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Author: Midhat Hondzo Publisher: ISBN: Category : Climatic changes Languages : en Pages : 514
Book Description
A deterministic, one dimensional, unsteady lake water temperature model was modified and validated to simulate the seasonal (spring to fall) temperature statification structure over a wide range of lake morphometries, trophic and meteorological conditions. Model coefficients related to hypolimnetic eddy diffusivity, light attenuation, wind sheltering, ad convective heat transfer were generalized using theoretical and empirical extensions. Propagation of uncertainty in the lake temperature model was studied using a vector state-space method. The output uncertainty was defined as the result of deviations of meteorological variables from their mean values. Surface water temperatures were affected by uncertain meteorological forcing. Air temperture and dew point temperature fluctuations had significant effects on lake temperature uncertainty. The method presents a useful alternative for studying long-term averages and variability of the water temperature structure in lakes due to variable meteorological forcing. The lake water temperature model was linked to a daily meteorological data base to simulate daily water temperature in several specific lakes as well as 27 lake classes characteristic for the north central US. Case studies of lake water temperature and stratification response to variable climate were made in a particulary warm year (1988) and a more normal one (1971). A regional analysis was conducted for 27 lake classes over a period of twenty-five years (1955-1979). Output from a global climate model (GISS) was used to modify te meteorological data base to account for a doubling of atmospheric CO2. The simulations predict that after climate change: 1) epilimnetic water temperatures will be higher but will increase less than air temperature, 2) hypolimnetic temperatures in seasonally stratified dimictic lakes will be largely unchanged and in some cases lower than at present, 3) evaporative water loss will be increased by as much as 300 mm for the open water season, 4) onset of stratification will occur earlier and overturn will occur later in the season, and 5) overall lake stability will become greater in spring and sumer.
Author: Midhat Hondzo Publisher: ISBN: Category : Climatic changes Languages : en Pages : 514
Book Description
A deterministic, one dimensional, unsteady lake water temperature model was modified and validated to simulate the seasonal (spring to fall) temperature statification structure over a wide range of lake morphometries, trophic and meteorological conditions. Model coefficients related to hypolimnetic eddy diffusivity, light attenuation, wind sheltering, ad convective heat transfer were generalized using theoretical and empirical extensions. Propagation of uncertainty in the lake temperature model was studied using a vector state-space method. The output uncertainty was defined as the result of deviations of meteorological variables from their mean values. Surface water temperatures were affected by uncertain meteorological forcing. Air temperture and dew point temperature fluctuations had significant effects on lake temperature uncertainty. The method presents a useful alternative for studying long-term averages and variability of the water temperature structure in lakes due to variable meteorological forcing. The lake water temperature model was linked to a daily meteorological data base to simulate daily water temperature in several specific lakes as well as 27 lake classes characteristic for the north central US. Case studies of lake water temperature and stratification response to variable climate were made in a particulary warm year (1988) and a more normal one (1971). A regional analysis was conducted for 27 lake classes over a period of twenty-five years (1955-1979). Output from a global climate model (GISS) was used to modify te meteorological data base to account for a doubling of atmospheric CO2. The simulations predict that after climate change: 1) epilimnetic water temperatures will be higher but will increase less than air temperature, 2) hypolimnetic temperatures in seasonally stratified dimictic lakes will be largely unchanged and in some cases lower than at present, 3) evaporative water loss will be increased by as much as 300 mm for the open water season, 4) onset of stratification will occur earlier and overturn will occur later in the season, and 5) overall lake stability will become greater in spring and sumer.
Author: Glen George Publisher: Springer Science & Business Media ISBN: 9048129451 Category : Science Languages : en Pages : 517
Book Description
In this book, scientists from eleven countries summarize the results of an EU project (CLIME) that explored the effects of observed and projected changes in the climate on the dynamics of lakes in Northern, Western and Central Europe. Historical measurements from eighteen sites were used to compare the seasonal dynamics of the lakes and to assess their sensitivity to local, regional and global-scale changes in the weather. Simulations using a common set of water quality models, perturbed by six climate-change scenarios, were then used to assess the uncertainties associated with the projected changes in the climate. The book includes chapters on the phenology and modelling of lake ice, the supply and recycling of nitrogen and phosphorus, the flux of dissolved organic carbon and the growth and the seasonal succession of phytoplankton. There are also chapters on the coherent responses of lakes to changes in the circulation of the atmosphere, the development of a web-based Decision Support System and the implications of climate change for the Water Framework Directive.
Author: Jorg Imberger Publisher: Elsevier ISBN: 9780124045651 Category : Science Languages : en Pages : 0
Book Description
Physical Limnology provides the physical, chemical, and biological information practitioners need to effectively manage inland waters. Physical processes in lakes are known to have significant influence on driving the biology, chemistry, and geology in aquatic environments. In addition to covering the current knowledge in the area of lake physics, this helpful guide also provides coverage of some of the latest challenges in physical limnology. Physical Limnology also covers the mathematical modeling necessary to make basic calculations related to what is happening in lakes. Authored by one of the recognized world leaders in the field Covers the latest physical, chemical, and biological process information, making the work accessible to the general limnologist , lake practitioner, or biologist Provides examples from the author's experience working with lakes around the world Features coverage of the latest challenges in physical limnology
Author: Ramesh D. Gulati Publisher: Springer ISBN: 3319491431 Category : Science Languages : en Pages : 405
Book Description
This volume presents recent advances in the research on meromictic lakes and a state-of-the art overview of this area. After an introduction to the terminology and geographic distribution of meromictic lakes, three concise chapters describe their physical, chemical and biological features. The following eight chapters present case studies of more than a dozen meromictic lakes, showing the variety of physical and biochemical processes that promote meromixis. The result is a broad picture of the ecology and biochemistry of meromictic lakes in tropical and cold regions, in man-made pit lakes and euxinic marine lakes, and in freshwater as well as hypersaline lakes. In the final chapter the editors provide a synthesis of the topic and conclude that the study of meromictic lakes also offers new insights into the limnology of inland lakes. The book appeals to researchers in the fields of ecology, limnology, environmental physics and biophysics.
Author: Zdzislaw Kaczmarek Publisher: Springer Science & Business Media ISBN: 9780792339274 Category : Science Languages : en Pages : 412
Book Description
This text is the first international and comprehensive discussion of the impacts of climatic fluctuations and climate change on water resources management. The book presents an overview of the impacts of climatic change/fluctuations on a wide variety of water resources sectors including river runoff, water quality, water temperature, water use and demand, reservoir management and water resource planning and management. The book is unique in that it then presents a series of case studies to both demonstrate the application of climate change impact assessment methodologies and to provide insights to catchment, river basin, and national scale impacts of climate change/fluctuations on the water resources of Africa, Europe, and North America. Audience: Researchers, scholars and students of hydrology and water management who are concerned with the issues of climate change as well as the climate change impact assessment community.
Author: National Research Council Canada Publisher: NRC Research Press ISBN: 9780660157801 Category : Nature Languages : en Pages : 756
Book Description
These documents summarize some of the recent studies of the relationships among climate, the aquatic environment, and the dynamics of fish populations. The studies are mostly from the North Pacific ocean, but there are reports of investigations from the North Atlatic Ocean and from fresh water. Various papers include numerous examples of the relationships between fish abundance trends and the environment.
Author: John S. Gulliver Publisher: Springer Science & Business Media ISBN: 1461457319 Category : Science Languages : en Pages : 375
Book Description
What happens when a chemical is released into the environment? It diffuses, disperses, adsorbs, reacts, and/or changes state. To predict and analyze this process, the mathematics of diffusion is applied to lakes, rivers, groundwater, the atmosphere, the oceans, and transport between these media. A sustainable world requires a deep understanding of the transport of chemicals through the environment and how to address and harness this process. This volume presents a succinct and in-depth introduction to this critical topic. Featuring authoritative, peer-reviewed articles from the Encyclopedia of Sustainability Science and Technology, Transport and Fate of Chemicals in the Environment represents an essential one-stop reference for an audience of researchers, undergraduate and graduate students, and industry professionals.
Author: Tamim Younos Publisher: Springer ISBN: 3642375863 Category : Science Languages : en Pages : 233
Book Description
This volume presents nine chapters prepared by international authors and highlighting various aspects of climate change and water resources. Climate change models and scenarios, particularly those related to precipitation projection, are discussed and uncertainties and data deficiencies that affect the reliability of predictions are identified. The potential impacts of climate change on water resources (including quality) and on crop production are analyzed and adaptation strategies for crop production are offered. Furthermore, case studies of climate change mitigation strategies, such as the reduction of water use and conservation measures in urban environments, are included. This book will serve as a valuable reference work for researchers and students in water and environmental sciences, as well as for governmental agencies and policy makers.
Author: Midhat Hondzo
Author: Midhat Hondzo
Author: Midhat Hondzo
Author: Glen George
Author: Jorg Imberger
Author: 
Author: Ramesh D. Gulati
Author: Zdzislaw Kaczmarek
Author: National Research Council Canada
Author: John S. Gulliver
Author: Tamim Younos