Strong winds accompanying extratropical cyclones are commonly associated with various mesoscale features. This work introduces RAMEFI (RAndom-forest-based Mesoscale wind Feature Identification), an objective and flexible identification approach based on key surface characteristics to distinguish these features. RAMEFI is further applied to compile a climatology over Europe, offering a comprehensive analysis of feature frequency, distribution, and characteristics.
This book is composed of 12 review papers invited for the Palmen Memorial Symposium on Extratropical Cyclones held in Helsinki, Finland, 29 August - 2 September 1988. To celebrate the 90th anniversary of the birth of Professor Erik Palmén, this symposium was organized to give a state-of-the-art picture of research on the structure and dynamics of extratropical cyclones, a topic which Palmén pioneered during the era of advances in aerological analysis. This symposium was organized by the Geophysical Society of Finland and the American Meteorological Society in cooperation with the Danish, Norwegian and Swedish Geophysical Societies. Extratropical Cyclones offers state-of-the-art information on extratropical cyclones, and recent findings by European and American authorities in various subject areas. The first two chapters discuss Palmen's works on cyclones and his early general circulation concepts. The ten chapters following chronicle the advances in understanding cyclones; the theory, structure, and physical processes of cyclones; orographic cyclogenesis; and more. Extratropical Cyclones also contains synoptic case analyses, modeling results, examples of the phenomena discussed, and abundant references. While particular aspects are emphasized in the individual contributions, the book as a whole summarizes the major features of various kinds of extratropical cyclones based on observational analyses, theory and numerical experimentation. This volume is of interest to researchers in dynamic and synoptic meteorology, climatology and mesometeorology, as well as in numerical modeling and weather forecasting. It is also useful for meteorology courses at graduate and upper undergraduate levels.
Global environmental change is one of the most pressing international issues of the next century. There is a need to monitor the Earth's vital signs, from atmospheric ozone to tropical deforestation to sea level change. Models used to predict global changes have not yet fully used global observational data sets. Satellite data sets will be vital in addressing global change issues, in determining natural variability and monitoring global and regional changes. This timely volume provides an illustration of the variety of satellite-derived global data sets now available, their uses, advantages and limitations, and the range of variation that has already been observed with these data. A team of distinguished contributors provide a highly illustrated and accessible account suitable for the general scientific reader.
A quantitative introduction to atmospheric science for students and professionals who want to understand and apply basic meteorological concepts but who are not ready for calculus.
