-
Add Bookmark | Recommend this book | Back to the book page | My bookshelf | Mobile Reading
Free Web Novel,Novel online - All in hlnovel.com -> Historic -> Xiao Ge Lao Chapter 1193 Weather Forecast
Previous page Return to Catalog Next page
- Let¡¯s just talk about weather forecasting. Bei Peijia has established three observatories in the name of Nanjing Qintianjian in Nanjing Yuhuatai, Suzhou Dongting Dongshan and Chongming Island to forecast weather for Jinling, Suzhou and Chongming Island.
Divination of weather and rain is originally within the scope of Qin Tianjian's business. The oracle bone inscriptions from the Shang Dynasty recorded that "divination will happen on the Renyin day, and it will rain on the Gui day, and then there will be a storm."
"However, if Qin Tianjian only relies on divination to predict the weather, no matter how many heads he has, they will have many "auxiliary means" to predict weather changes by observing changes in wind and clouds, and summarize a set of systematic forecasting methods.
For example, "Lu Shi Chun Qiu" divides clouds into four types: "mountain clouds, water clouds, dry clouds, and rain clouds", and briefly categorizes clouds that herald different weather. Later generations also summarized a series of weather and meteorological proverbs based on the thickness and color of clouds.
For example, "The sky is covered with gray clouds, and it will rain continuously." This is "nimbus clouds." They are 'castle-shaped altocumulus clouds'; 'carp spots in the sky, no need to turn over the sun's grains' are 'translucent altocumulus clouds'; 'cotton-like clouds that rain quickly' are 'flocculated altocumulus clouds' Observation and research on clouds have been in place. .
They will also use the behavior of animals and changes in utensils to predict the weather. For example, "The water tank is sweating and the toads are screaming, and there will be heavy rain soon."
He will also make his own tools to predict whether it will be sunny or rainy, such as tightening a clean cotton thread on a wooden platform. If the cotton thread suddenly becomes loose, it means that the humidity has risen sharply, which indicates that it will rain today and tomorrow.
Another example is that during the Han Dynasty, Zhang Heng made the world's earliest wind direction instrument, the "Bronze Bird Waiting for the Wind" - a five-foot-tall pole was erected in an open space with a flexibly rotating bronze bird on it. Direction of rotation predicts wind direction and force¡
Generations of intersex people have accumulated rich experience. The old intersex people in the foundation who are responsible for this project can predict with an accuracy rate as high as 78% out of 10.
Based on the knowledge in "Elementary Physics", Bei Peijia also introduced the concept of using changes in air pressure to predict weather, and formulated the 'five-element forecasting method', which collects data on changes in temperature, wind speed, wind direction, humidity, and air pressure to comprehensively Analyze and predict weather.
As for the collection of these five types of data. The mercury-in-glass thermometer has long been produced by the Xishan Island Research Center.
The Wind Bronze Bird can measure wind speed and direction.
The hygrometer also existed in the Han Dynasty. "Historical Records" records a balance device with soil and charcoal placed at both ends of the balance. When the weather is dry, the charcoal is light, and the balance tilts toward the soil; when the weather is humid, the charcoal becomes heavier, and the balance tilts toward the charcoal It is exactly the same as the hygrometer invented in the 15th century in the West.
Beipejia improved this slightly, replacing the charcoal with dry cotton and the soil with weights. In this way, the water vapor content in the air can be measured based on how much water vapor the cotton absorbs.
As for the barometer, the mercury barometer is explained in the "Air Pressure" chapter of "Elementary Physics". The principle is very simple. However, the research center still has several difficulties to overcome, such as avoiding the leakage of mercury vapor. Therefore, for the time being, I can only use a small experiment after the main text.
It is to cover the empty bowl with pig urine foam and stick a long wheat straw on the surface of the skin. Then set up a bamboo ruler next to the bowl as a ruler. In this way, when the air pressure changes, the skin will contract accordingly, and the wheat straw will move slightly. Through the change of the position of the other end of the ruler, it can be read whether the air pressure rises or falls, and the extent.
Although this method is not accurate, it has a good auxiliary judgment effect. Thanks to the multi-pronged approach, the meteorological observatory's weather forecast for the next day is now very accurate. It has quickly become relied upon by people in the three places and has become an indispensable piece of important information in their lives.
Every evening, the meteorological observatory will send people to inform the local watchmen or toutuo people about the predicted weather for the next day, who will make announcements during the watch. Therefore, the warning words in these places have changed from the insignificant "The sky is dry and things are dry, be careful about the fire" to a more accurate weather forecast¡ª¡ª
"Bang bang bang", "It will rain tomorrow, it is better to spank the child" etc.
??~~
In addition, the meteorological observatory will also issue various disaster warnings, the most important of which is the typhoon warning.
Every summer typhoons cause great damage to the Jiangnan area. When floods come, Governor Yingtian has to move from Jinling to Suzhou to command the typhoon defense. The damage of typhoons is evident. Therefore, the people in Jiangnan called it "hurricane".
After grain is transported by sea, the harm of typhoons becomes even greater. Although those ships are as big as buildings, they are as fragile as a leaf in the strong winds and waves brought by typhoons. The discussion of shipping has been frustrated many times in the past. The most important principle is that "the sea is dangerously stormy and grain ships are prone to capsizing."??.
Mr. Zhao had no choice but to propose that all losses would be borne by the Royal Shipping Company, which dispelled the court's doubts. But now the fleet has hundreds of ships and thousands of sailors, transporting 200,000 taels of grain and 15,000 tons of cargo each time on the way out, and 30,000 tons of cargo on the return trip - a typhoon will cost hundreds of thousands of taels of silver. , No matter how rich Mr. Zhao and the group are, they can't stand it.
So he ordered Bei Peijia to set up six typhoon warning stations in Chengshantou, Tamluo Island, Chongming Island in Weihai, Shandong, Zhoushan in Zhejiang, Nanji Island in Wenzhou, and Penghu Island in Quanzhou, Fujian.
Anyone who lives by the sea knows that the sea will become restless before a typhoon approaches. The distance between waves will become longer, the sound will be heavy, and the beat will be slow, but when approaching the coast, huge power will be released, causing the water level on the coast to rise suddenly and the waves to be rough!
In addition, it will also be accompanied by a conch horn or distant thunder, which is especially clear and loud on a quiet night. When the sound gradually increases, it indicates that the typhoon is gradually approaching. There is also a cave facing the sea in Zhoushan. A few days before the typhoon approaches, there will be loud sea noise. The fishermen took preventive measures based on this omen and never made mistakes.
When the warning station in the south observes the approaching typhoon, it will release homing pigeons to report the arrival of the typhoon. The homing speed of homing pigeons is more than three times the moving speed of the typhoon center, and the message can be sent to Chongming Island up to two or three days in advance.
When the early warning station on Chongming Island receives an alert from Penghu, it will issue a blue warning to the Jiangnan area, Tamluo Island and Chengshantou observation stations. After receiving this warning, all ships should immediately return to the port to take shelter from the wind, and those that have not yet departed will cancel their departure. Governments at all levels and companies in groups should actively make preparations for typhoon and flood prevention, and people should strengthen doors and windows and reserve food and fresh water.
Typhoons in Jiangnan often trigger salt tides, which means seawater contaminates groundwater, making well water in Jiangnan bitter and muddy for several days, making it undrinkable. So store fresh water in advance.
Because the early warning station bears the name of Nanjing Qintian Prison, it can directly notify and remind the government of floods. Of course, the government will listen or not Whoever dares not to listen will be sealed to the bottom of the Pacific Ocean by the Sea Fighters!
??~~
When Chongming Island receives an alert from Wenzhou Nanji Island, a yellow warning will be issued. All outdoor gathering activities should be stopped throughout the Jiangnan region. Reinforce port facilities to prevent ships from anchoring, capsizing or collisions. All companies in the group stopped work and production, and all employees were mobilized to prepare for the storm, reinforcing or dismantling structures that would be blown away.
The government organized people to prevent typhoons and floods. People were advised not to go out at will, and residents of dilapidated buildings were moved to safe places.
When Chongming Island receives an alert from Zhoushan, an orange alert will be issued. The whole of Jiangnan has stopped all non-essential outdoor activities and entered a typhoon prevention state until the alert is lifted.
When the Chongming Island Warning Station itself detects an approaching typhoon, it will issue a red alert. The situation is particularly urgent at this time. Everyone must put wind safety first and not go out until the sky falls and the warning is lifted.
In addition, Tamna Island should simultaneously issue an alert of the same level when receiving an early warning from Chongming. However, when Chongming issues a red alert, Tamna should still issue an orange alert. It will not turn to red until the Tamna Island early warning station also detects the typhoon.
As for the Chengshantou Early Warning Station, in fact, the Bohai Sea area is rarely hit by typhoons. Their main role is to receive typhoon warnings from various early warning stations and relay them to Tianjin Health. In this way, Tianjin Port can know about a typhoon coming from the south five or six days in advance.
When the shipping fleet passes Chengshantou, they can also use the flags, lights and other signals raised by the early warning station to know that the typhoon is coming, stop going south, and take shelter in the nearby Malan Bay until the warning is lifted.
The fleet takes three days from Chongming to Tamluo, and three days from Tamluo to Weihaiwei. The current early warning station is enough to help the maritime fleet avoid typhoons.
Since the early warning station was established last year, ten typhoons have been warned. Although three typhoons took a turn, they did not reach Jiangnan. However, they made advance forecasts for all seven typhoons that affected Jiangnan, buying valuable preparation time for the people in Jiangnan and greatly reducing the disasters caused by typhoons. From Haigong to the gentry and common people, everyone praised him, and their understanding of the role of science became deeper.
¡°After almost every typhoon, the foundation will receive many new donations If there are typhoons in the other three seasons, the foundation will be self-sufficient and there will be no need for Mr. Zhao¡¯s blood transfusion.
The Royal Shipping Company even set a great record of no shipwreck accidents in two years, which made the princes of the imperial court exclaim that it was incredible. Of course, those who object for the sake of opposition do not believe it. Instead, they fiercely accused Zhao Hao of having ulterior motives. In order to prove that sea transport was better than water transport, he forcibly whitewashed the situation and concealed the records of the shipwreck!
Their reason is very simple. One-fifth of the water transport is lost every year. How can you avoid sinking the ship? So you must be hiding it.
You said you didn¡¯t hide anything, and you also produced evidence to prove that not a single ship was lost. But they covered their ears and refused to listen or believe it, saying that your evidence was also fabricated
It is useless to reason with such people. Physical persuasion must be used. It is easier to just shut up their bad mouths It is a pity that these dogs are raised by senior citizens in high places. Mr. Zhao and the Jiangnan Gang can only fight the dogs and bully their owners first. Sprayed by them.
"This is a good thing" Mr. Zhao comforted the aggrieved Chen Huaixiu and others: "Slander will make us more united."
ps. Sorry, I just finished writing. I hide my face in shame and continue writing (remember this website address: www.hlnovel.com)Open your ears, don¡¯t listen, don¡¯t believe it, even your evidence is fabricated
It is useless to reason with such people. Physical persuasion must be used. It is easier to just shut up their bad mouths It is a pity that these dogs are raised by senior citizens in high places. Mr. Zhao and the Jiangnan Gang can only fight the dogs and bully their owners first. Sprayed by them.
"This is a good thing" Mr. Zhao comforted the aggrieved Chen Huaixiu and others: "Slander will make us more united."
ps. Sorry, I just finished writing. I hide my face in shame and continue writing (remember this website address: www.hlnovel.com - Didn't finish reading? Add this book to your favoritesI'm a member and bookmarked this chapterCopy the address of this book and recommend it to your friends for pointsChapter error? Click here to report
- Previous pageCatalogNext page