During the 1980's a wealth of information was reported from field and laboratory experiments in order to validate andlor modify various aspects of the surface layer Monin-Obukhov (M-O) similarity theory for use over the sea, and to introduce and test new concepts related to high resolution flux magnitudes and variabilities. For example, data from various field experiments conducted on the North Sea, Lake Ontario, and the Atlantic experiments, among others, yielded information on the dependence of the flux coefficients on wave state. In all field projects, the usual criteria for satisfying M-O similarity were applied. The assumptions of stationarity and homogeneity was assumed to be relevant over both small and large scales. In addition, the properties of the outer layer were assumed to be "correlated" with properties of the surface layer. These assumptions generally required that data were averaged for spatial footprints representing scales greater than 25 km (or typically 30 minutes or longer for typical windspeeds). While more and more data became available over the years, and the technology applied was more reliable, robust, and durable, the flux coefficients and other turbulent parameters still exhibited significant unexplained scatter. Since the scatter did not show sufficient reduction over the years to meet customer needs, in spite of improved technology and heavy financial investments, one could only conclude that perhaps the use of similarity theory contained too many simplifications when applied to environments which were more complicated than previously thought.

After World War II, Professor S.K. Mitra wrote a comprehensive book called The Upper Atmosphere, which dealt with information available from ground-based and balloon-borne experiments. As a result, topics such as day airglow were investigated and further ground-based experiments using incoherent back-scattering were carried out. These activities resulted in new information on the ozonosphere.

The dramatic discovery of ozone holes forms a new and exciting chapter in the discovery of atmospheric processes. While dealing with the limits of the atmosphere, reference may be made to interstellar molecules whose discovery has raised considerable scientific curiosity. Knowledge of the solar-terrestrial relationship advanced a great deal when more information on solar radiation became available by measuring higher energy photons in the UV, EUV, and even X-ray regimes.

All this information is incorporated in this volume and presented under the title The Neutral Upper Atmosphere.

One challenge in atmospheric chemistry is understanding the intercontinental transport and transformation of gases and aerosols. This book describes observational and modeling techniques used to understand atmospheric composition from satellites, aircraft and ground based platforms. Common ideas presented throughout are the role of each component in an observing system for atmospheric composition, and advances necessary to improve understanding of atmospheric composition.

This book presents decade-long advances in atmospheric research in the Mackenzie River Basin in northern Canada, which encompasses environments representative of most cold areas on Earth. Collaborative efforts have yielded knowledge entirely transferable to other high latitude regions in America, Europe and Asia. This book complements the first volume coming from the GEWEX project, dealing with the region's atmospheric dynamics.

This book is the third volume of the proceedings of the 4th GeoShanghai International Conference that was held on May 27 - 30, 2018. This volume, entitled "Rock Mechanics and Rock Engineering" , covers the recent advances and technologies in rock mechanics and rock engineering. These papers are grouped in three categories: (1) Theoretical and numerical study of rock behaviours, (2) Experimental study of rock behaviours, and (3) Applications of rock mechanics and case studies. This volume presents the state-of-the-art theories, methodologies and findings in the related areas. The book may benefit researchers and scientists from the academic fields of rock mechanics and rock engineering, geotechnical engineering, geoenvironmental engineering, transportation engineering, geology, mining and energy, as well as practical engineers from the industry. Each of the papers included in this book received at least two positive peer reviews. The editors would like to express their sincerest appreciation to all of the anonymous reviewers all over the world, for their diligent work.

Bangladesh faces many challenges. So long it has been mainly the traditional ones of socio economic development and eradication of poverty. Environment as a major factor in this process has only recently entered the scene. But even before environmental considerations in the development process has become the normal practice, the spectre of climate change has reared its ugly head. While Bangladesh is not unique among developing countries in being at the receiving end regarding the causes and consequences of climate change, both in the literal and allegorical sense of the term, the fact remains that it has made the prospects for sustainable socio-economic development in the country much more complex and formidable than before. Both for her own sake and the sake of the global community at large, therefore, Bangladesh has to initiate actions at various levels to face the challenge from now on. The present study is a part of that process. In 1996, the Governments of USA and Bangladesh together decided to initiate a comprehensive study on climate change in Bangladesh. A unique consortium of public and non-governmental research organisations with support from the relevant administrative arms of the Government carried out the study over 1996 and 1997. The report has been accepted by the Government and several of its recommendations are in the process of implementation. While the direction of climate change is broadly certain, its details leave much scope for speculation and interpretation."

The dynamics of the atmosphere, ocean, and climate are inherently nonlinear and complex, making computer models ideal for accurate, complete understanding of these systems. In the process of building and using models, the reader of this book will learn how the different components of climate systems function, interact with each other, and vary over time. Topics covered include the stability of climate, earth's energy balance, parcel dynamics in the atmosphere, the mechanisms of heat transport in the climate system, and mechanisms of climate variability. Special attention is given to the effects of climate change. The book is accompanied by a cross-platform CD containing models and a run-time version of STELLA (R) software. Walter A. Robinson is Associate Professor of Atmospheric Sciences at the University of Illinois at Urbana-Chamaign.

This book is a compilation of papers contributed by researchers and scientists from SAARC nations and deals with high-impact weather conditions, their prediction and potential consequences for populations in the SAARC region. There have been a number of recent advances in our understanding and prediction of cyclones, severe thunderstorms, squalls, heat and cold waves, droughts and heavy rainfall, based on the latest observational data and NWP modeling platform. The SAARC region is vulnerable to high-impact weather events because of geophysical features like high mountains, plateaus and vast oceans. As our climate continues to change over the coming years, the likelihood of extreme and potentially high-impact weather and climate events will be at its highest when natural and anthropogenic effects combine. All chapters were written by leading experts in their respective research and operational fields. The book reviews the latest research, future needs, forecasting skills and societal impacts of extreme weather events and offers high-quality reference material for weather forecasters, disaster managers and researchers.

A multidecadal cooling is known to have occurred in Europe in the final decades of the sixteenth-century. It is still open to debate as to what might have caused the underlying shifts in atmospheric circulation and how these changes affected societies. This book is the fruit of interdisciplinary cooperation among 37 scientists including climatologists, hydrologists, glaciologists, dendroclimatologists, and economic and cultural historians. The known documentary climatic evidence from six European countries is compared to results of tree-ring studies. Seasonal temperature and precipitation are estimated from this data and monthly mean surface pressure patterns in the European area are reconstructed for outstanding anomalies. Results are compared to fluctuations of Alpine glaciers and to changes in the frequency of severe floods and coastal storms. Moreover, the impact of climate change on grain prices and wine production is assessed. Finally, it is convincingly argued that witches at that time were burnt as scapegoats for climatic change.

Climate Change and Extreme Events uses a multidisciplinary approach to discuss the relationship between climate change-related weather extremes and their impact on human lives. Topics discussed are grouped into four major sections: weather parameters, hydrological responses, mitigation and adaptation, and governance and policies, with each addressed with regard to past, present and future perspectives. Sections give an overview of weather parameters and hydrological responses, presenting current knowledge and a future outlook on air and stream temperatures, precipitation, storms and hurricanes, flooding, and ecosystem responses to these extremes. Other sections cover extreme weather events and discuss the role of the state in policymaking. This book provides a valuable interdisciplinary resource to climate scientists and meteorologists, environmental researchers, and social scientists interested in extreme weather.

This book provides an overview of the early years of the European Centre for Medium-Range Weather Forecasts, and reviews the work of the institute over the past 30 years, describing along the way the European approach to medium-range weather forecasting. Its combination of historical view and scientific insight is unique.

Weather radar systems provide data necessary for the understanding of weather systems, improved forecasts (especially critical for severe weather), hydrological applications, flood warnings and also for climate research in which ground verification is needed for global precipitation measurements by satellites. This book offers an accessible overview of advanced methods, applications and modern research from the European perspective. An extensive introductory chapter summarizes the principles of weather radars and discusses the potential of modern radar systems, including Doppler and polarisation techniques, data processing, and error-correction methods. Addressing both specialist researchers and nonspecialists from related areas, this book will also be useful for graduate students planning to specialize in this field.

Proceedings of IAGA/IAMAP Joint Assembly, August--September 1977, Seattle, Washington

Oceans and the Atmospheric Carbon Content, presents an interdisciplinary overview of the role of the oceans as a carbon sink and its relation with pH increasing trends and climate change. This volume discusses topics such as: climate variability during the last deglaciation, based on a high-resolution pollen analysis; the potential impact of CO2 from large metropolitan areas over the adjacent coastal zones and the importance of having high resolution atmospheric CO2 data to estimate accurately air-sea CO2 exchanges; present- day CO2 fluxes in the coastal ocean and their potential feedbacks under global climate change; phytoplankton community responses to climate change with emphasis on decreasing pH trends in sea water and its ecological effects; pH decrease and its effects on sea-water chemistry from a ten year time-series; the effect of acidification on metal bioaccumulation; the effects of increasing temperatures and acidification on contaminant dynamics and availability to biota; the prevention of potential environmental impacts related to the geological sequestration of CO2. The book provides an updated synthesis of current concerns related to global change trends in the oceans with a strong emphasis on acidification. The content draws attention to the importance of dealing with observed global change trends and their effects upon the oceans using an interdisciplinary approach due to their complexity and interlinks between different areas of knowledge.

The science of climate change has experienced an extraordinary expansion in the period since the mid-1980s and is paralleled by considerable public and political awareness of related issues.
The degree of natural variability in, and the causes of, climate change have become particularly important points of debate and the past decade has seen many publications dealing with these issues. Indeed, the area of climate research as a whole is now so large, and the sources of data so diverse, that many researchers are unaware of significant developments across the field. This collection therefore aims to provide a balanced selection of published papers, so as to make easily available the existing breadth and depth of information.
Taken together, the set of volumes will provide for the researcher (a) a greater awareness of the evidence for natural variability of climate; (b) a perspective on the role of various forcing factors in climate change; (c) a selection of papers that argue both for, and against, the 'solar' and 'anthropogenic' hypotheses as explanations for recent and current climate change; (d) a sense of what future climate will be like, and what remains to be discovered or achieved.

The lntergovernmental Panel on Climate Change (IPCC) has recently summarized the state ofthe art in research on climate change (Climate Change 1995). The most up to date research findings have been divided into three volumes: * the Science ofClimate Change (working group I), * the Impacts, Adaption and Mitigation of Climate Change (working group II), and * the Economic and Social Dimensions ofClimate Change (working group III) There is a general consensus that a serious change in climate can only be avoided if the future emissions of greenhouse gases are reduced considerably from the business as usual projection and if at the same time the natural sinks for greenhouse gases, in particular that of CO , are maintained at the present level or 2 preferrably increased. Forests, forestry and forestry industry are important parts of the global carbon cycle and therefore they are also part of the mitigation potentials in at least a threefold way: 1. During the time period between 1980 and 1989 there was a net emission of CO from changes in tropical land use (mostly tropical deforestation) of 2 1. 6 +/- 1 GtC/a, but at the same time it was estimated that the forests in the northem hemisphere have taken up 0. 5 +/- 0. 5 GtC/a and additionally other terrestrial sinks (including tropical forests where no clearing took place) have been a carbon sink ofthe order of l. 3 +/- l.

Climate and Water: Transboundary Challenges in the Americas explores some of the ways that climate, hydrology, and water resource management converge at the borders between jurisdictions and countries in the western Hemisphere. This book is unique in focusing on case studies of climate-hydrology-water resource management in diverse contexts in South, Central, and North America. This book is singular in highlighting important problems arising from the very existence of boundaries drawn and defined by society. Addressing such problems takes on increasing urgency as the world becomes ever more inter connected and interdependent.

Target groups for this book include water resource managers and decision makers at levels from the international to the local; scientists involved in interdisciplinary studies of basic and applied climatology, hydrology, and environmental studies; and readers specializing in institutional analyses, including transboundary water law, policy analysis, and risk assessment. This book is also a useful text for college classes addressing natural resources management in general, and the transfer of scientific knowledge to society.

This book evolved from the 5th School of Environmental Research entitled Persistent Pollution Past, Present and Future," which has set a focus on Persistent Organic Pollutants (POPs), heavy metals and aerosols.

-reconstruction of past changes based on the scientific analysis of natural archives such as ice cores and peat deposits,

-evaluation of the present environmental state by the integration of measurements and modelling and the establishment of cause-effect-patterns,

-assessment of possible environmental future scenarios including emission and climate change perspectives.

The phenomenon of evaporation in the natural environment is of interest in various diverse disciplines. This book is an attempt to present a coherent and organized introduction to theoretical concepts and relationships useful in analyzing this phe nomenon, and to give an outline of their history and their application. The main objective is to provide a better understanding of evaporation, and to connect some of the approaches and paradigms, that have been developed in different disciplines concerned with this phenomenon. The book is intended for professional scientists and engineers, who are active in hydrology, meteorology, agronomy, oceanography, climatology and related environ mental fields, and who wish to study prevailing concepts on evaporation. At the same time, I hope that the book will be useful to workers in fluid dynamics, who want to become acquainted with applications to an important and interesting natural phenomenon. As suggested in its subtitle, the book consists of three major parts. The first, consisting of Chapters I and 2, gives a general ouline of the problem and a history of the theories of evaporation from ancient times through the end of the nineteenth century. This history is far from exhaustive, but it sket hes the background and the ideas that led directly to the scientific revolution in Europe and, ultimately, to our present-day knowledge."

The NATO Advanced Research Workshop on "Paleoclimatology and Paleometeorology: Modem and Past Patterns of Global Atmospheric Transport" (held at Oracle, Arizona, USA from November 17-19, 1987) brought together atmospheric chemists, physicists, and meteorologists who study the origin and transport of modem-day mineral and biological aerosols with geologists and paleobotanists who study the sedimentary record of eolian and hydrologic processes along with modelers who study and conceptualize the processes influencing atmospheric transport at present and in the past. Presentations at the workshop provided a guide to our present knowledge of the entire spectrum of processes and phenomena important to the generation, transport, and deposition of eolian terrigenous material that ultimately becomes part of the geologic record and the modeling techniques that used to represent these processes. The presenta tions on the geologic record of eolian deposition documented our present understanding of the na e and causes of climate change on time scales of the last glacial ages (tens of thousands of years) to time scales over which the arrangement of continents, mountains, and oceans has changed sub stantially (tens of millions of years). There has been a growing recognition of the importance of global climatic changes to the future well-being of humanity. In particular, the climatic response to human alterations to the earth's surface and chemical composition has led to concern over the agricultural, ecological, and societal impacts of such potential global changes."