What is climate anomaly?

Climate anomaly refers to the relatively long-term change of the climate system beyond the normal range. Climate anomalies may be manifested as rising or falling temperatures, increasing or decreasing precipitation and increasing extreme weather events. The reasons may include natural factors and human factors.

Natural factors include solar radiation, volcanic eruption and changes in the earth's orbit. These factors will cause climate fluctuation, such as the change of solar radiation will affect the temperature change of the earth.

Human factors are mainly the impact of human activities on the climate system. For example, a large number of greenhouse gas emissions lead to the strengthening of the greenhouse effect, which in turn causes climate warming. Greenhouse gases mainly include carbon dioxide, methane and nitrous oxide, mainly from burning fossil fuels, deforestation and agricultural activities.

Climate anomalies have an important impact on human beings and the ecological environment. For example, climate warming leads to melting glaciers and rising sea levels, threatening residents and ecosystems in coastal areas. Extreme weather events, such as rainstorm, drought and hurricane, will also have a negative impact on people's lives and economy.

In order to cope with climate anomalies, countries around the world have taken many measures, including reducing greenhouse gas emissions, improving energy efficiency and developing renewable energy. In addition, the international community has also responded to the challenge of climate change through international cooperation mechanisms such as the Paris Agreement.