We reconstructed the Chandler Wobble (CW) from 1962 to 2022 by combining the Eigen-oscillator excited by geophysical fluids of atmospheric and oceanic angular momentums (AAM and OAM). The mass and motion terms for the AAM are further divided with respect to the land and ocean domains. Particular attention is placed on the time span from 2012 to 2022 in relation to the observable reduction in the amplitude of the CW. Our research indicates that the main contributor to the CW induced by AAM is the mass term (i.e., the pressure variations over land). Moreover, the phase of the AAM-induced CW remains relatively stable during the interval of 1962–2022. In contrast, the phase of the OAM-induced CW exhibits a periodic variation with a cycle of approximately 20 years. This cyclic variation would modulate the overall amplitude of the CW. The noticeable amplitude deduction over the past ten years can be attributed to the evolution of the CW driven by AAM and OAM, toward a state of cancellation. These findings further reveal that the variation in the phase difference between the CW forced by AAM and OAM, may be indicative of changes in the interaction between the solid Earth, atmosphere, and ocean.

我们通过结合大气和海洋角动量（AAM 和 OAM）地球物理流体激发的本征振子重建了 1962 年至 2022 年的钱德勒摆动（CW）。 AAM 的质量和运动项根据陆地和海洋领域进一步划分。特别关注 2012 年至 2022 年期间与可观察到的 CW 振幅减少有关的情况。我们的研究表明，AAM 引起的 CW 的主要贡献者是质量项（即陆地上的压力变化）。此外，AAM 诱发的连续波相位在 1962 年至 2022 年期间保持相对稳定。相比之下，OAM 引起的 CW 的相位表现出周期性变化，周期约为 20 年。这种循环变化将调制 CW 的整体幅度。过去十年中幅度的显着下降可以归因于AAM和OAM驱动的CW向取消状态的演变。这些发现进一步表明，AAM 和 OAM 强制的 CW 之间的相位差的变化可能表明固体地球、大气和海洋之间相互作用的变化。