Traditional Culture Encyclopedia - Weather inquiry - In some areas, autumn turns against spring, and crops sprout together after harvest. What does this mean?
In some areas, autumn turns against spring, and crops sprout together after harvest. What does this mean?
The weather forecast calls rain and snow precipitation, and the amount of precipitation is called precipitation. The unit of precipitation is usually millimeters. 1mm precipitation refers to the water depth per unit area1mm.
1mm How much precipitation falls into the fields? The area per mu is 666.7m2, so the precipitation of 1mm is equivalent to an increase of 0.667m3 of water per mu. Every cubic meter of water is 1000 kg, so the precipitation of 1 mm is equivalent to watering about 650 kg of water per mu. According to the measurement, the rainfall of 5 mm can make the dry land soak 3 cm to 6 cm.
In the weather forecast issued by the meteorological department, there are some professional terms such as light rain, moderate rain and heavy rain. The difference between them is: light rain refers to the rain with the precipitation not exceeding10mm within 24 hours, with the range of 5mm to16.9mm as moderate rain,10mm to 24.9mm as moderate rain, and17mm to 37. If the rainfall exceeds 50 mm in 24 hours, it is called rainstorm; If it exceeds 100 mm, it is called a torrential rain; If it exceeds 250 mm, it is called rainstorm.
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