This book shows the state of the art in Europe on a very new discipline, Space Weather. This discipline lies at the edge between science and industry. This book reflects such a position with theoretic papers and applicative papers as well. It is divided into five chapters. Each chapter starts with a short introduction, which shows the coherence of a given domain. Then, four to five contributions written by the best specialists in Europe give detailed hints of a hot topic in space weather. From the reading of this book, it becomes evident that space weather is a living discipline, full of promises and already full of amazing realizations. The strength of Europe is clear through the book, but it is also clear that this discipline is worldwide. This book shows the state-of-the-art in Europe on a very new discipline, Space Weather. This book reflects such a position with theoretic papers and applicative papers as well. Then, four to five contributions written by the best specialists in Europe give detailed hints of a hot topic in space weather. Introduction ix Session 1: The Solar Weather/Solar Activity Monitoring and Forecast The Solar Weather/Solar Activity Monitoring and Forecast 1(4) Ronald van der Linden Using CME Observations for Geomagnetic Storm Forecasting 5(10) Andrei N. Zhukov Solar Activity Monitoring 15(12) Peter T. Gallagher R. T. James McAteer C. Alex Young Jack Ireland Russell J. Hewett Paul Conlon Modeling of Solar Energetic Particles in Interplanetary Space 27(12) Rami Vainio Neus Agueda Angels Aran David Lario Simulating CME Initiation and Evolution: State-of-the-art 39(10) S. Poedts B. van der Holst C. Jacobs E. Chane G. Dubey D. Kimpe Signatures of the Ancient Sun Constraining the Early Emergence of Life on Earth 49(12) M. Messerotti J. Chela-Flores Session 2: The Sun's Interaction with the Earth's Thermosphere and Climate System The Sun's Interaction with the Earth's Thermosphere and Climate System 61(4) A.S. Rodger Solar Variability and Climate 65(18) Joanna D. Haigh Influence of Solar Activity Cycles on Earth's Climate 83(12) Nigel D. Marsh Unravelling Signs of Global Change in the Ionosphere 95(12) Thomas Ulich Mark A. Clilverd Martin J. Jarvis Henry Rishbeth Thermosphere Density Model Calibration 107(8) Eelco Doornbos Numerical Space Weather Prediction: Can Meteorologists Forecast the Way Ahead? 115(10) M. Keil Session 3: Ionosphere/Positioning and Telecommunications Ionosphere/Positioning and Telecommunications 125(4) Sandro M. Radicella Space Weather Influence on Satellite-based Navigation and Precise Positioning 129(18) R. Warnant S. Lejeune M. Bavier New Improvements in HF Ionospheric Communication and Direction Finding Systems 147(22) Louis Bertel Christian Brousseau Yvon Erhel Dominique Lemur Frangois Marie Martial Oger Short-Term foF2 Forecast: Present Day State of Art 169(16) A.V. Mikhailov V.H. Depuev A.H. Depueva Manifestation of Strong Geomagnetic Storms in the Ionosphere above Europe 185(18) D. Buresova J. Lastovicka G. de Franceschi Effects of Scintillations in GNSS Operation 203(14) Y. Beniguel J.-P. Adam Session 4: Radiation Environment of The Earth/Spacecraft and Aircraft Environment Radiation Environment of The Earth-Spacecraft and Aircraft Environment 217(2) Ioannis A. Daglis Complementarity of Measurements and Models in Reproducing Earth's Radiation Belt Dynamics 219(12) S. Bourdarie V. Maget R. Friedel D. Boscher A. Sicard D. Lazaro Radiation Effects on Spacecraft and Countermeasures, Selected Cases 231(10) Wolfgang Keil Aircraft Crew Radiation Exposure in Aviation Altitudes During Quiet and Solar Storm Periods 241(28) Peter Beck Session 5: The Magnetic Environment GICs and Other Ground Effects The Magnetic Environment -- GIC and Other Ground Effects 269(8) Jurgen Watermann Geomagnetic Indices in Solar-Terrestrial Physics and Space Weather 277(12) M. Menvielle A. Marchaudon The Value of Real-time Geomagnetic Reference Data to the Oil and Gas Industry 289(10) James Bowe Simon McCulloch Spatiotemporal Characteristics of the Ground Electromagnetic Field Fluctuations in the Auroral Region and Implications on the Predictability of Geomagnetically Induced Currents 299(12) A. Pulkkinen Finnish Experiences with Grid Effects of GIC's 311(16) Jarmo Elovaara Index 327