Analysis on the variation characteristics of diurnal temperature range and its influencing factors in Huanggang city from 1961 to 2018

doi:10.14088/j.cnki.issn0439-8114.2021.20.005

Abstract

Abstract: Based on the data of daily average temperature, maximum temperature and minimum temperature in Huanggang city from 1961 to 2018, the variation characteristics and influencing factors of diurnal temperature range in Huanggang city were analyzed. The results showed that in the past 58 years, the annual average diurnal temperature range in Huanggang city was 7.6 ℃, which showed a significant downward trend, and the climate tendency rate was -0.127 ℃/10 a; In the average diurnal temperature range of four seasons, it showed a slow upward trend in spring, and a downward trend in summer, autumn and winter, with the largest downward trend in summer. The annual average diurnal temperature range changed suddenly in 1978, which showed a significant decrease at first and then a slow increase, and there were 13 years low-frequency oscillation and 3~7 years high-frequency oscillation period in the past 58 years. The annual average diurnal temperature range was significantly positively correlated with sunshine hours, and significantly negatively correlated with precipitation, average water vapor pressure, average relative humidity and total clouds, each meteorological element changes the diurnal temperature range by affecting the maximum and minimum temperature.

Key words: diurnal temperature range, variation characteristics, mutation, influence factors, Huanggang city

CLC Number:

P423.3

GUO Li, YAN Kai-lin. Analysis on the variation characteristics of diurnal temperature range and its influencing factors in Huanggang city from 1961 to 2018[J]. HUBEI AGRICULTURAL SCIENCES, 2021, 60(20): 24-29.

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