Solar Modulation of Terrestrial 14C Production During the Little Ice Age and Medieval Warm Epoch (Solar Wind, Flares and Irradiance)

小冰期是太阳活动较弱的时期，我们将其与太阳活动较弱的中世纪暖期的太阳活动-放射性碳-气候关系进行比较。此外，将对苏联的Kocharov数据进行评价，该数据表明，在蒙德极小期，树木年轮的C14含量波动幅度为20%，周期为18年（而不是11年）。还将进行计算机模拟，以测试C14周期在10千年记录中的平稳性，检查尚未研究但出现在功率谱中的周期，并确定来自格陵兰冰芯的C14记录和δ O18信号之间的关系是否在南极冰芯的δ O18记录中也很明显。这项工作将包括高精度的C14分析，使用液体闪烁光谱法对一年的树木年轮样本进行分析。＊＊＊

The solar activity-radiocarbon-climate relationship of the Little Ice Age, a period of low solar activity, will be compared with that of the Medieval Warm Epoch, a period of low solar activity. Additionally, USSR data of Kocharov, which suggested a 20% fluctuation in C14 content of tree rings with an 18 year period (and no 11 year cycle) during the Maunder minimum, will be evaluated. Computer modelling will also be performed to test the stationality of the C14 periodicity over the 10 millennium record, to examine periods not yet studied but which appear in the power spectra, and to determine if the relationships between the C14 record and delta O18 signals from the Greenland ice cores are also evident in the delta O18 record of Antarctic ice cores. The work will include high-precision C14 analysis using liquid scintillation spectrometry of single-year tree-ring samples for the time periods in question. ***