Simulation of Annual Precipitation Based onGeographic Factors in Fujian Province

WANG Ya-qiong; LU Yi-min

doi:10.11988/ckyyb.20160553

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Journal of Changjiang River Scientific Research Institute ›› 2017, Vol. 34 ›› Issue (10) : 11-16. DOI: 10.11988/ckyyb.20160553

WATER RESOURCES AND ENVIRONMENT

Simulation of Annual Precipitation Based onGeographic Factors in Fujian Province

WANG Ya-qiong¹, LU Yi-min²

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Abstract

The aim of this research is to estimate the spatial distribution of annual mean precipitation in Fujian Province, hence offering scientific basis for industrial and agricultural production, natural disaster forecasting, and eco-environmental construction. According to precipitation data at 35 meteorological stations in Fujian province and its surrounding areas, the correlation between annual precipitation and four geological factors respectively (elevation, latitude, distance to sea shore, and slope gradient) were analyzed. Furthermore, a model was established in association with the multiple regression equation and the Kriging interpolation to estimate the spatial distribution of annual mean precipitation in Fujian Province from 1951 to 2011. The model reflects the general trend of the spatial distribution of annual precipitation, and also highlights the difference of precipitation in local areas. Results revealed that the relative average error of the fitted stations is 3.4%, and the mean absolute error is 56 mm; while the mean absolute error of the precision verification result is 3.6%. The annual precipitation displayed a wave-like rising trend from the southeast coast to the northwest mountains.

Key words

geographical factors / annual precipitation / regression fitting / Kriging interpolation / spatial distribution / Fujian Province

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WANG Ya-qiong, LU Yi-min. Simulation of Annual Precipitation Based onGeographic Factors in Fujian Province[J]. Journal of Changjiang River Scientific Research Institute. 2017, 34(10): 11-16 https://doi.org/10.11988/ckyyb.20160553

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