It is said that the weather on the mainland changes quickly, but in fact, tropical ocean storms change even more.
In early May, due to changes in the direct sunlight point, energy was injected into the ocean, and with the cooperation of the environment, multiple storm embryos appeared in the past few days, eventually creating a situation where two storms danced together, and even a strong typhoon co-occurred.
dance.
In fact, there are many storms appearing in the global tropical oceans in May, but in the end only two emerged victorious, one was Storm Eronzo in the Southern Ocean, and the other was Storm Harold in the South Pacific.
Especially on May 1-2, Aironzuo first rose to a strong typhoon of Category 15, establishing the title of the first strong typhoon in May.
Subsequently, Storm Harold also broke out. When the official broadcast was made at 6 pm in May, Harold directly became another Category 15 storm, with a maximum wind speed of 48 meters/second.
This is the second Category 15 strong typhoon in the world in May, and it has also attracted attention and even major focus.
There are two reasons for this. One is that it has great potential. Level 15 or so is far from its end point. Even Chouguo predicts that it will reach level 17, and judging from multiple official forecasts, this guy is still going to land.
But after all, it is in the South Pacific, and the only ones it can affect are a few island countries. If they don't travel there, many people don't particularly care.
Sure enough, on May 6, Storm Harold changed again, its intensity greatly increased, setting a new record. The latest official forecast: maximum wind speed of 120Kt, the world's first Category 16 super typhoon Harold was generated that year.
Specifically, in the early morning of the 6th, data from Fiji's official meteorological bureau showed that Storm Harold, which was already a Category 15 strong typhoon, now upgraded one level, from a Category 4 severe tropical cyclone to a Category 5 severe tropical cyclone. Naturally
That is the level of super typhoon level 16.
Of course, European and American meteorological agencies, especially the Joint Typhoon Warning Center JTWC, also gave Harold’s intensity report of a central minimum pressure of 936 hPa and a maximum wind speed of 120Kt, once again confirming the strength of level 16.
At this time, everyone was sure that the wind force of Storm Harold had exploded for the second time. It was a strong tropical cyclone of Category 5, and now the wind force has directly reached Category 16, which is a super typhoon level.
As for the second reason, it is the fundamental reason why Harold was noticed by people all over the world.
An anchor is driving a canoe he made by himself, riding through the typhoon sea for fifteen days, and is about to arrive at his destination.
It sounds very much like a young man who would do whatever it takes to gain traffic.
The only difference is that this guy has hundreds of millions of fans, and at least five million people watch his live broadcast every day. And just five days ago, with the help of an undersea volcano, he surfed the wave of the century and boarded the "SUEFER"
》Cover.
Even on TV, a variety show he participated in a month ago is being replayed repeatedly. The reason is that the ratings are too high, so it keeps replaying it.
It is said that in the near future, an animated film based on his image and actual production will be released. There will also be a wave of animated films being prepared by the end of the year, which is really exciting.
Not to mention his past deeds, even if you just read a rough introduction of more than a dozen lines, you can call him a "legend."
Through this information, anyone who doesn’t know him well can know that this is not a young man seeking death for popularity, but a master of survival with real skills, a Dias, Amundsen style, who will be the leader for hundreds of years to come.
A person that people talk about.
When you are prepared and have the strength, it is no longer a simple act of seeking death, but a vigorous adventure and challenge, a game of the brave, and a recast of the past glory of mankind.
On the Viking, a lit torch was placed on the bow of the ship and was blown left and right by the strong wind.
Bi Fang sat on the edge of the boat, looking up at the stars looming in the sky, holding a piece of charcoal in one hand and writing and drawing on the wooden board.
If you look carefully, you will find that there are some complicated formulas on the wooden boards, which can make you dizzy just by looking at them.
The ancient Polynesians lived on small islands in the middle of the Pacific. They had no maps or compasses; they navigated by observing the ocean and sky and reading the stars and waves.
The stars in the sky guide them at night, while the colors of the sky and sun, the shape of the clouds, and the direction of the swells guide them during the day. The swells will tell them that there is land ahead, and that there are birds flying to the sea in search of food to represent the islands.
It's already too late.
They can sail thousands of kilometers from Hawaii to Tahiti, and their wisdom is amazing.
Bi Fang is doing the same thing at this time, but his skills are higher. It is not empiricism, but scientism, which is the supreme wisdom of human evolution to this day.
At least thousands of years ago, the Polynesians had absolutely no idea what trigonometric functions were when they migrated.
If it weren't for the typhoon, it would have been cloudless and starry here, which would make it easier to calculate. However, with the typhoon, the visibility was much worse at night. Fortunately, we could still see a few of the most important stars.
"When I was in Northern Europe, I used the sun to calculate latitude and longitude, but this method didn't work very well on the sea, because our ship was ups and downs, and the length of the shadow of the upright stick would also keep changing. Fortunately, we can still
You can use the stars, which is also a very simple way."
[Put down the trigonometric functions in your hands, and we can also talk about the meaning of the word simple.]
[Woooooooo, the great mathematician has started again. I am ashamed. I am ignorant and incompetent. I will quit the live broadcast room.]
【Put down the charcoal pencil in your hand!
!]
"How the Age of Discovery was positioned is actually very simple."
"Zebrowski specifically talks about this issue in the fifth chapter of "Exploring the Earth" in the book "The History of the Circle."
Bi Fang completely ignored the audience's wails and started explaining directly.
"In 200 BC, the ancient Greek scientist Eratosthenes had already begun to measure the circumference of the earth."
"He used the length of the pole's shadow on the summer solstice to measure the incident angle of sunlight and the distance between Alexandria and Seni on the Tropic of Cancer. He measured the circumference of the Earth to be 216,000 stades, which is slightly less than 40,000 kilometers.
"
"This measurement is very close to the precise value measured today, which is an astounding achievement."
"In addition, Eratosthenes defined the concepts of the equator and the tropic line by measuring the trajectory of the sun at the summer solstice, winter solstice, vernal equinox and autumnal equinox. These works provided a theoretical basis for navigation positioning."
"The work of Eratosthenes established the concept of latitude and longitude."
"The radius of the sphere is known. If we can know the longitude and latitude of two points, it will be easier to calculate the distance between the two points, and then plan the sailing time, or draw a rough navigation chart."
"Thus, the problem of navigation positioning is transformed into how to determine one's longitude and latitude in the vast sea."
"And the basis for everything ultimately requires a reference system that can remain constant."
"Of course it can't be found in the vast ocean, so we can only place our hope in the stars."
Bi Fang pointed to the vast night sky and followed his fingers. There was an eternal star emitting extremely dazzling light. Even if there were a few dark clouds, everyone could clearly see its existence.