Spatial and Temporal Characteristics of Drought and Flood in Quanzhou Based on Standardized Precipitation Index (SPI) in Recent 55 Years

A 55-year analysis of drought and flood patterns in Quanzhou, China, reveals distinct periodic variations with no significant long-term trends. Frequent droughts occurred during 1963-1972, 1977-1986, and 2009-2011, while floods were prevalent in 1961-1962, 1972-1975, 1990-1992, and 1997-2007. The study used the Standardized Precipitation Index (SPI), Empirical Orthogonal Function (EOF), and Rotated EOF to analyze monthly precipitation data from six meteorological stations. While droughts and floods generally followed consistent trends across Quanzhou, regional differences were noted in the northwest mountainous, middle semi-mountainous, and southeast coastal areas. Seasonal rainfall patterns also varied, with Nan'an and Anxi consistently experiencing higher precipitation but differing in dry zones: Yongchun and Dehua in spring, Chongwu and Jinjiang in summer, Chongwu in autumn, and Dehua and Chongwu in winter.

Liu, D., You, J., Xie, Q., Huang, Y., & Tong, H. (2018). Spatial and Temporal Characteristics of Drought and Flood in Quanzhou Based on Standardized Precipitation Index (SPI) in Recent 55 Years. Journal of Geoscience and Environment Protection, 06(08), 25–37. https://doi.org/10.4236/gep.2018.68003