IOSR-JAP   Volume-5 ~ Issue-4 ~ Nov–Dec 2013

Paper Type	:	Research Paper
Title	:	Spatial and Temporal Variation of Rainfall in IRAQ
Country	:	Iraq
Authors	:	Dr. Waleed I. AL-Rijabo; Hanee M. Salih
	:	10.9790/4861-0540107

Abstract: Rainfall in Iraq is characterized by unorganized distribution of both spatial and temporal. The annual, seasonal and monthly mean rainfall varies considerly with years. The recorded rainfall quantity in the different meteorological stations varies from location to another according to sea surface elevation and the geographical position of meteorological stations.
Variation of rainfall with space and time were studied in Iraq for the period (1980-2010) using 22 meteorological stations. Mean monthly, seasonally and annually values of rainfall were found in different meteorological stations. Winter months represent about (42-56) % of total annual rainfall. The annual variability of rainfall in all these stations is high. Isohyetal method was used to estimate the mean monthly values of rainfall in Iraq. Simple and Multiple Regression Equations were found in Mosul, Baghdad and Basrah stations between rainfall and different meteorological elements.

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Paper Type	:	Research Paper
Title	:	Estimation of clearness index from different meteorological parameters in IRAQ
Country	:	Iraq
Authors	:	Dr. Waleed I. AL-Rijabo, Zahraa M. H.
	:	10.9790/4861-0540816

Abstract: The aim of this paper is to estimate the mean monthly values of clearness index in five meteorological stations in Iraq (Mosul , Kirkuk , Rutba , Baghdad , Nasiriya) for the period (1970-2000) using different meteorological parameters. Five different models (Linear , Quadratic , Logarithmic , Linear logarithmic , Power) were used to estimate clearness index. The performance of this regression models were evaluated by comparing the calculated clearness index and the measured clearness index . Several statistical tests were used to control the validation and goodness of the regression models in terms of correlation coefficient, coefficient of determination , Mean absolute error and root mean square error . Results showed that Linear model between (KT & n/N) and between (KT & Rainfall) were the best fit in all stations. Quadratic model were the best fit between (KT & cloudiness) , and power model were the best fit between (KT &Evaporation). Linear model and Quadratic model were the best fit between (KT & RH) , while power model , Quadratic model , and Linear model were the best fit between (KT & Tmean).

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Paper Type	:	Research Paper
Title	:	The Study of Heat Generation and Viscous Dissipation on Mhd Heat And Mass Diffusion Flow Past A Surface
Country	:	Nigeria
Authors	:	K. Bhagya Lakshmi, G. S. S. Raju, P. M. Kishore, N.V.R.V. Prasada Rao
	:	10.9790/4861-0541728

Abstract: The present work is devoted to the numerical study of magneto hydrodynamic (MHD) natural convection flow of heat and mass transfer past a plate taking into account viscous dissipation and internal heat generation. The governing equations and the associated boundary conditions for this analysis are made non dimensional forms using a set of dimensionless variables. Thus, the non dimensional governing equations are solved numerically using finite difference method Crank-Nicolson's scheme. Numerical outcomes are found for different values of the magnetic parameter, Modified Grashof number, Prandtl number, Eckert number, heat generation parameter and Schmidt number for the velocity and the temperature within the boundary layer as well as the skin friction coefficients and the rate of heat and mass transfer along the surface. Results are presented graphically with detailed discussion.

Keywords: MHD, heat generation, free convection, viscous dissipation, finite difference method.

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