Distribution law of world temperature

The distribution law of world temperature: it decreases from low latitude to high latitude, so the isotherm is generally parallel to latitude.

The temperature of the sea and land at the same latitude is different. In summer, the isotherm protrudes from the land to the high latitude, and the ocean protrudes from the low latitude. The temperature changes in different days and years. Daily changes, the highest temperature is around 2 pm, and the lowest temperature is around sunrise. The annual change shows that it is the hottest in July, the coldest in June, the hottest in August and the coldest in February in the northern hemisphere in 65438+ 10. The southern hemisphere is opposite to the northern hemisphere.

Extreme temperature is also called absolute temperature. Refers to the extreme temperature in a specific period of time over the years (such as a certain day, a certain month, a certain year). It can be divided into extreme minimum temperature and extreme maximum temperature. In addition, taking the isotherm of the hottest monthly average temperature 10℃ and the isotherm of the hottest Leng Yue average temperature 18℃ as boundaries, three zones are divided into cold zone, warm zone and hot zone. This climate zone is called the temperature zone. Basically, it is also divided by latitude and extends along the latitude direction.

Natural factors:

The temperature in a certain place changes periodically not only because of the change of solar radiation, but also because of the movement of the atmosphere rather than periodically. The change of actual temperature is the result of the interaction between these two aspects. If the former plays a big role, the temperature changes periodically; On the contrary, it shows an aperiodic change.

However, from the general trend and most cases, the periodicity of daily and annual temperature changes is still the main one. Various components in the heat balance, such as radiation difference, latent heat and sensible heat exchange, are affected by different control factors. Astronomical factors such as latitude and season have obvious zonal and periodic characteristics.

The above contents refer to Baidu Encyclopedia-Global Climate.