In the northern hemisphere, the highest temperature in a year is?

In the northern hemisphere, the highest temperature in a year usually appears in July. The highest temperature in the southern hemisphere appears in 65438+ 10 month.

In addition to the hottest months, it is also helpful to know the seasonal changes in the northern and southern hemispheres. In the northern hemisphere, spring lasts from March to May, summer from June to August, autumn from September to 165438+ 10, and winter from 65438+February to February. The division of these seasons is mainly based on the changes of temperature and weather.

Summer is usually characterized by high temperature and rain, and winter is characterized by low temperature and little rain. In the southern hemisphere, the seasonal variation is opposite to that in the northern hemisphere. For example, summer in the southern hemisphere is 65438+February to February, and winter is June to August. In addition, spring and autumn in the southern hemisphere are also opposite to those in the northern hemisphere. The main reason for this seasonal change is the tilt angle of the earth.

The earth revolves around the sun at an inclination of about 23.5 degrees, which makes the amount of sunlight received by different hemispheres different, resulting in seasonal changes. Usually, with the increase of altitude, the temperature will gradually decrease. This is because in the air, the higher the altitude, the lower the atmospheric pressure and the thinner the air, so the faster the heat is emitted.

Climate types can also affect temperature changes. For example, areas with tropical rainforest climate are usually characterized by high temperature and rain, while polar climate is characterized by low temperature, snowfall and a small amount of precipitation. These different climate types are the result of the combined action of geographical location, ocean current, atmospheric pressure system and atmospheric circulation.

The impact of global climate change on human beings

Global climate change leads to frequent extreme weather events, such as heat waves, droughts, floods and hurricanes. These extreme weather events threaten human life and health, and affect agriculture, energy and infrastructure. Climate change affects rainfall distribution and available water resources. Some areas may suffer from drought, while others may suffer from floods.

This may have an impact on human drinking water, agriculture and ecosystems. Climate change has an impact on agriculture, leading to a decline in crop yield and an increase in food prices. This may have an impact on food security and the livelihood of the poor. Climate change leads to the reduction of biological habitats and threatens species survival and biodiversity.