Open AccessAnalysis on Extreme Temperature and Precipitation Event in Dabie Mountain in West Anhui during 1960-2013
Author(s) -
Yannan Zhao,
Xinyu Cheng,
Xiaoxiao Luan,
Yuan Luo
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/768/5/052101
Subject(s) - daytime , precipitation , maximum temperature , climatology , environmental science , atmospheric sciences , meteorology , geography , geology
This paper adopts the daily maximum temperature, minimum temperature and precipitation observation data in 1960∼2013 of each county weather station in West Anhui to analyze changes of temperature and precipitation extremes in that area with linear method. Research shows: The days with nighttime and daytime extreme low temperature are decreasing obviously at the speed of 3.104 days/10 years and 1.157days/10 years. The decrease amplitude of days with nighttime extreme low temperature is 2-4 times of that in daytime. The days with nighttime and daytime extreme high temperature are increased at the speed of 2.529 days/10 years and 0.638day/10 years. The former has passed significance test, but the latter has not. The daily range is reducing at the speed of -0.076°C/10 years. The one-day maximum precipitation is rising at the speed of 3.411mm/10years, and five-day maximum precipitation is decreasing at the speed of -1.558mm/10 years; the days with moderate rain are decreased -0.176days/10 years; maximum continuous precipitation days are decreased -0.065 day/10 years; maximum continuous non-precipitation days are decreased -0.079 day/10years. However, the significance test has not been passed. The precipitation frequency in that area becomes smaller.