Document Details

Document Type : Article In Journal 
Document Title :
Assessment and Error Analysis of the Energy Balance-Bowen Ratio Method for Estimation of Evaporation in an Arid Climate
تقييم وتحليل أخطاء معادلة توازن الطاقة لتقدير التبخر في مناخ جاف
 
Document Language : English 
Abstract : An energy balance-Bowen ratio equation has been used for the estimation of evaporation at Hada El Sham, 120km NE of Jeddah, an area of potential agriculture activity. Error analyses were made for the Bowen ratio and evaporation terms as obtained from the energy balance equation. In order to test the sensitivity of the method, two contrasting days were used; one was a wet and cloudy day in winter, after heavy rainfall and thunder activity for 24 hours. The other day was dry in spring, with clear sky and maximum solar radiation input. Extensive surface measurements were carried out with hourly temperature and humidity profiles and surface radiative flux components. The method proved sensitive to an increase in the soil water content after the rainy day. The estimated error in evaporation was about 10%, increases to 16% as the surface gets drier. The method is subjected to large errors when the error in the Bowen ratio reaches 25%. 
ISSN : 1319-1039 
Journal Name : Meteorology, Environment and Arid Land Agriculture Sciences Journal 
Volume : 8 
Issue Number : 1 
Publishing Year : 1417 AH
1997 AD 
Article Type : Article 
Added Date : Sunday, July 8, 2012 

Researchers

Researcher Name (Arabic)Researcher Name (English)Researcher TypeDr GradeEmail
محمد أيمن عبد اللهABDULLAH, MOHAMMED AYMANInvestigatorDoctorate 

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