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July 2 at 25:7.
Holding the copied meteorological data in one hand, Tu Changwang pressed the up and down arrows on the keyboard with the other to check the program and the input data for the third time, and finally confirmed that the data input was correct.
"Okay, the inspection passed." Tu Changwang waved his hand.
Tang Hua: "Then, let's take off! Electric meter!"
The atmosphere of millions of square kilometers of land is "lived" in the computer.The air mass twists and turns, bumps back and forth, and when heat and cold collide, the air either mixes together, or one side pushes the other back.
During the day, the temperature of all air masses increases according to a certain parameter; at night, the temperature of the air masses decreases.The sun rises in the east and sets in the west, and there is still a time difference of several minutes to ten minutes for the air mass to heat up and cool down.
The movement of the atmosphere is not only plane movement, but also vertical movement, which is a three-dimensional model.
The atmospheric movement of the previous day will affect the next day, the atmospheric movement of the previous hour will affect the next hour, and the atmospheric changes in this area will affect several adjacent areas.This is not a three-body movement, but an N-body movement of hundreds of atmospheres in the Huanghuai area.
With the buzzing sound, the window that was closed when entering the data just now was opened again, because the temperature in the hall was rising steadily, and it would reach 20 degrees in a short while, so the window had to be opened for ventilation.
When Tianhe-220 is fully powered on, it consumes 25 kilowatts of power. In addition, the pump and cooling fan of the water cooling system also consume [-] kilowatts of power.
"Director Cheng, Mr. Zhu, Mr. Ye, Mr. Peichang, you won't be on duty here tonight?" Tang Hua saw that the comrades in the Meteorological Bureau had no intention of moving.
"Oh, I've been thinking about something else and didn't notice this. How long is it going to be?"
Tang Hua: "Now the calculation is 2 hours and 15 minutes, and the calculation is expected to end in 19 hours and 5 minutes, which is tomorrow afternoon."
……
July 2, afternoon.
"Is it all marked on the map?"
Huang Peichang: "It has been marked, and it has been checked twice."
"Let me see...the front moved northward on March 3?" Cheng Wang looked at the results of the weather simulation.
Zhu Kezhen: "Northward movement is certain, March 3th...March 9th..."
Chapter 175, Card draw ratio
"The first spring rain in Huainan will come early, laying the foundation for spring plowing and spring sowing"
"The time will enter March. In the people's communes in southern Jiangsu and northern Jiangsu, some commune members prepare farmyard manure for the fields, some use soybean flour cakes to supplement nutrition for the cattle, and some go to the township supply and marketing cooperatives early to get back chemical fertilizers. Carefully measure how much Jinkela should be used during spring plowing. Everyone is working hard."
"Plowing the field is the most important thing in spring. Only by planting the seeds of spring will there be harvest in autumn and plenty in winter."
"The spring rain helps spring plowing, and the fields are busy. March is the season for plowing and plowing in the Huainan and Huaibei areas. If there is another spring rain that falls at the right time, it will undoubtedly be the most beautiful note on the main theme of spring."
"When will the first spring rain fall in the Huaihe River this year? Recently, the National Meteorological Administration has conducted in-depth research on and developed the weather forecast theory, and then with the help of electronic computers, it has carried out a calculation of the future weather in the Huanghuai area. According to the calculation results , From March 3 of the Gregorian calendar (the 10st of the first month of the lunar calendar), Yancheng and Huai'an areas will usher in rainfall."
"Although the rainfall this time is not too heavy, it is undoubtedly a good boost for this year's spring plowing and spring planting."
"In the coming days of this year, the National Meteorological Administration will continue to provide medium and long-term weather forecasts for the Huanghuai region 10 to 15 days in advance to guide agricultural production in rural areas, reduce disasters and prevent disasters, and benefit the people of the whole country."
……
This is the first time the weather forecast has been published in a newspaper.
The weather forecasts in this era are all 1-2 days in the future, and they are all released by cable broadcasting, because the delivery cycle of newspapers will definitely make the weather forecast that is only 1-2 days in advance meaningless.
And it is not the weather forecast that can be popularized by broadcasting in the whole country.
When the national newspapers and local newspapers in the Huanghuai area successively reprinted this article written by Zhu Kezhen on February 2 and February 27, everyone was not used to it at first.After reading it, I understood: Oh, it's the weather forecast.Wait, what, the weather forecast?
The weather in half a month?
Some readers realized that the weather forecast in half a month has never been seen before.
"Our country is developing so fast. Last year, we launched an artificial satellite. After completing the five-year plan, wages have been raised. Now the country can forecast the weather 15 days later."
In Yancheng, the first people who saw the newspaper started a round of weather forecasting, because Yancheng was clearly mentioned in the article.
"Isn't the weather forecast normal? Every morning the radio says it won't rain today."
"What the radio said was a one-and-a-half-day weather forecast, but you can know the weather in half a month!"
……
Zhu Kezhen's article was published and gradually attracted everyone's attention.Some find it fresh, while others remain skeptical, thinking that they will only know when it rains or not.
In fact, the most skeptical about the weather forecast is that on the day when the results were obtained, several meteorologists from the National Weather Service...
"The northward movement of the front is certain, March 3th... It's very early, no, it's moving very fast." Zhu Kezhen said.
Ye Duzheng: "According to this forecast, the spring rain in Huainan area will come 10 days earlier, and even some areas in Huaibei will have the first spring rain. Of course, from the meteorological history, the spring rain 10 days earlier is about once every few years." , but the probability of this event happening is less than 20%, which is too small.”
Zhu Kezhen: "Wait, let me reorganize my thinking."
He finds out the notebook and opens it, quickly writes a series of formulas on the paper with a pencil, thinks hard about the map, writes a number on the paper for a while, uses a => arrow for a while, starts a new line, and then writes a formula, Constantly deduce.
After a long time, Zhu Kezhen said: "I have figured out how the program works."
Ye Duzheng: "You know the algorithms and theories used by this program, and I know all of them. What happens when it runs?"
"Here," Zhu Kezhen pointed to the location of Gaoyou Lake on the map, "On March 3, the computer calculated an oblique airflow, which affected Xinghua on the 3rd and 3th, and Dongtai on the 4th and 6th. And that leads to a global variable that gives the front a new impetus to keep moving."
Ye Duzheng: "It was calculated by a computer, but is the computer's calculation accurate?"
"I intuitively believe this is going to happen."
"Intuition?" Ye Duzheng said, "Brother Zhu, the intuition cells in my brain are not moving at all now."
……
Zhu Kezhen and Ye Duzheng can't convince each other by saying a word to each other.Obviously, neither of them can reproduce the supercomputer calculations with paper and pen, so they all rely on experience and intuition to judge whether the weather forecast calculated by the computer is accurate or not.
"Oh, it's not good. We plan to publish this result in tomorrow's newspaper. If we keep arguing, we will run out of time." In the other corner of the supercomputing hall, Tu Changwang whispered, and pointed helplessly at the competition of internal power over there. Zhu Kezhen and Ye Duzheng.
Tang Hua: "Director Tu, look at me."
Tang Hua first went out to the next door for a walk, and came back in half a minute.
"Old Zhu, Old Ye," Tang Hua said, "the first mid-to-long-term weather forecast we have obtained will definitely be published in tomorrow's newspaper. If it is too late, it will be too late. Since this issue is pending, let me step in and help you make a choice." .I have already drawn the big and small kings, A is the largest, then K, Q, J, 10, and 2 is the smallest. Four suits, spades, hearts, clubs, diamonds from big to small."
Tang Hua put the big and small kings of the playing cards aside, shuffled the cards once, made a trick on the table, straightened the cards, and shuffled them again.
"Okay, the two of you will each draw a card and compare the size." Tang Hua handed the poker cards to Zhu Kezhen first.
Zhu Kezhen drew out a card, 3 hearts.
Ye Duzheng laughed hehehe, "Brother Zhu!...Er..."