What is the difference between the previous weather and the current weather?

"Climate change now brings greater risks and heavier impacts." Chao Qingchen, deputy director of the National Climate Center, said that this summer, many places in the country have exceeded historical extremes of high temperature. From the perspective of climate change, You see, high temperatures are a concentrated expression of climate warming. In the context of climate warming, high-temperature heat waves will occur more and more frequently in the future, and there will be more record-breaking incidents.

For example, frequent and severe extreme weather and climate events, changes in water resources, glacier retreat, snow melt, sea level rise and impacts on ecosystems, most of which are physical impacts. The "Blue Book" mentioned that in the past 60 years, China's average annual precipitation has increased, but the average annual precipitation days have decreased significantly, which shows that the intensity of precipitation has increased. In fact, people feel that there is less drizzle, but more heavy rain and heavy rain.

At the same time, the impact of climate change will spread to multiple systems and have an adverse impact on the economy and society. For example, hot weather will have adverse effects on human health, epidemic prevention and control, water and electricity supply, etc.

In addition, climate change manifests itself in different regions and fields to varying degrees. It may not have a completely negative impact on some regions, but it will have a negative overall impact on China.