A robust understanding of the sub-seasonal cold season (November–March) precipitation variability over the High Mountains of Asia (HMA) is lacking. Here, we identify dynamic and thermodynamic pathways through which natural modes of climate variability establish their teleconnections over the HMA. First, we identify evaporative sources that contribute to the cold season precipitation over the HMA and surrounding areas. The predominant moisture contribution comes from the mid-latitude regions, including the Mediterranean/Caspian Seas and Mediterranean land. Second, we establish that several tropical and extratropical forcings display a sub-seasonally fluctuating influence on precipitation distribution over the region during the cold season. Many of them varyingly interact, so their impacts cannot be explained independently or at seasonal timescales. Lastly, a single set of evaporative sources is not identifiable as the key determinant in propagating a remote teleconnection because the sources of moisture anomalies depend on the pattern of sub-seasonally varying dynamical forcing in the atmosphere.

缺乏对亚洲高山 (HMA) 的次季节性寒冷季节（11 月至 3 月）降水变化的深入了解。在这里，我们确定了气候变率的自然模式通过其在 HMA 上建立遥相关的动态和热力学途径。首先，我们确定了导致 HMA 及周边地区冷季降水的蒸发源。主要的水分贡献来自中纬度地区，包括地中海/里海和地中海陆地。其次，我们确定几个热带和温带强迫在寒冷季节对该地区的降水分布表现出亚季节性波动的影响。它们中的许多相互作用不同，因此它们的影响无法独立或按季节时间尺度解释。