Today, the 15th (Monday), marks the start of the week, and a well-developed low pressure system is moving northeast over the Sea of Okhotsk. A cold front extending from a low pressure system is passing through the Japanese archipelago, and atmospheric pressure fluctuations are expected to increase nationwide.
According to the weather forecast released by Weather News, the area from Hokkaido to Chugoku-Shikoku is predicted to be at the “warning” level. Please be careful if you are prone to weather-related symptoms such as headaches or joint pain due to changes in atmospheric pressure.
Large atmospheric pressure fluctuations due to the development of a low pressure system and the passage of a front
Today, the 15th (Monday), winds are increasing mainly in northern Japan due to the influence of a developing low pressure system in the Sea of Okhotsk. A cold front is passing through the Japanese archipelago, and after the low pressure moves northeast, the Japanese archipelago will have a strong atmospheric pressure pattern of high west and low east, so the atmospheric pressure near Japan will fluctuate significantly into tomorrow, the 16th (Tuesday).
While the low pressure is near Hokkaido, the pressure is low, but as the low pressure moves away, the pressure begins to rise.
As a result of this, symptoms of weather pain such as headaches and joint pain may occur, although it varies from person to person.
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“Caution” and “some caution” will continue from now on.
The key to weather pain is atmospheric pressure.
It is said that not only changes in the weather such as sunny or rainy weather, but also temperature, humidity, and atmospheric pressure are greatly involved.
In particular, we can feel changes in temperature and humidity on a daily basis, such as “hot/cold” or “humid/dry,” but it is difficult to feel changes in atmospheric pressure.
WeatherNews’ Weather Pain Forecast builds its forecast logic by focusing on changes in atmospheric pressure, which are difficult to feel with the skin, among the weather factors that cause weather pain.
(2) The rise and fall of atmospheric pressure that repeats at approximately fixed times twice a day (atmospheric tides)
On the other hand, there are patterns that are not clearly expressed in weather maps, but which give us a sense of weather pain. It is thought that this may be related to “atmospheric tides.”
To explain atmospheric tides in an easy-to-understand manner, they refer to periodic changes in atmospheric pressure that occur due to sunlight warming the atmosphere during the day and cooling it after sunset. This is a change in atmospheric pressure that occurs in a half-day cycle that repeats ups and downs.
This cycle may match the cycle of human biological rhythms, and although it is a 1/1000 level change compared to the atmospheric pressure fluctuation at the weather map level in (1), it is a trigger for weather pain. .
This change is generally high around 9:00 and 21:00, and low around 3:00 and 15:00. Even when there are no low pressure systems or typhoons, the range of atmospheric pressure fluctuations seems to be around several hPa.
Previous research has also shown that the risk of developing weather pain increases when the range of up-and-down fluctuations becomes larger than the average state.
(3) Periodic small pressure fluctuations
Finally, there is something called micropressure fluctuation, which is a smaller change than the atmospheric tide mentioned earlier, and compared to the atmospheric pressure fluctuation at the weather map level in (1), it corresponds to a very small change of 1/10000 level.
Examples of micropressure fluctuations occur when a cyclone approaches, when cumulonimbus clouds form, and due to the influence of airflow over mountains.
The amount of pressure change due to micro-pressure fluctuations is less than 1 hPa, and the duration is short, from a few minutes to several tens of minutes, but when it occurs, it often occurs multiple times a day.
Although the vibrations are smaller and more detailed than the above two patterns, it is thought that even such minute changes can have an impact on people who have sensors that are sensitive to weather.
Reference materials etc.
2024-01-15 00:47:00
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