Research Article Open Access

Transfer Function-Noise Modeling of the Dynamic Relationship between Botswana's Monthly Maximum Temperature and Evaporation

Oliver Moses1, Edward Lungu2 and Bhagabat Prasad Parida1
  • 1 University of Botswana, Botswana
  • 2 Botswana International University of Science and Technology, Botswana

Abstract

In Botswana, the rate of evaporation over open water surfaces is high because the country is characterised by hot and semi arid climatic conditions. The purpose of the study is to investigate the correlation between Botswana's monthly maximum temperature and evaporation and between monthly maximum wind speed and evaporation, for the stations Gaborone, Francistown and Maun and to fit transfer function-noise models between the highly correlated elements. The data were obtained from the Botswana Department of Meteorological Services. Cross correlation analysis revealed that for the selected weather stations, monthly maximum evaporation is much more strongly correlated to monthly maximum temperature than to monthly maximum wind speed. Monthly maximum temperature and evaporation were modelled with transfer function-noise models. The results of the study are crucial mainly to those in water management, agriculture and other similar industries.

American Journal of Environmental Sciences
Volume 13 No. 2, 2017, 138-148

DOI: https://doi.org/10.3844/ajessp.2017.138.148

Submitted On: 14 April 2016 Published On: 20 March 2017

How to Cite: Moses, O., Lungu, E. & Parida, B. P. (2017). Transfer Function-Noise Modeling of the Dynamic Relationship between Botswana's Monthly Maximum Temperature and Evaporation. American Journal of Environmental Sciences, 13(2), 138-148. https://doi.org/10.3844/ajessp.2017.138.148

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Keywords

  • Botswana
  • Monthly Maximum Evaporation
  • Monthly Maximum Temperature
  • Transfer Function-Noise Models