Stefan Emeis – författare

Dieses Buch bietet eine Einführung in die meteorologischen Randbedingungen für die Stromerzeugung aus Wind - sowohl an Land als auch auf See - und liefert meteorologische Informationen für die Planung und den Betrieb dieser wichtigen erneuerbaren Energiequelle. Es umfasst die Herleitung von Windgesetzen und Beschreibungen von Windprofilen, insbesondere oberhalb der logarithmischen bodennahen Schicht, und behandelt Winde über komplexem Gelände und nächtliche Low-Level-Jets. Diese aktualisierte und erweiterte zweite Auflage enthält neue Kapitel, die sich mit der Effizienz großer Windparks und deren Nachläufen sowie mit der Offshore-Windenergie befassen.

This book offers an introduction to the meteorological boundary conditions for power generation from wind – both onshore and offshore, and provides meteorological information for the planning and running of this important renewable energy source. It includes the derivation of wind laws and wind-profile descriptions, especially those above the logarithmic surface layer, and discusses winds over complex terrains and nocturnal low-level jets. This updated and expanded second edition features new chapters devoted to the efficiency of large wind parks and their wakes and to offshore wind energy.

The book presents a comprehensive overview of the current state-of-the-art in the atmospheric boundary layer (ABL) research. It focuses on experimental ABL research, while most of the books on ABL discuss it from a theoretical or fluid dynamics point of view.

Experimental ABL research has been made so far by surface-based in-situ experimentation (tower measurements up to a few hundred meters, surface energy balance measurements, short aircraft experiments, short experiments with tethered balloons, constant-level balloons, evaluation of radiosonde data). Surface flux measurements are also discussed in the book. Although the surface fluxes are one of the main driving factors for the daily variation of the ABL, an ABL description is only complete if its vertical structure is analyzed and determined. Satellite information is available covering large areas, but it has only limited temporal resolution and lacks sufficient vertical resolution. Therefore, surface-based remote sensing is a large challenge to enlarge the database for ABL studies, as it offers nearly continuous and vertically highly resolved information for specific sites of interest.

Considerable progress has been made in the recent years in studying of ground-based remote sensing of the ABL. The book discusses such new subjects as micro-rain radars and the use of ceilometers for ABL profiling, modern small wind lidars for wind energy applications, ABL flux profile measurements, RASS techniques, and mixing-layer height determination.