一周天气记录表科学

2024-09-24 03:52:05

1、What do the sun, clouds, raindrops, and snowflakes in the weather forecast repre sent?
1. The sun symbolizes a sunny day and indicates a sunny day.
2. Clouds repre sent cloudiness, and there will be all kinds of clouds in the sky.
3. The appearance of the sun and clouds together means that it is cloudy and the brilliance of the sun may not be visible.
4. Raindrops under the clouds indicate imminent rain, while clouds with lightning signs indicate thunderstorms.
5. The snowflake symbol under the clouds indicates light snow, two snowflakes repre sent medium snow, and three snowflakes indicate heavy snow.
Disastrous weather warning signals are issued by the Central Meteorological Observatory, including 14 types of weather warnings such as typhoons, heavy rains, and snowstorms. The colors "blue, yellow, orange, and red" in these signals indicate the intensity of severe weather from weak to strong.
Weather forecast content includes weather conditions for a period of time in the future, such as sunshine and rain, temperature, wind direction and wind strength, etc. In China, accurate weather forecasts can provide services for industrial and agricultural production and people's lives. Weather forecast is based on meteorological observation data and uses the principles of meteorology, dynamic meteorology and statistics to pre dict the weather for a certain period of time.
Since ancient times, people have tried to pre dict the weather. Around 650 BC, the Babylonians pre dicted the weather by observing clouds. Around 340 BC, Aristotle described different weather conditions in his works. There have been records of weather forecasting in ancient China, at least around 300 BC. At that time, forecasts were largely based on observations of weather phenomena, such as sunset signaling good weather. These observations gradually formed weather proverbs, although some later proved to be inaccurate.
Since the 17th century, scientists have begun to use scientific instruments such as barometers to measure weather and make forecasts based on these data. It was not until the invention of the telegraph in 1837 that a wider range of weather data could be used for forecasting.