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Classification-Based Spatiotemporal Variations of Pan Evaporation Across the Guangdong Province, South China

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  • Yanhu He
  • Kairong Lin
  • Xiaohong Chen
  • Changqing Ye
  • Lei Cheng

Abstract

Change in pan evaporation (E pan ) has evoked general scientific interest because it involves both climatic and hydrological effects. The enhanced greenhouse effect may be the casual factor, although the mechanism still needs to be further confirmed. Based on meteorological data (Pan evaporation, rainfall, air temperature, sunshine duration, relative humidity, wind speed, cloud cover, and water vapor pressure) of 85 sites from 1957 to 2006, classification-based spatiotemporal variations of pan evaporation and possible causes were studied in the Guangdong province, South China (with a coastline of 8,500 km), which is one of China’s most prosperous provinces with the largest population. The Guangdong province was spatially divided into 4 parts, i.e., Southwest part, East part, Central part, and Northwest part, according to E pan and seven other climatic factors based on cluster analysis. Results showed that pan evaporation in this study area declined −3.35 mm year −1 on average in time, and mainly decreased from the seashore area to the inland area in space. Results also showed that all the climatic factors can contribute to change in E pan , but their contributions were different over the space. Sunshine duration (SD) and wind speed (WS) had a positive correlation with E pan , while rainfall (R) and air temperature (T a ) were negatively correlated to E pan . Among all the 7 climatic factors, SD was identified as the dominant driving force of E pan change in the Guangdong province. Copyright Springer Science+Business Media Dordrecht 2015

Suggested Citation

  • Yanhu He & Kairong Lin & Xiaohong Chen & Changqing Ye & Lei Cheng, 2015. "Classification-Based Spatiotemporal Variations of Pan Evaporation Across the Guangdong Province, South China," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 29(3), pages 901-912, February.
    • Handle: RePEc:spr:waterr:v:29:y:2015:i:3:p:901-912
    DOI: 10.1007/s11269-014-0850-5
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    References listed on IDEAS

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    1. Sungwon Kim & Jalal Shiri & Ozgur Kisi, 2012. "Pan Evaporation Modeling Using Neural Computing Approach for Different Climatic Zones," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 26(11), pages 3231-3249, September.
    2. Ashoke Basistha & D. Arya & N. Goel, 2008. "Spatial Distribution of Rainfall in Indian Himalayas – A Case Study of Uttarakhand Region," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 22(10), pages 1325-1346, October.
    3. Sungwon Kim & Jalal Shiri & Ozgur Kisi & Vijay Singh, 2013. "Estimating Daily Pan Evaporation Using Different Data-Driven Methods and Lag-Time Patterns," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 27(7), pages 2267-2286, May.
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    Cited by:

    1. Yanhu He & Jie Yang & Xiaohong Chen & Kairong Lin & Yanhui Zheng & Zhaoli Wang, 2018. "A Two-stage Approach to Basin-scale Water Demand Prediction," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 32(2), pages 401-416, January.
    2. Kairong Lin & Youqin Lin & Pan Liu & Yanhu He & Xinjun Tu, 2016. "Considering the Order and Symmetry to Improve the Traditional RVA for Evaluation of Hydrologic Alteration of River Systems," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 30(14), pages 5501-5516, November.
    3. Jie Zhao & Zongxue Xu & Vijay P. Singh & Depeng Zuo & Mo Li, 2016. "Sensitivity of Potential Evapotranspiration to Climate and Vegetation in a Water-Limited Basin at the Northern Edge of Tibetan Plateau," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 30(13), pages 4667-4680, October.

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