Development of mass-transfer evaporation model for Lake Nasser, Egypt

Evaporation from free water surface is considered a very important constituent in both the energy and hydrologic cycles. Precise measurement of evaporation from the free water surface is almost impossible. This is why we need a calculation model for free water evaporation. In this study, a simple ma...

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Autores principales:	Mohamed El-Sayed El-Mahdy, Mohamed S. Abbas, Hassan M. Sobhy
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	equation evaporation lake nasser mass-transfer model Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350
Acceso en línea:	https://doaj.org/article/4d3935d628e54afcb84740905a383862
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spelling	oai:doaj.org-article:4d3935d628e54afcb84740905a3838622021-11-05T18:41:03ZDevelopment of mass-transfer evaporation model for Lake Nasser, Egypt2040-22442408-935410.2166/wcc.2019.116https://doaj.org/article/4d3935d628e54afcb84740905a3838622021-02-01T00:00:00Zhttp://jwcc.iwaponline.com/content/12/1/223https://doaj.org/toc/2040-2244https://doaj.org/toc/2408-9354Evaporation from free water surface is considered a very important constituent in both the energy and hydrologic cycles. Precise measurement of evaporation from the free water surface is almost impossible. This is why we need a calculation model for free water evaporation. In this study, a simple mass-transfer evaporation model was developed to be applicable over Lake Nasser in the hyper-arid region located in the south of Egypt. Measured meteorological data (2011–2014) at two stations, Aswan and Abu-Simbel, were used to calculate free water surface evaporation using Priestly–Taylor equation. Priestly–Taylor equation was used because it is the most appropriate equation for Lake Nasser evaporation according to the literature. Results from this model were used to develop a simple mass-transfer evaporation model. The statistical analysis for both calibration and validation periods were very good. The slope of the regression line is about 0.9, with a coefficient of determination of 0.98. The t value is 0.6, at p value of 0.544, which is much greater than 0.05. The developed model could be used with confidence at Aswan meteorological station or on the average of the two meteorological stations, while it should be used carefully on Abu-Simbel meteorological station.Mohamed El-Sayed El-MahdyMohamed S. AbbasHassan M. SobhyIWA Publishingarticleequationevaporationlake nassermass-transfermodelEnvironmental technology. Sanitary engineeringTD1-1066Environmental sciencesGE1-350ENJournal of Water and Climate Change, Vol 12, Iss 1, Pp 223-237 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	equation evaporation lake nasser mass-transfer model Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350
spellingShingle	equation evaporation lake nasser mass-transfer model Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Mohamed El-Sayed El-Mahdy Mohamed S. Abbas Hassan M. Sobhy Development of mass-transfer evaporation model for Lake Nasser, Egypt
description	Evaporation from free water surface is considered a very important constituent in both the energy and hydrologic cycles. Precise measurement of evaporation from the free water surface is almost impossible. This is why we need a calculation model for free water evaporation. In this study, a simple mass-transfer evaporation model was developed to be applicable over Lake Nasser in the hyper-arid region located in the south of Egypt. Measured meteorological data (2011–2014) at two stations, Aswan and Abu-Simbel, were used to calculate free water surface evaporation using Priestly–Taylor equation. Priestly–Taylor equation was used because it is the most appropriate equation for Lake Nasser evaporation according to the literature. Results from this model were used to develop a simple mass-transfer evaporation model. The statistical analysis for both calibration and validation periods were very good. The slope of the regression line is about 0.9, with a coefficient of determination of 0.98. The t value is 0.6, at p value of 0.544, which is much greater than 0.05. The developed model could be used with confidence at Aswan meteorological station or on the average of the two meteorological stations, while it should be used carefully on Abu-Simbel meteorological station.
format	article
author	Mohamed El-Sayed El-Mahdy Mohamed S. Abbas Hassan M. Sobhy
author_facet	Mohamed El-Sayed El-Mahdy Mohamed S. Abbas Hassan M. Sobhy
author_sort	Mohamed El-Sayed El-Mahdy
title	Development of mass-transfer evaporation model for Lake Nasser, Egypt
title_short	Development of mass-transfer evaporation model for Lake Nasser, Egypt
title_full	Development of mass-transfer evaporation model for Lake Nasser, Egypt
title_fullStr	Development of mass-transfer evaporation model for Lake Nasser, Egypt
title_full_unstemmed	Development of mass-transfer evaporation model for Lake Nasser, Egypt
title_sort	development of mass-transfer evaporation model for lake nasser, egypt
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/4d3935d628e54afcb84740905a383862
work_keys_str_mv	AT mohamedelsayedelmahdy developmentofmasstransferevaporationmodelforlakenasseregypt AT mohamedsabbas developmentofmasstransferevaporationmodelforlakenasseregypt AT hassanmsobhy developmentofmasstransferevaporationmodelforlakenasseregypt
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Development of mass-transfer evaporation model for Lake Nasser, Egypt

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