Recent Changes in Temperature and Precipitation of the Summer and Autumn Seasons over Fujian Province, China

Zhiguo Ma,Chaoyuan Zheng,Wenqing Li,Lili Lin,Huiling Chen,Feiyue Yang,Qinyu Guo

doi:10.3390/w13141900

Abstract

Based on the observation data of daily temperature and precipitation in summer and autumn of 68 representative meteorological stations in Fujian Province from 1971 to 2018, using the climate Tendency Rate, Mann-Kendall trend test, Morlet wavelet analysis and other methods, this paper analyzes the variation trends of air temperature and annual precipitation and the wavelet periodic variation characteristics of annual precipitation time series in summer and autumn of Fujian Province over a period of approximately 48 years. The results show that over the approximately 48 years, the temperature and precipitation in summer and autumn in Fujian showed an obvious upward trend, which had a mutation around 2000, but the mutation time was different, and the precipitation was slightly earlier. The annual temperature and precipitation in summer and autumn experienced three oscillations on the 28a scale. In the 28a time scale of summer autumn seasonal oscillation, there are three negative centers and two positive centers. According to the characteristics of annual average temperature and annual precipitation in the first major cycle, the annual precipitation in summer and autumn will continue to increase in the future.

Highlights

Accepted: 5 July 2021Under the background of global warming mainly due to climate change, the presentation of temperature warming trends, resulting in the heat resources of agricultural climates increasing, has a major impact on agricultural production [1,2,3]
It can be seen that the average annual temperature was 24.7 ◦ C, the standard deviation was 0.5 ◦ C, and the coefficient of variation was 2.1
Our study provides a scientific understanding of the changing patterns of temperature and precipitation in Fujian Province by using data from historical stations, and the results provide preliminary and important information on the changing trends and time scales of temperature and precipitation

Summary

Introduction

Under the background of global warming mainly due to climate change, the presentation of temperature warming trends, resulting in the heat resources of agricultural climates increasing, has a major impact on agricultural production [1,2,3]. Global warming in the last 100 years has been more obvious, especially over the last approximately 48 years This warming is obvious on the millennium scale, and the warming in the last 100 years has been as high as 0.85~0.89 ◦ C, given in the Fifth. Assessment Report of the Intergovernmental Panel on Climate Change (IPCC; 2013) [4,5]. According to the Fifth Assessment Report of the Intergovernmental Panel on Climate Domestic scholars have done a lot of research on the characteristics and trends of changes in temperature, heat, etc., but the rate of change in different regions is different, and the impact on different crops is different [6,7,8,9,10].

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Results

Conclusion