Several warm winter years occurred in Shandong from 1986 to 2006

There were 18 warm winter years in Shandong from 1986 to 2006. In the past 50 years, the temperature in Shandong Province has shown a clear warming trend. From the 1960s to the 1990s, the annual average temperature ranged from 12.51 to 13.46C. Taking 1986 as the dividing point for temperature change, the temperature from the 1960s to the mid-1980s (1986) was After a relatively cold period, the climate in Shandong Province then entered a warm period, with the largest temperature increase from the 1980s to the 1990s, which was 0.60C, and the annual average temperature change tendency was 0.302C/10a. After entering the 21st century, the temperature change trend continued to maintain, in 2001 By 2008, the average temperature reached as high as 13.9C. The winter temperature warming in Shandong Province was the most prominent. From 1986 to 2006, there were 18 warm winter years. In the past 50 years, the high temperature index in Shandong Province also showed a trend of first decreasing and then increasing. Since the 1990s, there has been a significant increase. At the same time, the maximum temperature has also increased with the increase in high temperature days. The average annual precipitation in Shandong Province has generally shown a significant downward trend, with a tendency rate of 31.7mm/10a, mainly reflected in the decrease in summer precipitation. The climate background has led to an increase in the frequency and intensity of extreme weather and climate events. Affected by this, extreme weather and climate events such as heavy rainfall, heavy snowfall, high temperature, drought, and low temperature freezing occur frequently in Shandong Province, which has a direct impact on human health and other aspects. and indirect impacts, such as impacts on agricultural production, food safety, drinking water supplies, sanitation facilities, and disease transmission. Remaining consistent and showing obvious regional characteristics, the temperature in Shandong Province has shown a clear warming trend in the past 50 years. From the 1960s to the 1990s, the annual average temperature ranged from 12.51 to 13.46C, with 1986 as the dividing point of temperature change. , the period from the 1960s to the mid-1980s (1986) was a cold period, and then the climate in Shandong Province entered a warm period. The temperature increase from the 1980s to the 1990s was the largest, at 0.60C, and the annual average temperature change tendency was 0.302"C/10a After entering the 21st century, the temperature change trend has continued to maintain. The average temperature in 2001-2008 was as high as 13.9C. The winter temperature warming in Shandong Province was the most prominent. From 1986 to 2006, there were 18 warm winter years: Shandong Province in the past 50 years. The number of high temperature days also shows a trend of first decreasing and then increasing, with a significant increase since the 1990s. At the same time, the maximum temperature also increases with the increase in the number of high temperature days. The average annual precipitation in Shandong Province generally shows a significant downward trend, with a tendency rate of 31.7. mm/10a, mainly reflected in the decrease in summer precipitation. The climate background has led to an increase in the frequency and intensity of extreme weather and climate events. Affected by this, extreme weather such as heavy rainfall, heavy snowfall, high temperature, drought, and low temperature freezing have occurred in Shandong Province. Frequent climate events have had direct and indirect impacts on human health, such as agricultural production, food safety, drinking water supply, sanitation facilities, and disease transmission. Fluke diseases are most significantly affected by temperature, and rising temperatures allow mosquitoes to survive. As the climate warms and the frequency of warm winters increases, the activity range of insects becomes larger, and the occurrence and development of epidemic diseases spread by insect vectors are also increased. increased before.