TITLE:
Spatial and Temporal Characteristics of Drought and Flood in Quanzhou Based on Standardized Precipitation Index (SPI) in Recent 55 Years
AUTHORS:
Dehe Liu, Jingfei You, Qijie Xie, Yuanyuan Huang, Huajun Tong
KEYWORDS:
Standardized Precipitation Index, Drought and Flood, Empirical Orthogonal Function (EOF), Rotated Empirical Orthogonal Function (REOF)
JOURNAL NAME:
Journal of Geoscience and Environment Protection,
Vol.6 No.8,
August
3,
2018
ABSTRACT: To analyze the characteristics of drought and flood variations in Quanzhou
during recent 55 years, the standardized precipitation index (SPI) and Empirical
Orthogonal Function (EOF) and Rotated Empirical Orthogonal Function
(REOF) were calculated by using the monthly precipitation data from 6
meteorological bureaus across Quanzhou for 1960-2014. Results showed that:
1) During 1960-2014, the drought and flood showed Periodic variation characteristics
in Quanzhou, the specific period of frequent drought was
1963-1972, 1977-1986 and 2009-2011, and the specific period of frequent
flood was 1961-1962, 1972-1975, 1990-1992 and 1997-2007; the drought and
flood did not have significant tendency of variation in Spring and Summer,
and the drought and flood showed a non-significant downward trend in Autumn
and Winter. 2) The drought and flood variation had relatively consistent
trend in Quanzhou, but there was a big difference on the northwest
mountainous area, the middle semi-mountainous area and the southeast
coast area in some periods. 3) The precipitation cell and distribution in every
season were Nan’an and Anxi, but there was a big difference in rainfall less
area: it was Yongchun and Dehua in Spring, Chongwu and Jinjiang in Summer,
Chongwu in Autumn, Dehua and Chongwu in Winter.