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Proceedings Paper

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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Paper 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).

Paper Details

Date Published: 27 September 2006
PDF: 8 pages
Proc. SPIE 6298, Remote Sensing and Modeling of Ecosystems for Sustainability III, 62981Q (27 September 2006); doi: 10.1117/12.676866
Show Author Affiliations
Jianyun Gao, Fujian Specialized Meteorological Observatory (China)
Zhihong Jiang, Nanjing Univ. of Information Science & Technology (China)
Ziwang Deng, Nanjing Univ. of Information Science & Technology (China)
Xiaolan Zhou, Nanjing Univ. of Information Science & Technology (China)
Rongyan Zhang, Fujian Specialized Meteorological Observatory (China)
Jiangjin Lv, Tianjin Municipal Meteorological Bureau (China)


Published in SPIE Proceedings Vol. 6298:
Remote Sensing and Modeling of Ecosystems for Sustainability III
Wei Gao; Susan L. Ustin, Editor(s)

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