Abstract
Based on the daily temperature, precipitation and sunshine data of the National Weather Station of Weixian County, Hebei, China from 1961 to 2014, the average temperature, accumulated temperature, precipitation and sunshine trends of the year and four seasons were analyzed. The results showed an upward trend of the average annual temperature, average annual maximum temperature and average annual minimum temperature and the minimum temperature increase is the largest. The average temperature in summer is decreasing, while the average temperature, maximum temperature and minimum temperature in spring, autumn and winter showed an upward trend. ≥0°C accumulated temperature increased by 193.82°C for 54 years, and ≥10°C accumulated temperature increased 54.59°C for 54 years. Weixian County sunshine hours were 119.121 h/10 years to reduce the rate of adverse effects on crop growth; annual precipitation decreased by 116.4 mm for 54 years, the maximum precipitation decreased by 8.2 mm, and the number of annual precipitation decreased 18.6 d, which caused great pressure on groundwater recharge
Highlights
In recent years, the rapid global warming is an indisputable fact, and the 1880-2012 global average surface temperature increased by about 0.85 ̊C
The results showed an upward trend of the average annual temperature, average annual maximum temperature and average annual minimum temperature and the minimum temperature increase is the largest
Weixian County sunshine hours were 119.121 h/10 years to reduce the rate of adverse effects on crop growth; annual precipitation decreased by 116.4 mm for 54 years, the maximum precipitation decreased by 8.2 mm, and the number of annual precipitation decreased 18.6 d, which caused great pressure on groundwater recharge
Summary
The rapid global warming is an indisputable fact, and the 1880-2012 global average surface temperature increased by about 0.85 ̊C. Global warming is accompanied by an increase in local extreme weather and climate events. Weixian County is located in the south of Hebei Province, China. The temperature has risen and the rainfall has been reduced. This has accelerated the development of crops and shortened the growth period, adversely affecting the local economic and social development. It is important to study the response of Weixian under global climate change and understand the climate change rules in Weixian, which are of great reference significance to the local agricultural modernization and planting structure adjustment
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