Abstract Changes in synoptic atmospheric circulation patterns are thought to play a role in establishing millennial scale climate periods during the end of the late glacial and the Holocene. In the northeastern United States, multi-proxy evidence documents fluctuations in effective moisture and temperatures for this time period, but constraining the relationship between atmospheric processes and these climate regimes is not straightforward. Because the hydrogen-isotope ratios of sedimentary terrestrial leaf waxes can reflect precipitation δD, these long-chain hydrocarbon compounds are an excellent tool to investigate moisture sourcing. Here we present lake sediment and leaf wax carbon- and hydrogen-isotope records that span the past ∼14.0 thousand years from Heart Lake and Moose Pond in the Adirondack Mountains (ADK), New York. High initial lake productivity after basin inception is reflected in low C:N ratios (

中文翻译：

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从两个纽约湖的叶蜡氢同位素比中记录的全新世春季降水的稳定来源

摘要 天气性大气环流模式的变化被认为在晚冰期末期和全新世末期的千年尺度气候期的建立中发挥了作用。在美国东北部，多代理证据记录了这一时期有效湿度和温度的波动，但限制大气过程与这些气候状况之间的关系并不简单。由于沉积陆地叶蜡的氢同位素比可以反映降水 δD，因此这些长链烃化合物是研究水分来源的绝佳工具。在这里，我们展示了纽约阿迪朗达克山脉 (ADK) 的心湖和穆斯池塘过去大约 14000 年的湖泊沉积物和叶蜡碳和氢同位素记录。