[1]赵铭,张雪洋,包玉龙,等.基于2种标准化干旱指数分析秦皇岛近50年干旱状况[J].水土保持研究,2016,23(03):246-251.
　ZHAO Ming,ZHANG Xueyang,BAO Yulong,et al.Analysis of Drought Conditions in Qinhuangdao City in Recent 50 Years Based on Two Kinds of Standardized Drought Indices[J].Research of Soil and Water Conservation,2016,23(03):246-251.
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基于2种标准化干旱指数分析秦皇岛近50年干旱状况

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 23 期数: 2016年03期 页码: 246-251 栏目: 出版日期: 2016-06-28
Title:
Analysis of Drought Conditions in Qinhuangdao City in Recent 50 Years Based on Two Kinds of Standardized Drought Indices
作者:
赵铭1, 张雪洋1, 包玉龙1, 赵福年2
1. 秦皇岛市气象局, 河北 秦皇岛 066000;
2. 中国气象局 兰州干旱气象研究所, 中国气象局 干旱气候变化与减灾重点开放实验室, 甘肃省干旱气候变化与减灾重点实验室, 兰州 730020
Author(s):
ZHAO Ming1, ZHANG Xueyang1, BAO Yulong1, ZHAO Funian2
1. Qinhuangdao Meteorological Administration, Qinhuangdao, Hebei 066000, China;
2. Key Open Laboratory of Arid Climate Change and Disaster Reduction of CMA, Institude of Arid Meteorology, China Meteorological Administration, Lanzhou 730020, China
关键词:
干旱; 标准化降水指标(SPI); 标准化降水蒸散指标(SPEI); 秦皇岛市
Keywords:
drought; standardized precipitation index; standardized precipitation evapotranspiration index; Qinhuangdao City
分类号:
S161
摘要:
为了分析SPEI是否相对于SPI更适合于气候变暖背景下秦皇岛的干旱监测与评估，为更精确地诊断该区干旱发生状况提供依据，以河北秦皇岛1964—2014年逐日降水及温度资料为基础，分析比较标准化降水指标（SPI）和标准化降水蒸散指标（SPEI）对秦皇岛干旱监测的差异及秦皇岛地区近50年干旱变化趋势。结果表明：50年来秦皇岛干旱发生的频次逐渐增多，且干旱程度也较过去有所加重，春季、夏季、冬季呈干旱化趋势，秋季呈增湿趋势；两个指数在同一季节指示的干湿状况演变趋势是一样的；1989年以前，秦皇岛市气温距平值基本为负值，在这期间SPI与SPEI数值变动趋势较为一致且在发生干旱的年份SPI与SPEI数值之间差异不大，但在1989年以后，随着秦皇岛市气温距平值由负转为连续多年正值，两个指数差异增大，SPEI在监测到干旱发生时，干旱程度较SPI监测的结果更重也更接近实际情况，所以得出SPEI更能有效地反映出全球变暖背景下秦皇岛干旱发生发展情况。
Abstract:
In order to analyze whether SPEI relative to the SPI is more suitable for the context of Qinhuangdao City drought monitoring and evaluation under the background of climate warming, also for more precise diagnosis of the drought conditions, daily precipitation and temperature data from 1964 to 2014 in Qinhuangdao City Hebei Province were used to analyze and compare the difference between SPI and SPEI in their monitoring of the drought conditions and drought change tendency in nearly 50 years. The results show that the frequency of drought in nearly 50 years of Qinhuangdao City is increasing and the degree of drought becomes more serious than before. The drying trend was observed in spring, summer and winter, humidifying trend was found in autumn; two indices in the same season instructions of dry and wet condition evolution tendency are the same. Before 1989, the temperature anomaly of Qinhuangdao City was basically negative, during this period, the trend of SPI and SPEI values was consistent and the difference between SPI and SPEI was not significant in the drought years. But after 1989, with the shift of the temperature anomaly of Qinhuangdao City from negative to positive value, the difference of the two indices increased, when the drought occurred, the results of the SPEI monitoring were more serious than the SPI monitoring and closer to the actual situation, Therefore, SPEI can effectively reflect the development of drought in Qinhuangdao City in the context of global warming.

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备注/Memo

收稿日期:2015-06-15;改回日期:2015-06-30。
作者简介:赵铭(1986-)男,河北秦皇岛人,工程师,主要从事农业气象及海洋气象灾害研究。E-mail:zhaoming8677@163.com

更新日期/Last Update: 1900-01-01