Traditional Culture Encyclopedia - Weather forecast - When observing the weather, considering the factors that affect the weather will help us better understand the weather.
When observing the weather, considering the factors that affect the weather will help us better understand the weather.
Here are some common factors that affect the weather:
1, atmospheric pressure: atmospheric pressure refers to the pressure of the atmosphere per unit area, usually expressed by atmospheric pressure. The change of air pressure will lead to the movement of air flow, which will affect the change of weather. High pressure usually means sunny and stable weather, while low pressure is often accompanied by rain or storm.
2. Temperature: Temperature refers to the degree of thermal movement of molecules in the air. The change of temperature will directly affect the feeling and change of weather. Rising temperature may lead to hot weather, cloudy weather or thunderstorm weather; A drop in temperature may bring cold, snow or freezing.
Humidity: Humidity refers to the content of water vapor in the air. The change of humidity will affect the form and intensity of precipitation. High humidity is usually associated with cloudy and rainy days, while low humidity may lead to dryness and drought.
4. Wind direction and speed: Wind is the movement of air on the earth's surface, and the change of wind has an important influence on the weather. The direction and speed of wind will affect the movement and interaction of air masses, which will lead to different weather phenomena, such as sunny days, cloudy days and storms.
5. Cloud amount and cloud type: Clouds are formed by condensation of water vapor suspended in the air. Observing the shape, height and coverage of clouds can provide important clues about the weather. Different cloud types and cloud cover can indicate different weather conditions, for example, cumulus clouds may be accompanied by short-term showers, and stratus clouds may lead to persistent cloudy days.
6. Solar radiation: Solar radiation refers to the spread of solar energy to the earth in the form of light or heat. The intensity and distribution of solar radiation will affect the surface temperature and atmospheric circulation, and then affect the weather changes.
How to observe the weather
1. Observe the change of air pressure: measure the air pressure with a barometer and pay attention to the trend of air pressure change. The increase or decrease of air pressure may mean the coming weather change, for example, the decrease of air pressure may indicate the possibility of rain.
2. Rain observation: Observe the precipitation, including the intensity, time and type of rain. This can provide important information about the current weather and the future weather.
3. Use the weather forecast: query the weather forecast to get more accurate and specific weather information. The weather forecast can provide the weather conditions in the next few days, including temperature, humidity and precipitation probability. , to help you arrange your activities and travel plans reasonably.
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