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[1]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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Analysis of Drought Conditions in Qinhuangdao City in Recent 50 Years Based on Two Kinds of Standardized Drought Indices

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 23 Number of periods: 2016 03 Page number: 246-251 Column: Public date: 2016-06-28

Title:: Analysis of Drought Conditions in Qinhuangdao City in Recent 50 Years Based on Two Kinds of Standardized Drought Indices

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

Keywords:: drought; standardized precipitation index; standardized precipitation evapotranspiration index; Qinhuangdao City

CLC:: S161

DOI:: -

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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