Real time and spatially distributed Ta (air temperature) data are desired for many applications. Ts (land surface temperature) derived from remote sensors has been used to estimate Ta in previous studies. Exploring MODIS Aqua Ts and station measured daily maximum and minimum Ta over east Africa, we found that Ts did not agree well with Ta during the day (MAE (Mean Absolute Error) = 6.9 ± 5.0 ◦C...

Head-on collision of two solitary waves in the presence linear shear currents is studied by use High-Level Green–Naghdi (HLGN) theory. The finite difference method used to solve HLGN model time-domain simulation. initial values are obtained steady solution currents. Shear with different velocities considered assess their effect on solitary-wave collision. Three aspects head-on process current s...

[1] We investigate numerically the evolution of crustal and lithospheric thickness, thermal structure, topography, and strain rate of the Tibetan Plateau through time, using the thin viscous sheet approach. We show that lithospheric mantle must have been removed from beneath Tibet to explain the present surface elevation and lack of regional surface slope. In the absence of this removal, the mo...

Maximum efficiency of surfaces that exploit solar energy, including Photovoltaic Panels and Thermal collectors, is achieved by installing them in a certain inclination (tilt). Most common approach to select an angle equal the location’s latitude. This based on astronomical calculations sun’s position throughout year but ignores meteorological factors. Cloud coverage aerosols tend change direct ...

This study modeled the effects of hydraulic dredging on the lower Karun river in Ahvaz range to thevillage is Farsyan . using software 4.1 HEC-RAS, one-dimensional model of the flow field wassimulated . After entering the information into the model and its calibration based on the selected,design flow model was implemented to extract the water surface elevation levels and spreading areaswere me...

In this paper we study, via variational methods, the problem of scattering of time harmonic acoustic waves by an unbounded sound soft surface. The boundary ∂D is assumed to lie within a finite distance of a flat plane and the incident wave is that arising from an inhomogeneous term in the Helmholtz equation whose support lies within some finite distance of the boundary ∂D. Via analysis of an eq...