Relationships between geomagnetic field (GF) variations, paleoclimates, and Milankovitch cycles have increasingly attracted the attention of researchers mainly because of the assumption that GF may have acted as a climate forcing, suggesting that GF variations and orbital forcing may be linked in a complex synergistic way, especially, during interglacials and interstadials. We first performed an exhaustive analysis of the relationship between GF, a paleotemperature proxy, astroclimatic parameters, and the summer solstice mean daily insolation at 65 N over the last 500 kyr. We evaluated the relationship between the variables at the orbital scale, using wavelets, cross wavelets, and multiple cross wavelets. Our novel approach to the subject is the use of a new multiple cross wavelet algorithm, which allowed us to simultaneously analyze several data series and determine the relative phases between the signals. We confirm that the eccentricity modulates the GF behavior, and that the precession could have been related to some short-term GF variations. Both orbital parameters seem to be precursors of GF changes. Also, it is especially interesting to investigate the role of the GF reversion events because they could have acted as an indirect climate forcing, and we focused on the relationship among forcings during Marine Isotope Stage (MIS) 5. During this period, two GF reversions (Blake and post-Blake) could have been associated with relative climate cooling. The consequent lack or weakening of shielding associated with GF events and downward insolation, both influenced by orbital forcing, could finally have promoted a relative global climate cooling during MIS 5.

地磁场（GF）变化、古气候和米兰科维奇旋回之间的关系越来越引起研究人员的关注，主要是因为假设 GF 可能起到了气候强迫的作用，这表明 GF 变化和轨道强迫可能以复杂的协同作用联系在一起。方式，特别是在间冰期和间冰期。我们首先对过去 500 kyr 中 GF、古温度代理、天文气候参数和夏至日平均 65 N 日照度之间的关系进行了详尽的分析。我们使用小波、交叉小波和多个交叉小波在轨道尺度上评估了变量之间的关系。我们对该主题的新颖方法是使用新的多重交叉小波算法，这使我们能够同时分析多个数据系列并确定信号之间的相对相位。我们确认偏心率调节 GF 行为，并且进动可能与一些短期 GF 变化有关。两个轨道参数似乎都是 GF 变化的前兆。此外，研究 GF 反转事件的作用特别有趣，因为它们可能充当间接气候强迫，我们专注于海洋同位素阶段 (MIS) 5 期间强迫之间的关系。在此期间，两次 GF 反转（布莱克和后布莱克）可能与相对气候变冷有关。与 GF 事件和向下日照相关的屏蔽随之缺乏或减弱，两者都受到轨道强迫的影响，