When was the first abnormal meteorological phenomenon in North Korea?

The first abnormal meteorological phenomenon occurred in North Korea from the early morning of February 7 to the morning of February 9, 202 1 65438.

Specific phenomena include: the surface temperature drops to MINUS 2-3 degrees Celsius, while the atmospheric temperature of 1000 hectopascals rises to above zero 2-3 degrees Celsius. The weather phenomenon in North Korea this time is the continuous occurrence of atmospheric inversion for more than 48 hours. The humidity of superimposed air increases, and a large-scale and long-term dense fog phenomenon appears.

The reason of this heavy fog in North Korea

Because air can't convect, moisture accumulates on the surface and forms fog. According to the report of the Korean Central News Agency, the surface temperature of this unusual atmospheric phenomenon is about three degrees below zero, but the temperature at an altitude of 700 meters has reached three degrees above zero.

Large-scale atmospheric inversion is usually rare, so it is called a special weather phenomenon, which is only encountered once in several decades in North Korea. Once the atmospheric inversion occurs, it may cause serious air pollution events.