.2019.106104
复制
发表时间：
2020-01
影响因子：
4
通讯作者：
J. Pearl;K. Anchukaitis;J. Donnelly;C. Pearson;N. Pederson;M. L. Gaylord;A. McNichol;E. Cook;George L. Zimmermann
中科院分区：
文献类型：
--
作者：
J. Pearl;K. Anchukaitis;J. Donnelly;C. Pearson;N. Pederson;M. L. Gaylord;A. McNichol;E. Cook;George L. Zimmermann
树木年轮提供了精确的年度气候信息，但由于许多树木的寿命相对较短，其应用受到限制。为了克服这一局限性，可以通过将活树与更老的“亚化石”树联系起来，将树轮记录延长到更长的时间段，这可以提供整个全新世更长时间尺度的信息。这些较长的年表是过去气候的代用记录，为极端事件提供了精确的年代信息，并使人们深入了解仪器使用期间之前的自然气候变率范围。在人口稠密的美国东北部，很少有超过500年的树木年轮记录，也没有该地区千年长度的树木年轮年表。在这里，我们使用标准的树木年代学和放射性碳技术相结合，包括使用774 CE放射性碳远足，以产生一个绝对的日期2500年之久的树木年轮记录从生活，考古和亚化石大西洋白色雪松（Chamaestralparis thyoides）发现在美国东北部沿海地区。我们的年表表明，有可能开发多millennialChamaoparis thyoidestree环记录，以解决以前未回答的问题，全新世晚期水文气候，极端事件，温度变化在新英格兰。
Tree-rings provide precise annually dated climate information, but their application can be limited by the relatively short lifespan of many trees. To overcome this limitation, tree-ring records can be extended over longer time periods by connecting living trees with older “sub-fossil” trees, which can provide information on longer timescales throughout the Holocene. These long chronologies are proxy records of past climate, provide precise chronological information for extreme events, and give insight into the range of natural climate variability prior to the instrumental period. In the densely populated northeastern United States, few tree-ring records are longer than 500 years, and there are no millennial-length tree-ring chronologies for the region. Here, we use a combination of standard dendrochronological and radiocarbon techniques, including use of the 774 CE radiocarbon excursion, to generate an absolutely dated 2500 year-long tree ring record from living, archaeological, and subfossil Atlantic white cedar (Chamaecyparis thyoides) found in the coastal northeastern United States. Our chronology demonstrates the potential to develop multi-millennialChamaecyparis thyoidestree-ring records to address previously unanswered questions regarding late Holocene hydroclimate, extreme events, and temperature variability in New England.