湖北农业科学 ›› 2021, Vol. 60 ›› Issue (20): 24-29.doi: 10.14088/j.cnki.issn0439-8114.2021.20.005

• 资源·环境 • 上一篇    下一篇

1961—2018年黄冈气温日较差变化特征及其影响因子分析

郭黎1, 严凯琳2   

  1. 1.浠水县气象局,湖北 浠水 438200;
    2.黄冈市气象局,湖北 黄冈 438000
  • 收稿日期:2020-06-03 出版日期:2021-10-25 发布日期:2021-11-05
  • 作者简介:郭 黎(1992-),男,湖北宜昌人,工程师,在读硕士研究生,研究方向为天气预报、气候变化,(电话)18995880466(电子信箱)273562859@qq.com。
  • 基金资助:
    国家自然科学基金委员会重大研究计划集成项目(91744311); 黄冈市气象局自立科研课题(2019T06)

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

GUO Li1, YAN Kai-lin2   

  1. 1. Xishui Meteorological Bureau,Xishui 438200,Hubei,China;
    2. Huanggang Meteorological Bureau,Huanggang 438000,Hubei,China
  • Received:2020-06-03 Online:2021-10-25 Published:2021-11-05

摘要: 利用1961—2018年黄冈市逐日平均气温、最高气温、最低气温数据,对黄冈市气温日较差的变化特征及其影响因子进行分析。结果表明,近58年,黄冈市年平均气温日较差为7.6 ℃,整体呈明显下降趋势,气候倾向率为-0.127 ℃/10年;各季节平均气温日较差中,春季表现为缓慢上升趋势,夏、秋、冬季三季均表现为下降趋势,且夏季下降幅度最明显。年平均气温日较差在1978年左右有突变发生,表现为先显著减少后缓慢增加,并在58年中有13年的低频振荡和3~7 年的高频振荡周期。年平均气温日较差与日照时数表现为显著正相关,与降水量、平均水汽压、平均相对湿度以及总云量均表现为显著负相关,各气象要素通过影响最高、最低气温使气温日较差发生变化。

关键词: 气温日较差, 变化特征, 突变, 影响因子, 黄冈市

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

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