Mysterious Precipitation and Cryospheric Events Across Polar and Hyper-Arid Environments: Recurring Timing Patterns Associated with Earth–Moon Distance Variability

Extreme precipitation events in Antarctica and anomalous ice-melting episodes in Greenland are among the most unusual and least understood environmental phenomena observed in polar regions. Despite increasing scientific attention, questions remain regarding whether the timing of such events is entirely random or exhibits recurring temporal structure. This study investigates 15 documented events, including extreme precipitation episodes in Antarctica, anomalous ice-melting events in Greenland, and selected unusual moisture-related events from arid environments such as Death Valley and Cairo. Event timing was examined in relation to Earth-Moon distance variability and its temporal rate of change (dr/dt). Published meteorological records were compared with astronomical ephemerides to evaluate whether event occurrence was randomly distributed throughout the Earth-Moon cycle or concentrated near specific dynamical phases. Relative timing was calculated with respect to extrema and zero-crossings of the dr/dt series.The results indicate that all analyzed events occurred near either maxima, minima, or zero-crossings of the calculated dr/dt sequence. A pronounced concentration was observed approximately three days prior to nearby dr/dt maxima, with secondary clustering near zero-crossings. Similar timing relationships occurred across geographically and climatologically distinct environments. These observations do not establish a causal relationship between Earth-Moon variability and extreme environmental events. However, the recurrence of comparable timing structures across multiple regions suggests that the observed phase relationships are unlikely to be entirely random and may warrant further investigation.The findings are presented as observational evidence of recurring timing patterns and may contribute to future studies of Earth-Moon system variability, environmental synchronization, and the timing of rare extreme events.