The Korean Peninsula is once again experiencing a 'double heat dome.' Two high-pressure systems, one in the upper atmosphere and one in the lower atmosphere, are causing extreme heat and tropical nights across the country.
According to the Korea Meteorological Administration, the primary cause of this heat wave is the simultaneous dominance of the 'double high-pressure system' in both the upper and lower atmosphere.
At approximately 10 kilometers above sea level, the hot and dry Tibetan high pressure has expanded its influence over the Korean Peninsula. Meanwhile, the warm and humid North Pacific high pressure is drawing moisture from the south, enveloping the peninsula.
The two massive high-pressure systems are compressing the heat generated at the surface, intensifying the heat dome effect, which traps heat beneath them like a thick blanket.
Within the high-pressure area, strong subsiding air currents are occurring. As the air descends, it compresses, causing temperatures to rise further, while cloud formation is suppressed, allowing strong sunlight to directly heat the surface. This is why daytime temperatures remain high and do not drop significantly at night, leading to tropical nights.
A meteorological expert stated, "Once the double heat dome structure, with the Tibetan high pressure in the upper atmosphere and the North Pacific high pressure in the lower atmosphere, takes hold over the Korean Peninsula, it will be difficult for temperatures to decrease for the time being. With perceived temperatures reaching between 33 and 35 degrees Celsius, it is advisable to limit outdoor activities and take special care to prevent heat-related illnesses."
So, when can we expect relief from this oppressive double heat dome?
Meteorological experts predict that cracks in the double heat dome structure will begin to form in early September, as the Tibetan high pressure weakens and cold air from the north starts to descend.
However, during the process of the heat dome dissipating, there is a possibility of strong clashes between the cold air from the north and the warm air from the south, which could lead to heavy autumn rains or sudden showers in early September.
Afterward, typical autumn weather, characterized by lower humidity and cool breezes in the mornings and evenings, is expected to emerge in mid-September.
The Korea Meteorological Administration cautioned, "Until the transition period when the heat dome is lifted, sweltering heat and tropical nights exceeding 33 degrees Celsius may continue, so ongoing attention to health management is necessary."
* This article has been translated by AI.
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