威海、烟台雪下到“冒烟”，咋回事

Core Viewpoint - The recent heavy snowfall in Weihai and Yantai, known for their frequent snowfalls, is primarily attributed to a phenomenon called "cold flow snow," which accounts for over 80% of their total snowfall days [2]. Group 1: Cold Flow Snow Characteristics - Cold flow snow, also referred to as "cold flow precipitation," occurs when warm, moist air from the sea rises and cools, leading to snow formation as cold air moves southward [2]. - The geographical location of Weihai, situated at the eastern end of the Shandong Peninsula and surrounded by the sea, makes it particularly prone to cold flow snow [2]. - The snowfall in these cities is significantly higher compared to other regions in Shandong, with a notable example being the precipitation of 80.3 millimeters recorded in Yantai's Zhifu District from late 2005 to early 2006 [2]. Group 2: Factors Contributing to Cold Flow Snow - The large heat capacity of the ocean results in a more stable winter sea temperature compared to land, which enhances the conditions for air convection and cloud formation near the sea surface [2]. - The topography of the northern coastal hills and mountains also plays a role in elevating warm, moist air to condensation heights, further amplifying the occurrence of cold flow snow [2].