What is the general trend of annual precipitation distribution in my country? The 400 mm isohyet is also known as

Precipitation is a measure of how much precipitation a region receives. Judging from the seasonal distribution of precipitation, the distribution of precipitation in my country is different. Isoprecipitation lines generally refer to lines connecting points with the same precipitation at the same time on a map, with water amounts of 800mm, 400mm, 200mm, etc. The densely packed lines indicate that the distribution of precipitation in different regions is quite different. Let's learn more about it!

Contents of this article

1. What is the general trend of annual precipitation distribution in my country?

2. The 400 mm isohyet is also known as

3. The precipitation in a certain area is about 50

What is the general trend of annual precipitation distribution in my country?

The general trend of annual precipitation distribution in my country is decreasing from the southeast coast to the northwest inland. There are great differences in precipitation in my country. The southeast coastal area is close to the ocean and is affected by monsoons and ocean currents, so the precipitation is relatively large. The northwest inland area is far from the ocean and has high terrain, which hinders the entry of water vapor and has low precipitation.

The annual precipitation in my country's southeastern coastal areas is over 1,600 mm, 800 mm near the Qinling Mountains and the Huaihe River, and decreases to 400 mm northwestward to the Greater Khingan Range, the Yin Mountains and the southeastern Qinghai-Tibet Plateau. The further inland you go, the less precipitation there is.

Precipitation is a measure of how much precipitation a region has. Judging from the seasonal distribution of precipitation, the distribution of precipitation in my country is different. Most of the precipitation is concentrated in summer and autumn. In comparison, there is less rain in winter and spring.

In addition to the southeastern part of my country being affected by the monsoon, the southwestern region is greatly affected by the water vapor of the southwest monsoon from the Indian Ocean. In winter, the northwest monsoon from the interior of the Eurasian continent prevails in my country, with very little water vapor content and little precipitation.

The 400 mm isohyet is also known as

The 400 mm precipitation line is also known as the boundary between semi-humid and semi-arid regions, the boundary between crop farming and animal husbandry, the boundary between agricultural civilization and nomadic civilization, the boundary between the northwest and northern regions, the boundary between the monsoon and non-monsoon regions, etc. The 400 mm precipitation line roughly divides my country into two halves: the southeast and the northwest.

The 400 mm isohyet is an important geographical dividing line in my country, roughly passing through Daxinganling, Zhangjiakou, Lanzhou, Lhasa, and the eastern part of the Himalayas.

Isoprecipitation lines generally refer to lines on a map that connect points with the same precipitation at the same time. There are 800mm, 400mm, 200mm and other water volumes. Where the lines are densely packed, it means that the distribution of precipitation areas varies greatly.

Isoprecipitation lines are an important tool for studying the precipitation distribution patterns and characteristics in different places in the same region and the same period. They can be divided into daily isohyet lines, monthly isohyet lines and other types.

What is the precipitation in a certain area?

The precipitation in a certain area is about 50 mm. In my country, the rainfall is measured in millimeters, which can intuitively indicate the amount of rainfall. Commonly used instruments for measuring rainfall include rain gauges and measuring cups. In the weather forecast issued by the meteorological department, there are professional terms such as light rain, moderate rain, and heavy rain.

Precipitation refers to the depth of accumulation on the horizontal surface of liquid or solid (after melted) water that falls from the sky to the ground within a certain period of time without evaporation, infiltration or loss.

1 mm of precipitation means that the precipitation on one acre of land (666.7 square meters) reaches a water depth of 1 mm. Precipitation is a measure of how much precipitation there is in a region.

Precipitation specifically refers to the depth of liquid and solid (after melting) precipitation that falls from the sky to the ground and accumulates on the horizontal surface without evaporation, infiltration or loss.