Extracurricular reading: the secret of weather forecast: do you want to take apples when you go out, and end: just in case.
Do you need to take an umbrella when you go out, whether you can go to bask in the quilt tomorrow, whether you need to water or drain the ground, whether the flight will be delayed ... If you want to know the answers to these questions, just look at the weather forecast and you will know everything. It can be said that in today's society, weather forecast is an important information that everyone can't live without.
so, how is the weather forecast?
from a long time ago, human beings tried to predict what the weather would be like the next day or several days later. Around 65 BC, Babylonians predicted the weather according to the appearance of clouds. Around 34 BC, Aristotle described different weather conditions in his Theory of Astronomy. People in China have recorded the weather forecast at least around 3 BC. The ancient weather forecast mainly depended on certain weather phenomena, for example, people often observed fine weather after sunset. Such observations have accumulated to form weather proverbs, such as "Don't go out at sunrise, travel thousands of miles at sunset". The long-term observation and summary of weather phenomena have formed a forecast of the climate, such as "eating Dragon Boat Festival dumplings before sending cotton-padded clothes". These are the crystallization of wisdom summed up in long-term life practice.
after the 17th century, meteorological observation instruments such as thermometers and barometers appeared one after another, and ground weather stations were established one after another. Scientists began to use these scientific instruments to measure weather conditions and predict the weather according to these data. However, at that time, people couldn't transmit the data to the distant place quickly, and for a long time, people could only use local meteorological data to forecast the weather, which made the weather forecast very limited.
after the invention of the telegraph in p>1837, people were able to use large-scale meteorological data to predict the weather. In 1851, Britain first sent observation data by telegraph and drew a weather map on the ground to make a weather forecast. Since the 192s, air mass theory and polar front theory have been applied to weather forecast. In 193s, the invention of radiosonde, the appearance of high-altitude weather map and the wide application of long-wave theory in weather forecast expanded the analysis of weather evolution from two-dimensional to three-dimensional. In the late 194s, the application of weather radar provided an effective tool for the forecast of precipitation, typhoon, rainstorm and severe storm.
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