According to my latest model for the last glacial maximum (LGM) (Grosswald 1988), the Arctic continental margin of Eurasia was glaciated by the Eurasian ice sheet, which consisted of three interconnected ice domes --the Scandinavian, Kara, and East Siberian. The Kara Sea glacier was largely a marine ice dome grounded on the sea's continental shelf. The ice dome discharged its ice in all directions, northward into the deep Arctic Basin, southward and westward onto the mainland of west-central North Siberia, the northern Russian Plain, and over the Barents shelf into the Norwegian-Greenland Sea On the Barents shelf, the Kara ice dome merged with the Scandinavian ice dome. In the Arctic Basin the discharged ice floated and eventually coalesced with the floating glacier ice of the North-American provenance giving rise to the Central-Arctic ice shelf. Along its southern margin, the Kara ice dome impounded the northward flowing rivers, causing the formation of large proglaciallakes and their integration into a transcontinental meltwater drainage system. Despite the constant increase in corroborating evidence, the concept of a Kara ice dome is still considered debatable, and the ice dome itself problematic. As a result, a paleogeographic uncertainty takes place, which is aggravated by the fact that a great deal of existing knowledge, no matter how broadly accepted, is based on ambiguous interpretations of the data, most of which are published in Russian and, therefore, not easily available to western scientists.

consequences of broken symmetry -here parity-is studied. In this model, turbulence is dominated by a hierarchy of helical (corkscrew) structures. The authors stress the unique features of such pseudo-scalar cascades as well as the extreme nature of the resulting (intermittent) fluctuations. Intermittent turbulent cascades was also the theme of a paper by us in which we show that universality classes exist for continuous cascades (in which an infinite number of cascade steps occur over a finite range of scales). This result is the multiplicative analogue of the familiar central limit theorem for the addition of random variables. Finally, an interesting paper by Pasmanter investigates the scaling associated with anomolous diffusion in a chaotic tidal basin model involving a small number of degrees of freedom. Although the statistical literature is replete with techniques for dealing with those random processes characterized by both exponentially decaying (non-scaling) autocorrelations and exponentially decaying probability distributions, there is a real paucity of literature appropriate for geophysical fields exhibiting either scaling over wide ranges (e. g. algebraic autocorrelations) or extreme fluctuations (e. g. algebraic probabilities, divergence of high order statistical moments). In fact, about the only relevant technique that is regularly used -fourier analysis (energy spectra) -permits only an estimate of a single (power law) exponent. If the fields were mono-fractal (characterized by a single fractal dimension) this would be sufficient, however their generally multifractal character calls for the development of new techniques.

The Dawn of Massively Parallel Processing in Meteorology presents collected papers of the third workshop on this topic held at the European Centre of Medium-Range Weather Forecasts (ECMWF). It provides an insight into the state of the art in using parallel processors operationally, and allows extrapolation to other time-critical applications. It also documents the advent of massively parallel systems to cope with these applications.

Investigations of atmospheric pollution have recently reached a new stage. In addition to the estimation and the monitoring of pollutant concentrations in the air around their sources, by way of observational data and also by calcu lations on the basis of theoretical research, it is now possible to make short term forecasts of air pollution and to use them to regulate industrial emissions. Many countries are interested in such forecasts. In the Soviet Union the organizations of the State Committee of the USSR for Hydrometeorology (Goskomgidromet) are carrying out a wide-scale scientific programme on the devising of methods to forecast atmospheric pollution. Prognostic groups are organized in territorial hydrometeocenters; in essence a new forecasting service has been established. Nowadays, in more than 200 towns of the USSR predictions are made and transmitted to large enterprises for the purpose of taking the necessary steps to preserve air qua lity. To ensure an operative working of this service, Methodological Instruc (1979) have been issued, as well as other instructions and guides. Wide tions scale verifications of proposed calculating methods have been made. Prob lems of forecasting and regulating air pollution have become evident lately in other countries as well. Much attention to these problems is payed by the World Meteorological Organization (WMO). They have been widely dis cussed in a number of international conferences and meetings for modelling and investigating pollutant distribution in the atmosphere. The number of publications on this subject is rapidly increasing."

Le rassemblement sur la zone industrielle de FOS-BERRE d'une densite importante de mesures meteorologiques et physioo-chimiques, per- met de proposer, dans Ie cadre de notre action COST 61 a bis, l'utilisa- tion de ces mesures pour initialiser et verifier divers types de modeles. L'objectif initial de cette campagne est l'intercomparaison d'instruments de teledetection. II s'agit d'une des campagnes effectuees periodiquement, en des sites differents a l'initiative des Communautes europeennes. Ces campagnes comportent deux phases: la premiere est l'inter- calibration des instruments au m@me point, et la seconde est l'estimation des flux de polluants sur la zone etudiee. Effectuee en general a l'aide de moyens mobiles de teledetec- tion, cette estimation ne peut @tre assuree que si lion connatt Ie champ de vent et Ie profil vertical de temperature (et, bien sOr, les caracte- ristiques des sources polluantes). L'Etablissement d'Etudes et de Recherches Meteorologiques de la Meteorologie Nationale (EERM) et Ie Service Etudes et Recherches de l'E- lectricite de France (EDF) sollicites pour fournir l'assistance meteoro- logique correspondante, ont propose, du fait de la presence de moyens im- portants sur Ie site, une campagne mesometeorologique. Ce deuxieme objec- tif a permis d'obtenir des donnees tres completes, que les modelisateurs europeens devraient pouvoir utiliser. II - Aspects meteorologigues, reconstitution des champs Le site de FOS-BERRE se caracterise par sa geographie tourmen- tee: presence de la mer, de l'Etang de Berre et de reliefs. Toutefois, Ie mecanisme engendrant les fortes pollutions reste en gros Ie m@me que sur site homogene.

Structural clay products have had a place in the history of civilization like bread and cloth. Probably because the industry has been so commonplace in the lives of people, 1ittle has been written about it; even the history of its development is sketchy. There is no other book quite like this in publication at present, and it is prompted now because much general scientific knowledge can be, and is, applied to the manufacture of structural clay products. This book is an attempt to bring together in one place the basic sciences that can be useful in all of the processes and experiences of the clayworker. This volume was written primarily as a text to be used in courses for third and fourth year college students; however, there will be a broader interest in it by industrial foremen, engineers, architects, and scientists employed in the manu facture, research and use of structural clay products. It will also be a source of general information for those interested in entering the field. The treatment of the basic principles of clay products manufacturing and use is so general that even those interested in refractories, whitewares, and pottery may find many parts useful to them."

This book is a result of a career spent developing and applying computer techniques for the geosciences. The need for a geoscience modeling reference became apparent during participation in several workshops and conferences on the subject in the last three years. For organizing these, and for the lively discussions that ensued and inevitably contributed to the contents, I thank Keith Turner, Brian Kelk, George Pflug and Johnathan Raper. The total number of colleagues who contributed in various ways over the preceding years to the concepts and techniques presented is beyond count. The book is dedicated to all of them. Compilation of the book would have been impossible without assistance from a number of colleagues who contributed directly. In particular, Ed Rychkun, Joe Ringwald, Dave Elliott, Tom Fisher and Richard Saccany reviewed parts of the text and contributed valuable comment. Mohan Srivastava reviewed and contributed to some of the geostatistical presentations. Mark Stoakes, Peter Dettlaff and Simon Wigzell assisted with computer processing of the many application examples. Anar Khanji and Randal Crombe assisted in preparation of the text and computer images. Klaus Lamers assisted with printing. The US Geological Survey, the British Columbia Ministry of Environment, Dave Elliott and others provided data for the application examples. My sincere thanks to all of them.

The VDI Commission on Air Pollution Prevention - in cooperation with the German Meteorological Society - presents in this book the proceedings of the first International Symposium on "Environmental Meteorology", held in Wurzburg (West Germany) from 29 September to 1 October 1987. The primary goal was to get together scientists, experts of the meteorological services, specialists of environmental boards, and consulting engineers of the European countries. An equally important objective was to provide a bench mark document in the resulting proceedings publication. The 1987 symposium shall start a series of symposia on all fields of environmental meteorology to be held once in three or four years in one of the European countries. We are full of hope to come to an intense cooperation with the national meteorological and environmental societies in the countries with this concern. We like to express our sincere appreciation to the authors for their efforts and attention to the quality shown herein. The credit must be extended to the session Chairmen and to the advisory committee for the selection of the papers. We think the book contributes substantially to a better understanding of meteorology being the link between emission and deposition of atmospheric pollutants.

The increasing production of industrial goods, heat, and energy, as well as traffic, has led to the release of considerable amounts of toxic trace metals to the atmosphere. The result is elevated concentrations of toxic metals in local populations and eco systems. Recently the problem of atmospheric long-range transport of trace metals has also been recognized. Significant amounts of these pollutants are disposed and deposited both on regional and global scales. In the atmosphere they may influence the chemical reactions. Of particular interest is their catalytic effect on the oxidation prosesses taking place in water droplets or on the surface of wet particles (e. g. the oxidation of sulphur dioxide to sulphate), however, the main environmental impact starts when the atmospheric trace metals are deposited on ground and vegetation and subsequently brought into the water circulation. During the later years significant progress has been made in the development of equipment to reduce and control the atmospheric emissions of toxic trace metals. This particularly applies to electrostatic precipitators and wet scrubbers for the collection of fine particles. The main objective of the workshop was to survey present knowledge concerning the sources, atmospheric fluxes, sinks and chemical impact of the atmospheric trace metals, and to review the developments of emission control equipment and the perspectives to reduce the potential risks from toxic metals. During the first two days of the meeting, 15 invited review papers were presented."

This volume contains progress papers in atmospheric ozone research which were presen- ted at the Ouadrennial Ozone symposium held in Greece from 3 to 7 September, 1984. These pa- pers are grouped in nine chapters corresponding to the nine sessions of the symposium. The Editors proVide the following summary of the highlights for each chapter; this summary has been prepared after consulting the papers submitted for publication as well as session summa- ries kindly provided by the following session chairmen: R. Bojkov, H. DOtsch, P. Fabian, J. Hai- gh, I. Isaksen, L. Kaplan, K. KOnzi, J. London, H. Mantis, C. Mateer, A. Matthews, G. Megie and J. Russell. Chapter 1 entitled: Chemical -radiative -dynamical model calculations includes results from recent developments in modeling techniques. The chapter begins with the results from a two -dimensional model using isentropic coordinates. With prescribed diabatic heating rates and a judicious choice of eddy diffusion coefficients this method can produce realistic fields of several stratospheric species. Three dimensional model simulations come next which demon- strate ozone transport by the stationary and transient components of the flow and emphasize the role of wave transport of ozone during a sudden stratospheric warming. The problem of chemical model validation is addressed in several different approaches.

One of the major findings in the 1992 IPCC report and the 1994 World Meteorological Organization's Ozone Assessment report was the identification of possible climatic effects over the last few decades resulting from anthropogenic ally-induced changes in atmospheric ozone. The initial quantitative estimates of their direct climatic effects indicate significant impacts, though large uncertainties exist and studies using general circulation models are needed. A point that needs to be addressed in particular is that atmospheric ozone differs from greenhouse gases in that it is formed and destroyed by chemical processes in the atmosphere due to interaction involving a large number of source gases (e. g. H0, NO ' CO, 2 x NMHC, N0, CH and the CFCs). Therefore, the indirect effect of climate-chemistry 2 4 interaction involving atmospheric ozone is an important aspect for consideration in general circulation models. During the last few years, there have been several international workshops related to atmospheric ozone. In 1987, a NATO workshop on atmospheric ozone was held in Lillehammer, Norway. More recently, two workshops were organized to discuss the topic "General Circulation Model Study of Climate-Chemistry Interaction. " The first was held August 19-21, 1992, in Oslo, Norway, and the second held May 26-27,1993, in Albany, New York, USA. The two workshops were IAMAP activities under the Trace Constituent Working Group.

Do changes in stratospheric ozone relate to changes in UV-B irradiance and do both relate to life on Earth? This volume presents the latest data available in the basic scientific disciplines associated with these questions. The key topics are the interactive factors between the various research elements and the measurements needed to both validate ozone depletion and monitor UV flux changes in the biosphere.

This annually published Bibliography provides an overview of cartographical literature published around the world. Each annual volume lists approximately 2,000 monographs and articles published in some 400 periodicals. These are all analysed by an international group of collaborating experts. Among the topics covered are the history of cartography, cartographic personalities and institutions, the making of maps, areas such as topographical or atlas cartography, or maps for the blind, film and screen maps and the use of maps. Titles are listed in their original language and can be looked up either in the Author Index or in the English, French or German list of contents.

Although a considerable amount of information concerning the applications for arc plasmas in the materials sciences is available, it is contained in literally thousands of separate manuals, technical notes, textbooks, and government and industrial reports. Each source generally deals with only one specific application or, at best, a narrow range of utilization. This book was developed to provide a comprehensive and up-to-date compilation of information in the technology of arc plasma utilization. The book is divided into two general categories: flame spraying and materials evaluation. In the flame spraying section a comprehensive review of the plasma spraying process is presented. The design and operation of plasma spraying equipment are described. Included are a description of the nature of a plasma, and the design and operation of plasma generators, powder feed systems and accessory control equip ment. The general process procedures, and associated process variables are de scribed. Particular emphasis is given to the particle heating process and the mechanisms for adherence and cohesion of coatings. Competitive flame spraying equipment is also detailed (combustion process, detonation and electric arc) and compared with the plasma spray process. A discussion and compilation of flame sprayed ceramic and metal materials, their properties and applications are also included."

This book focuses on visualization modules of GI software and systems, and tries to answer the specific question "How commonly is stereoscopic visualization supported in GI systems?." To achieve this, first whether such support exits or not in mainstream GI software is documented. The study is further detailed to assess which type of stereoscopic operations and viewing methods are supported. Motivated by improving efficiency of stereoscopic visualizations in cartographic do-main, within this survey, it is also examined whether these systems and software offer level of detail management support for stereoscopic data-sets. Findings from the study meant as a guide to researchers and practitioners to assess the cur-rent state of True 3D support in cartography and GI Systems.

Collected articles in this series are dedicated to the development and use of software for earth system modelling and aims at bridging the gap between IT solutions and climate science. The particular topic covered in this volume addresses the process of configuring, building, and running earth system models. Earth system models are typically a collection of interacting computer codes (often called components) which together simulate the earth system. Each code component is written to model some physical process which forms part of the earth system (such as the Ocean). This book is concerned with the source code version control of these code components, the configuration of these components into earth system models, the creation of executable(s) from the component source code and related libraries and the running and monitoring of the resultant executables on the available hardware.

Applying tools for data analysis to the rapidly increasing volume of data about the Earth An ever-increasing volume of Earth data is being gathered. These data are "big" not only in size but also in their complexity, different formats, and varied scientific disciplines. As such, big data are disrupting traditional research. New methods and platforms, such as the cloud, are tackling these new challenges. Big Data Analytics in Earth, Atmospheric, and Ocean Sciences explores new tools for the analysis and display of the rapidly increasing volume of data about the Earth. Volume highlights include: An introduction to the breadth of big earth data analytics Architectures developed to support big earth data analytics Different analysis and statistical methods for big earth data Current applications of analytics to Earth science data Challenges to fully implementing big data analytics The American Geophysical Union promotes discovery in Earth and space science for the benefit of humanity. Its publications disseminate scientific knowledge and provide resources for researchers, students, and professionals.

Oxidation and removal of atmospheric constituents involve complex sequences of reactions which can lead to the production of photo-oxidants such as ozone. In order to understand and model these complex reaction sequences, it is necessary to have a comprehensive understanding of reaction mechanisms and accurate estimates of kinetic parameters for relevant gas-phase atmospheric reactions. This book presents recent advances in the field and includes the following topics: e.g. the oxidation of simple organic compounds, NOx kinetics and mechanisms, OH radical production and rate constants for the OH attack on more complex organic compounds, peroxy and alkoxy radical reactions, photo-oxidation of aromatic and biogenic compounds, and the interaction between radical species.

The literature on the geochemistry of gallium is very extensive and several problems arise in an attempt to summarise the available information in a short account. Only a small proportion of the many determinations of gallium in rocks and minerals has been made by the most precise and accurate procedures, and ana lyses by emission spectrographic methods constitute a dominant part of the data given here. In Table 31-1 are summarised the results of determinations of gallium in two standard rocks by various procedures. These results show that the generally less precise spectrographic procedures give, on average, values of adequate accuracy. In view of this and also the quite low dispersion of gallium in common rocks and minerals, the average results of the less precise analyses often constitute abundance data of reasonable quality. Individual determinations or whole series of determina tions by these methods are sometimes inaccurate, however, and it remains difficult to assess questions such as the extent to which differences in concentrations recorded for various areas represent genuine regional variations as distinct from systematic analytical errors. Furthermore, the low dispersion of gallium leads to an interest in relatively small variations in processes such as magmatic differentiation, and these variations tend to be obscured in many investigations through the use of imprecise methods."

The present book is the result of work carried out over a period of about ten years by the author and his co-workers in order to describe more accurately the slow irreversible deformation in time of the rocks surrounding underground openings. To begin with, our efforts were directed toward a better under standing of the mechanical behaviour of rocks and to the formulation of more precise mathematical models for their dominant mechanical properties, mainly irreversible dilatancy and/or compressibility during creep. Subsequent efforts were focused on finding improved solutions to important mining and oil engineering problems, such as, for instance, the creep of rocks around wells and tunnels, short-term failure which may occur around an underground opening, damage and failure which take place after long-time intervals, the tunnel support analysis incorporating rock creep, etc. The book is the result of a great number of questions posed either by mining engineers or by the author himself, and of the corresponding answers (unfor tunately often only partial answers). This dialogue must certainly be continued in order to improve the models and to formulate models for other kinds of rocks, or, ultimately to obtain solutions for other important engineering problems. It is hoped that the book will also contribute to a better description, by means of mathematical models, of the mechanical behaviour of rocks."

This is the first study of the karst areas of China to be carried out by a Western geomorphologist, and almost all the sources are from Chinese works, as yet unpublished in the West. Karst areas are sensitive to environmental influences and Chinese attempts to deal with these are discussed here, as are Chinese methods of studying karst since they differ somewhat from those in the West. Finally, the author compares karst areas in Europe and elsewhere with those in China. The book is illustrated by numerous diagrams from Chinese sources as well as the author's own photographs.

Earth scientists, who have worked together for 6 years in the priority pro gram "Hydrogeochemical Processes in the Hydrological Cycle Within the Unsaturated and Saturated Zones," have summarized the results of their research in this volume. This is the occasion to take stock and then look ahead. The priority program was set up by the Senate of The Deutsche Forschungsgemeinschaft in October 1981. This was preceded by lengthy and careful preparation by a Program Committee, and was finally recom mended by the Senate Commission for Joint Research in Earth Sciences. The main aim was the interdisciplinary research of geochemical processes in natural systems in the total underground water cycle, whereby water pollution was not to be considered. Officially started on 1 September 1982, the program has received a grant of DM 10. 9 Mio. from the DFG, and this has enabled it to support a total of 50 projects. Although at the beginning, practice-oriented projects, which were funded elsewhere, were not to be included, many of the results are applicable. The four categories presented were investigated with vary ing intensity. An early concentration on certain representative fields of measurement and research areas proved to be the right approach - this avoided a waste of effort in other fields. During the period of the priority program, new and topical questions arose, e. g."

Anthropogenic release of carbon dioxide into the atmosphere has been recognized as the primary agent in global climate change.
The volume discusses the possibilities for limiting that increase by the long-term storage of carbon in soils, vegetation, wetlands and oceans. Each of these storage media is analysed in detail to elucidate those processes responsible for the uptake and release of carbon. Several chapters address the practical prospects for deliberate interventions aimed at adjusting the balance in favour of uptake over release, i.e. sequestration, while having regard to simultaneous changes in the various environments.

Numerical weather prediction on the one hand needs a very large number of floating point calculations, but on the other hand is very time-critical. Therefore, the largest computers available, i.e., the "supercomputers," have usually been acquired by the national meteorological services long before they were used in other fields of research or business. Since the available technology limits the speed of any single computer, parallel computations have become necessary to achieve further improvements in the number of results produced per time unit. This book collects the papers presented at two workshops held at ECMWF on the topic of parallel processing in meteorological models. It provides an insight into the state-of-the-art in using parallel processors operationally and allows extrapolation to other time-critical applications. It also shows trends in migrating to massive parallel systems in the near future.

A. AULICIEMS Living organisms respond to atmospheric variability and variation, and over time morphological and process differentiations occur both within individuals and the species, as well as in the environment itself. In systems language, the concern is with the atmospheric process-response system of energy and matter flows within the biosphere. The study of such interactions between living organ isms and the atmospheric environment falls within the field of bioclimatology, alternatively referred to as biometeorology. Amongst the more readily recognizable study areas under the bioclimatolog that investigate the effects of atmospheric variation and ical umbrella are those variability upon 1. Terrestrial and aquatic ecology (zoological, botanical and ethological), natural resource production and management (including silviculture, agri culture, horticulture, and grassland, wetland, and marine systems). 2. Stress, morbidity and mortality in animals and humans (including physiolog ical and psychological adaptations). 3. The built environment (all aspects of planning, urban design, and architec ture). 4. Economic systems and social activities (including organizational, individual, and group behavior and management). In addition, bioclimatology is very much concerned with the feedback loop, that is both 5. The inadvertent modification of the atmosphere by living systems, especially human, i.e., studies of pollution, changes to atmospheric amenity, and the processes of deterioration of landscape (deforestation and desertification), and 6. The advertent modifications of natural energy and matter flows within urban areas and indoor climate constructions."