Holocene temperature proxy records are commonly used in quantitative synthesis and model‐data comparisons. However, comparing correlations between time series from records collected in proximity to one another with the expected correlations based on climate model simulations indicates either regional or noisy climate signals in Holocene temperature proxy records. In this study, we evaluate the consistency of spatial correlations present in Holocene proxy records with those found in data from the Last Glacial Maximum (LGM). Specifically, we predict correlations expected in LGM proxy records if the only difference to Holocene correlations would be due to more time uncertainty and more climate variability in the LGM. We compare this simple prediction to the actual correlation structure in the LGM proxy records. We found that time series data of ice‐core stable isotope records and planktonic foraminifera Mg/Ca ratios were consistent between the Holocene and LGM periods, while time series of Uk'37 proxy records were not as we found no correlation between nearby LGM records. Our results support the finding of highly regional or noisy marine proxy records in the compilation analysed here and suggest the need for further studies on the role of climate proxies and the processes of climate signal recording and preservation.

中文翻译：

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在温度代理记录中测试全新世和最后冰川最大空间相关性的一致性

全新世温度代用记录通常用于定量合成和模型数据比较。但是，将彼此接近收集的记录的时间序列之间的相关性与基于气候模型模拟的预期相关性进行比较，表明全新世温度代用记录中存在区域性或嘈杂的气候信号。在这项研究中，我们评估了全新世代用记录中的空间相关性与最近一次冰川最大期（LGM）数据中存在的空间相关性的一致性。具体而言，如果与全新世相关性的唯一差异是由于LGM中更多的时间不确定性和更多的气候变异性，我们可以预测LGM代理记录中预期的相关性。我们将这个简单的预测与LGM代理记录中的实际相关结构进行比较。我们发现冰芯稳定同位素记录和浮游有孔虫的Mg / Ca比值的时间序列数据在全新世和LGM时期之间是一致的，而Uk'37代理记录的时间序列却不一致，因为我们发现附近的LGM记录之间没有相关性。我们的结果支持在此处分析的汇编中找到高度区域性或嘈杂的海洋代理记录，并建议需要进一步研究气候代理的作用以及气候信号记录和保存的过程。