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[1]XU Yu,XU Youpeng,WU Yanfei,et al.Temporal and Spatial Patterns of the Meteorological Drought in Chongqing City During Recent 50 Years[J].Research of Soil and Water Conservation,2016,23(06):363-368.

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Temporal and Spatial Patterns of the Meteorological Drought in Chongqing City During Recent 50 Years

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 23 Number of periods: 2016 06 Page number: 363-368 Column: Public date: 2016-12-28

Title:: Temporal and Spatial Patterns of the Meteorological Drought in Chongqing City During Recent 50 Years

Author(s):: XU Yu^1,2, XU Youpeng¹, WU Yanfei², XU Gang², WU Lei¹; 1. School of Geographic and Oceanographic Sciences, Nanjing University, Nanjing 210023, China;
2. School of Geographic Sciences Southwest University, Chongqing, 400715, China

Keywords:: meteorological drought; relative humidity index; drought frequency; drought intensity; Chongqing City

CLC:: P429

DOI:: -

Abstract:: The observed meteorological data of 34 meteorological stations from 1960 to 2009 in Chongqing City of China were collected and a relative humidity index of meteorological drought was used to analyze the temporal and spatial characteristics of drought frequency and intensity. Based on the methods of Inverse Distance Weighted methods on ArcGIS, running t-test and Morlet wavelet analysis, the temporal and spatial patterns of meteorological drought frequency and intensity, mutated years and oscillating periods were revealed. The results showed as follows:(1) the spatial distributions of drought frequency and intensity in whole year, spring, summer, hot season, autumn and winter were different. The drought frequency and intensity were the highest in winter, and the lowest in summer. (2) the abrupt change of drought frequency shifts from more to less level in 1982, and the abrupt change of drought intensity shifts from the weak to heavy level in 1978. And the abrupt change years of drought frequency and intensity are not the same in different durations. (3) the departure sequence vibrations of annual and seasonal drought frequency and intensity are different.

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