Solar Irradiance Calculator V0.1

The module estimates the spatial distribution of irradiance value (W/mq) in a specific area that has elements of complexity, e.g. inhomogeneous morphology of the terrain, buildings, vegetation. The input elements are the terrain surface and building models which can be added by the user via a specific user interface. The module surveys the earth surface and creates three representations of irradiance: (i) on bare ground, (ii) on roofs and (iii) on both. These analytical surfaces are calculated using a model which considers the angle of incidence, atmospheric factors, and other items that are entered at the user level. With a control panel user can create his scenario. He can set: - date - time-zone - clouds percentage - type of prevalent material for reflection - dimension of cell in the grid analysis - characteristics of the building like dimension (lenght, width height), the type of roof (flat, shed, gamble or hipped), aspect and slope. When the scenario is ready the model calculates the sun position, computes the object in the beam of light path to create shadow of terrain on ground or on buildings, shadows of the building on the ground or on other buildings. The result are three analytic surface of solar irradiance.

This demo is developed with Nasa World Wind 1.5, Java 7, Eclipse 4.2 Juno on Windows 64-bit system.