Impact of global warming

Rising sea level, melting glaciers, increasing extreme weather and shortening the cold season have affected human health and destroyed the ecological environment. Since the industrial revolution, mankind has used a lot of fossil fuels such as coal and oil, thus emitting a lot of carbon dioxide into the atmosphere. The total amount of carbon dioxide emitted by human beings every year exceeds 40 billion tons.

The destruction of vegetation on the earth, especially the destruction of a large number of forests that can absorb carbon dioxide through photosynthesis, reduces the absorption of carbon dioxide by vegetation.

With the massive emission of greenhouse gases, the temperature rises, which has threatened people's homes. Global warming has gradually melted a large number of glaciers, leading to rising sea levels and threatening coastal areas. As the global temperature rises, the cold season will be shortened and the warm season will be extended. Global warming will lead to more and more extreme weather, such as droughts and typhoons. Global warming will lead to the increase of ozone concentration at low altitude, destroy human lung tissue and cause some lung diseases such as asthma. Global warming affects and destroys the biological chain and food chain, which will bring more serious natural consequences. In order to make our home better in the future, we should do our best to reduce greenhouse gas emissions, travel green and protect our ecological environment.

Global warming is a rapid climate change for the earth, but it is a slow climate change for human beings. It is gradually accumulated year after year, which will have many profound effects in a subtle way and may eventually reach qualitative change after quantitative change. Specifically, the impact of global warming can be summarized as the following five aspects: First, global warming itself is the change of climate and resource conditions, which will lead to the increase or decrease of temperature and precipitation, change the spatial distribution pattern of hydrothermal resources, and some areas will tend to be dry, while others will tend to be wet.

Global warming has aggravated the occurrence of natural disasters. For example, in the second half of the 20th century, the frequency of rainstorm in the middle and high latitudes of the northern hemisphere increased by 2% to 4%. At the same time, due to global warming, extreme weather phenomena such as El Ni? o, La Nina, cold wave and drought occur frequently.