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Position: Home > Articles > Climatic Characteristics of High Temperature Days and Heatwaves:Hainan Island in Recent 50 Years Chinese Agricultural Science Bulletin 2017 (22) 107-112

近50年海南岛高温日数和热浪的气候特征

作  者:
邢彩盈;张京红;吴胜安
单  位:
海南省气候中心;海南省南海气象防灾减灾重点实验室
关键词:
海南岛;高温日数;高温热浪;气候特征
摘  要:
利用1966—2015年海南岛18个气象站日最高气温资料,分析了海南岛高温日数、热浪频次和热浪强度的时空分布特征。结果表明:(1)海南岛年高温日数、不同等级热浪频次和热浪强度呈西北多东南少的空间分布,高值区集中在西北部,低值区分布在沿海地区。其中,昌江年高温日数最多、热浪频次并列最多、强度最强;东方和三亚几乎未出现过热浪。(2)近50年海南岛以持续3~4天轻度热浪为主,且全岛平均年高温日数、热浪总频次总体呈显著增长趋势。其中,轻度和中度热浪频次呈缓慢增长趋势,重度热浪频次变化不明显。除重度热浪外,2003年后年高温日数和其他等级热浪频次大多处于偏多年份。年热浪强度增长趋势不显著,但2000年后明显增强。(3)区域变化特征分布不均匀。大部分地区的年高温日数、年热浪和轻度热浪频次增长趋势显著,但年热浪强度、中度和重度热浪频次变化趋势的空间分布不均匀,且绝大多数地区趋势不显著。
译  名:
Climatic Characteristics of High Temperature Days and Heatwaves:Hainan Island in Recent 50 Years
作  者:
Xing Caiying;Zhang Jinghong;Wu Sheng'an;Hainan Climate Center;Key Laboratory of South China Sea Meteorological Disaster Prevention and Mitigation of Hainan Province;
关键词:
Hainan Island;;high temperature days;;heatwaves;;climatic characteristics
摘  要:
Based on daily maximum temperature data of 18 meteorological stations in Hainan Island during1966-2015,the temporal and spatial distribution characteristics of high temperature days,frequency and intensity of heatwaves were analyzed.The results showed that:(1)there were more spatial distribution of annual high temperature days,frequency of different-class heatwaves and heatwave intensity in the northwest than in the southeast,namely,the high-value regions concentrated in the northwest,while the low-value regions distributed in coastal areas,thereinto,annual high temperature days in Changjiang was the most,heatwave frequency was the highest,heatwave intensity was the strongest;there was almost no heatwaves in Dongfang and Sanya;(2)in recent 50 years,light heatwaves with 3-4 days duration was the main type in Hainan Island,and average high temperature days and total heatwave frequency showed an overall increasing trend,thereinto,frequency of light and moderate heatwaves showed a slow increasing trend,variation of severe heatwave frequency was not obvious;except severe heatwaves,high temperature days and frequency of other class heatwaves were more after 2003;the increase trend of heatwave intensity was non-significant,but it increased obviously after 2000;(3)regional variation characteristics presented a non-uniform distribution,the annual high temperature days,frequency of annual heatwaves and light heatwaves in most areas had a significant increasing trend,however,trends of annual heatwave intensity,moderate and severe heatwave frequency presented a non-uniform distribution and were non-significant in most areas.

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