| SPATIOTEMPORAL DISTRIBUTION CHARACTERISTICS AND VARIATION TRENDS OF HIERARCHICAL PRECIPITATION IN GUANGDONG PROVINCE OVER THE PAST 50 YEARS |
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| 作者姓名： | 刘显通 郑腾飞 万齐林 于 鑫 |
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| 摘 要： | The climatic characteristics of the precipitation in Guangdong province over the past 50 years were analyzed based on the daily rainfall datasets of 86 stations from 1961 to 2010. The rainfall was divided into five categories according to its intensity, and their spatiotemporal characteristics and variation trends were investigated. The annual rainfall amount was within 1,500 to 2,000 mm over most parts of Guangdong, but substantial differences of rainfall amount and rainy days were found among different parts of the province. There were many rainy days in the dry seasons (October to March), but the daily rainfall amounts are small. The rainy seasons (April to September) have not only many rainy days but also heavy daily rainfall amounts. The spatial distributions of light rainy days (1 mm 100 mm) are generally concentrated in three regions, Qingyuan, Yangjiang, and Haifeng/Lufeng. The average rainfall amount for rainy days increases form the north to the south of Guangdong, while decreasing as the rainfall intensity increases. The contributions from light, moderate and heavy rain to the total rainfall decreases form the north to the south. The annual rainy days show a decreasing trend in the past 50 years. The light rainy days decreased significantly while the heavy, rainstorm and downpour rainy days increased slightly. The annual total rainfall amount increased over the past 50 years, which was contributed by heavy, rainstorm and downpour rains, while the contribution from light and moderate rains decreased.
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| 关 键 词： | spatiotemporal distribution rainfall amount rainy days rainfall contribution rate |
| 修稿时间： | 2017/11/14 0:00:00 |
SPATIOTEMPORAL DISTRIBUTION CHARACTERISTICS AND VARIATION TRENDS OF HIERARCHICAL PRECIPITATION IN GUANGDONG PROVINCE OVER THE PAST 50 YEARS |
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| LIU Xian-tong,ZHENG Teng-fei,WAN Qi-lin and YU Xin.SPATIOTEMPORAL DISTRIBUTION CHARACTERISTICS AND VARIATION TRENDS OF HIERARCHICAL PRECIPITATION IN GUANGDONG PROVINCE OVER THE PAST 50 YEARS[J].Journal of Tropical Meteorology,2018,24(1):82-91. |
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| Authors: | LIU Xian-tong ZHENG Teng-fei WAN Qi-lin and YU Xin |
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| Abstract: | The climatic characteristics of the precipitation in Guangdong province over the past 50 years were analyzed based on the daily rainfall datasets of 86 stations from 1961 to 2010. The rainfall was divided into five categories according to its intensity, and their spatiotemporal characteristics and variation trends were investigated. The annual rainfall amount was within 1,500 to 2,000 mm over most parts of Guangdong, but substantial differences of rainfall amount and rainy days were found among different parts of the province. There were many rainy days in the dry seasons(October to March), but the daily rainfall amounts are small. The rainy seasons(April to September) have not only many rainy days but also heavy daily rainfall amounts. The spatial distributions of light rainy days(1 mmP 10 mm) and moderate rainy days(10 mmP 25 mm) resemble each other. The heavy rainy days(25 mmP 50 mm),rainstorm days(50 mmP 100 mm) and downpour days(P 100 mm) are generally concentrated in three regions,Qingyuan, Yangjiang, and Haifeng/Lufeng. The average rainfall amount for rainy days increases form the north to the south of Guangdong, while decreasing as the rainfall intensity increases. The contributions from light, moderate and heavy rain to the total rainfall decreases form the north to the south. The annual rainy days show a decreasing trend in the past 50 years. The light rainy days decreased significantly while the heavy, rainstorm and downpour rainy days increased slightly. The annual total rainfall amount increased over the past 50 years, which was contributed by heavy,rainstorm and downpour rains, while the contribution from light and moderate rains decreased. |
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| Keywords: | spatiotemporal distribution rainfall amount rainy days rainfall contribution rate |
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