Subscribe Now Subscribe Today
Science Alert
 
FOLLOW US:     Facebook     Twitter
Blue
   
Curve Top
Journal of Applied Sciences
  Year: 2008 | Volume: 8 | Issue: 22 | Page No.: 4097-4104
DOI: 10.3923/jas.2008.4097.4104
 
Facebook Twitter Digg Reddit Linkedin StumbleUpon E-mail
Calibrating Priestley-Taylor Model to Estimate Open Water Evaporation under Regional Advection Using Volume Balance Method-Case Study: Chahnimeh Reservoir, Iran
P. Daneshkar Arasteh and M. Tajrishy

Abstract:
The objective of this study is to calibrate Priestley-Taylor (PT) model for estimating open water evaporation from an arid region reservoir called Chahnimeh. Chahnimeh Reservoir which is situated in the Sistan area in the southeast of Iran is being affected by regional energy advection during May to October. Therefore, common models of open water evaporation estimation such as PT require calibration. PT method was calibrated for Chahnimeh Reservoir using a volume balance method. Results showed that PT coefficient, αPT, as a constant over the year varies between 2.47±0.09 and 1.20±0.03 for two different hydrologic conditions of dry and wet. It means that there is also an intra-annular variation in αPT. Calibration of PT model also showed that αPT is a time dependant variable and varies monthly. In other word there is an inter-annular variation. Inter-annular variation of αPT showed that this coefficient varies from 1.56 to 3.16 against 0.67 to 1.95 for dry and wet conditions, respectively.
PDF Fulltext XML References Citation Report Citation
How to cite this article:

P. Daneshkar Arasteh and M. Tajrishy, 2008. Calibrating Priestley-Taylor Model to Estimate Open Water Evaporation under Regional Advection Using Volume Balance Method-Case Study: Chahnimeh Reservoir, Iran. Journal of Applied Sciences, 8: 4097-4104.

DOI: 10.3923/jas.2008.4097.4104

URL: https://scialert.net/abstract/?doi=jas.2008.4097.4104

 
COMMENT ON THIS PAPER
 
 
 

 

 
 
 
 
 
 
 
 
 

 
 
 
 
 
 
 

       

       

Curve Bottom