Meteorological characteristics of advection fog

1. The daily change is not obvious, it can appear at any time of the day, and it can be used all day long if the conditions are met. The annual changes are obvious (more in spring and summer, less in autumn and winter) and seasonal changes in sea-land temperature difference and warm and cold ocean currents;

2. Maritime advection fog lasts for a long time, sometimes lasting several days. On land, it is often advection radiation fog, that is, warm and humid advection first and then radiation cooling;

3. The vertical thickness of advection fog can range from tens of meters to two thousand meters, and the horizontal range can reach hundreds of kilometers or more , the intensity of advection fog is also greater than that of radiation fog;

4. Advection fog is often accompanied by weather phenomena such as stratus clouds, broken rain clouds and drizzle, and the weather is generally relatively stable.