The danger of a major flood is coming
I think it’s been about 10 years. What made me think that the summer heat had reached an abnormal level? Now I am not surprised at all when I hear that the temperature is 36 or 37, and on the contrary, when I am a child, I thought that 30 was hot enough. The typhoons that hit the Japan archipelago in autumn are getting bigger every year, and the snow that falls in the northern part of the country in winter and the rain during the rainy season have begun to record extraordinary precipitation, causing enormous damage to various places, based on experience that “it was okay until now.”
It confronts us that judgment does not work. I feel that the climate has become violent.
In addition to natural phenomena such as volcanic eruptions and changes in solar activity, we often hear that the rise in temperature is largely caused by the accumulation of heat on the earth’s surface without releasing heat due to the absorption of infrared rays, which are the heat source of carbon dioxide, which have been discussed in recent years.
What about “rain”? In the past few years, we have come to hear a lot about “linear precipitation zones”. It is a large procession of cumulonimbus clouds, which causes torrential rain, but how does it occur?
Cumulonimbus clouds are the parent of incoming clouds. During the summer day, the air heated near the surface becomes lighter, and the air pressure that rises higher decreases, and the cooled water vapor becomes saturated and rain clouds are formed.
This is the entrance cloud. I get off in the evening. Since the time is short, there is not much rainfall. The updraft is intense, and when the incoming clouds grow steadily, they become cumulonimbus clouds.
However, in any case, it will quickly disappear on its own.
However, these cumulonimbus clouds may occur continuously. Around April 67, the rainy season front is stagnant in the Japan archipelago. A front is the boundary between air with different characteristics, such as cold and warm air. At that border, light warm air rides up on top of heavy cold air and creates updrafts, creating rain clouds.
It will be easier. Towards this rainy season front, warm blowing in from the southwest
Moist air collides, and depending on pressure distribution conditions, updrafts continue to flow in the same place for a long time, creating cumulonimbus clouds one after another.
The question is the amount of water vapor. I heard on the news that the sea surface temperature near Japan Pacific Ocean side exceeds 30, but the point is that we have crossed the sea surface where the temperature is so high.
Winds contain large amounts of water vapor, and the greater the amount of water vapor, the more rapidly cumulonimbus clouds grow, forming a “linear precipitation band” that causes torrential rain in rows. I don’t think global warming is the whole cause, but water vapor also emits infrared rays more than carbon dioxide.
Absorption. When carbon dioxide increases and the temperature rises, and seawater evaporates into water vapor, not only does precipitation increase, but the temperature also rises further, creating a vicious cycle.
The rise in sea surface temperature also contributes to the enormous typhoon. In addition, not only the temperature but also the water level continues to rise gradually. It is caused by seawater expansion due to rising temperatures and melting of continental ice sheets.
Previously, scientific journals
According to a paper published in Nature Communications, when AI (artificial intelligence) was used to correct the elevation data of the world’s land masses, flooding caused by storm surges from typhoons and rising sea levels
It turns out that the prediction of damage has been underestimated so far. He says that Asian countries will be most affected by this. We must be aware that there is a terrifying picture of the future in which much of the coastal area may be submerged in the future.
By Admin|2023-08-18|2023,News Release|