jääkertymää

Jääkertymä refers to the accumulation of ice on surfaces. This phenomenon is common in cold climates and can occur on various objects, including buildings, vehicles, trees, and infrastructure like power lines and bridges. The formation of ice can be attributed to several meteorological conditions, most notably freezing rain, where supercooled raindrops freeze upon contact with a surface that is at or below freezing point. Snowfall can also contribute to ice accumulation, especially when temperatures rise above freezing and then drop again, causing melting and subsequent refreezing. Fog and mist can also lead to ice accretion, particularly rime ice, which forms when water droplets in fog freeze rapidly onto a surface.

The consequences of ice accumulation can range from minor inconveniences to significant hazards. On buildings, ice dams can form at the eaves, preventing proper drainage of meltwater and potentially causing water damage to roofs and walls. On roads and sidewalks, ice creates slippery surfaces, increasing the risk of slips, falls, and traffic accidents. For vehicles, excessive ice buildup can impair visibility for drivers, weigh down vehicle parts, and make it difficult to open doors. In the context of transportation and utilities, ice accumulation on power lines can lead to their sagging or breaking due to the added weight, causing widespread power outages. Similarly, ice on aircraft surfaces can disrupt airflow, affecting lift and control, and necessitating de-icing procedures before flight. Managing and mitigating the effects of jääkertymä is a crucial aspect of winter maintenance and safety in affected regions.