27 September 2006 Research of variations in 1961 - 2001 floods and droughts at multiple space and time scales in the Fujian province of China
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Abstract
Using the 1961-2001 rainfall datasets from 25 typical stations in Fujian Province treated by means of Empirical Orthogonal Function (EOF), Fast Fourier Function (FFT), Continuous Wavelet Transform (CWT) and Orthogonal Wavelet Transform (OWT) study is made of sequences of flood/drought indices (Z index) in different seasons. Evidence suggests that 1) the regional flood/drought events have significant 2~3 year periods in 1965-1975 and the 1990s; 2) rainfall amount in the south opposite to that in the north shows pronounced 1- and 3~ 4-yearly periods after the mid 1980s; 3) quantitatively, precipitation occurs in the west to middle in an opposite way to the other parts of the province, with noticeable 1~2 yearly periods in 1985 - 1998, and more appreciable 9~13-yearly periods after the 1980s; 4) within the study period (1961-2001) the drought trend is more apparent in the south (east) than in the north (west), particularly in the 1990s; 5) the regional climate is relatively wetter (drier) in the 1960s and 1980s (1970s and 1990s).
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Jianyun Gao, Jianyun Gao, Zhihong Jiang, Zhihong Jiang, Ziwang Deng, Ziwang Deng, Xiaolan Zhou, Xiaolan Zhou, Rongyan Zhang, Rongyan Zhang, Jiangjin Lv, Jiangjin Lv, "Research of variations in 1961 - 2001 floods and droughts at multiple space and time scales in the Fujian province of China", Proc. SPIE 6298, Remote Sensing and Modeling of Ecosystems for Sustainability III, 62981Q (27 September 2006); doi: 10.1117/12.676866; https://doi.org/10.1117/12.676866
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