On October 12, 1979, the most powerful tropical cyclone in history struck the northwest Pacific. The wind speed was estimated to reach 300 kilometers per hour and its energy was equivalent to the world's electricity production at that time. 50%, which shows how powerful its destructive power is.
When a typhoon forms, seen from above, the typhoon is a nearly circular atmospheric vortex. However, there is a point in the center of this whirlwind, where the sky is cloudless, and flocks of birds hide there, seeking shelter. The center point of this vortex is the eye of the typhoon, and the area where it appears can be called "pure land". No matter how violent the typhoon, its eye is gentle and silent.
Typically, the eye of a typhoon is a circular center with a diameter of about 40 kilometers. Sometimes its diameter can extend up to 200 kilometers or reduce to three or four kilometers. The higher the levelhe typhoon is high, the smaller the eye of the typhoon and, conversely, the larger the eye of the typhoon. As the typhoon moves, the shape of its eye will also become oval or irregular.
The weather in the area where the eye of the typhoon is located is generally cloudless or fair. Compared to the strong winds on the outskirts, the center of the typhoon has only a slight breeze or no wind. The silence in the eye of a typhoon often provides a good opportunity to rescue people affected by the nearby typhoon. However, this silence lasts very briefly, perhaps only half an hour, sometimes even less. Indeed, typhoons are constantly moving, just like their eye. When the eye of the typhoon moves, the weather in the location where the eye of the typhoon was previously located begins to deteriorate and birds begin to follow the movement of the typhoon, looking for new "shelters."
Many people think that a typhoon will only have one typhoon center.In fact, this is just the original situation. For some reasons, a typhoon can also produce two or more typhoon eyes. is the temporary paradise in people's hearts.
Typhoon is a type of tropical cyclone. Tropical cyclones have different names due to their geographic location. Tropical cyclones in the northwest Pacific are called "typhoons", while tropical cyclones in the Atlantic and northeast Pacific are called tropical depressions, tropical storms, or hurricanes depending on their intensity.
The intensity of the typhoon is first affected by the atmosphere. Temperature, humidity, atmospheric pressure, wind, and latent heat released during the condensation process in the atmosphere are all closely related to the intensity of the typhoon. It should be noted that changes in the above atmospheric elements are closely related to changes in the ocean and twanders.
“You can think of a typhoon as an engine. When global warming occurs, the fuel efficiency of the engine increases and its natural “power” output becomes greater. »
Overall, it appears that climate change will have some impact on the northward shift of typhoon landfall sites, but it is too early to draw such a conclusion on the basis for the evolution of a typhoon such as "Lekima". To determine whether changes in typhoon intensity are linked to climate change, we need to examine data quality and density, data sources and research methods, and long-term observations are necessary.
Detailed information:
Type of typhoon:
According to its intensity, it is divided into six levels: tropical depression, tropical depression storm, severe tropical storms, typhoons, tviolent yphoons and super typhoons.
According to the Notice of the China Meteorological Administration on the Implementation of National Standards for Tropical Cyclone Levels GBT 19201-2006, tropical cyclones are divided into six levels according to the maximum speed wind on the ground near the center. :?
1 , Tropical Depression (Tropical Depression), maximum wind speed level 6 to 7, (10.8 to 17.1 meters/second
2. ), maximum wind speed level 8 to 9 (17.2 to 24.4 meters/second);
3. Severe tropical storm, maximum wind speed level 10 to 11 (24.5 to 32.6 meters/second);
4. Typhoon (Typhoon), the maximum wind speed is 12-13 levels (32.7-41.4 meters/second
5. the maximum wind speed is 14-15 levels (41, 5 to 50.9 meters/second);
6. Super Typhoon (Super Typhoon), maximum wind speed ≥16 (≥51.0 meters/second). Network-Climate change could make reachincreasingly “northern” typhoons