[1]CAI Dao-ming,YAN Tie-ping,LIAO Wei,et al.Analysis on Spatial-Temporal Characteristics of Precipitaiotn During 1957-2009 in Hubei Province[J].Research of Soil and Water Conservation,2010,17(06):237-241.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
17
Number of periods:
2010 06
Page number:
237-241
Column:
Public date:
2010-12-20
- Title:
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Analysis on Spatial-Temporal Characteristics of Precipitaiotn During 1957-2009 in Hubei Province
- Author(s):
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CAI Dao-ming1, YAN Tie-ping2, LIAO Wei2, XIONG An-yuan3, WU Xi1, WU Yi-jin1
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1. School of Urban and Environmental Sciences, Huazhong Normal University, Wuhan 430079, China;
2. Soil and Water Conservation Supervision and Monitoring Center, Wuhan 430069, China;
3. National Meteorological Informantion Centre, Beijing 100081, China
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- Keywords:
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Hubei province; annual precipitation; EOF; REOF; wavelet analysis
- CLC:
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P426.614
- DOI:
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- Abstract:
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Based on annual precipitation data over 21 stations during 1957-2009 in Hubei province, the spatial-temporal characteristics are studied by applying the methods of EOF, REOF and wavelet analysis. The most typical pattern of annual precipitation is the dry-wet consistency. Other typical patterns show the dry-wet difference. For example, it is wet (or dry) in north and dry (or wet) in south, wet (or dry) in center and dry (or wet) in the surrounding area, wet (or dry) in northeast and dry(or wet) in the southwest. The first six rotated loading vector fields represent six principal precipitation anomaly areas: Northwest Hubei, North Hubei, Northeast Hubei, Southeast Hubei, Midsouth Hubei, Southwest Hubei. By using the wavelet analysis on the periodicity and the mutation of precipitation during the rainy season in Hu’’nan, we found that there were 3-year, 7-year and 14-year time scales and main periods of precipitation during the rainy season, and the precipitation during the rainy season in Hubei may will decrease gradually and switch to a dry period in the near future.