Complex problem solving and their visualization in the Earth sciences is carried out exclusively on the HPC and grid computing platforms today. This issue deals with scientific community in the form of resource sharing in the thematic virtual organization (VO). New Technology Platform (Grid) and forms of organization (VO) increase efficiency and perspective in scientific research and development of new applications. This book contains the most popular and useful articles that have been presented at various topic-related scientific projects and conferences. It presents a collection of the state-of-the-art applications and their implementations on the grid infrastructure platform, like various prediction models and simulations in meteorology, prediction of waves and storms on sea, etc.