The coefficient of wind shear at low and high frequencies, from diurnal and seasonal variations to disturbance caused by weather patterns, is subject to temporal fluctuations, but in many cases, the coefficient of wind shear assumed as a constant. This presumption causes major resource management errors, raises instability in projects and potentially affects the ability to control the wind turbines connected to the grid. Hourly average of 10 m wind speed with a standard (50 m) height employed to estimate the WSC with the well-known power equation for the wind profile law. This paper estimates WSC from wind speed data on three sites in Iraq. Monthly wind speed and wind direction changes were determined for these locations. The variations of WSC in one year are (0.23, 0.2, and 0.35) for Al-Shehabi, Al-Najaf, and Al-Fajer respectively. In the summer months (June to September) it is obvious that average wind speeds in all select areas increase while in other seasons they are almost decreasing. The WSC had neural diurnal and monthly variations. Due to the increased temperature at this period of year, WSC has decreased at mid-day, and this is valid for all studied site during the winter and summer days. The stability of atmosphere conditions was determined as stable, stable, and strongly stable for Al-Shehabi, Al-Najaf and Al-Fajer sites respectively.
Remote sensing is a source of up-to-date information. The present study relied on various approaches for gathering information, including descriptive, quantitative and quantitative analytical processes. Particularly, we conducted the analysis of the satellite data ETM + of the satellite Landsat7 and the digital models of Digital Elevation Model of SRTM using ArcGIS9.2. The model depends on primary mathematical equations and constitutes an essential base for GIS applications that rely on data, computer, and software, performing the processes of data entry, analysis and processing. This paper deals with the geomorphological characteristics of a selected study area in Kirkuk province. The characteristics of the water network were determined in terms of direction and the pattern of the water basin using the automated process based on the employment of the applications of the GIS. The study revealed that remote sensing is one of the beneficial techniques for monitoring the changes, geomorphological phenomena, and shapes of the earth's surface, as well as determining their dimensions and slopes through a set of analytical maps by geographic information systems for the study area.
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