modeling phosphorus in the environment

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Modeling Phosphorus In The Environment

Author : David E. Radcliffe
ISBN : 9781420005417
Genre : Technology & Engineering
File Size : 67. 16 MB
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Despite advances in modeling, such as graphical user interfaces, the use of GIS layers, and databases for developing input files, the approaches to modeling phosphorus (P) have not changed since their initial development in the 1980s. Current understanding of P processes has evolved and this new information needs to be incorporated into the current models. Filling this need, Modeling Phosphorus in the Environment describes basic approaches to modeling P, how the current models implement these approaches, and ways to improve them. The book sets the scene with a review of general approaches to modeling runoff and erosion, P in runoff, leaching of P, stream processes that affect P, and an examination of the important issue of model uncertainty. It describes state-of-the-science watershed-scale P transport models including dynamic semi-disturbed models, models of intermediate complexity, and two lumped models. Phosphorus Indexes (PIs) represent one end of the modeling spectrum and the book takes a comprehensive look at PIs developed in each state, and illustrates some of the problems encountered when incorporating PIs into farm-scale manure management software. The book discusses monitoring data, which is critical for calibrating models, and concludes with suggestions for improving the modeling of P. From researching mechanisms to applying regulations, the uses of phosphorus models have increased as our knowledge of the effects of phosphorus in the environment has increased. Drawing on contributions from experts, the book gives you the tools to select the model that best fits your needs.

Modelling Of Pollutants In Complex Environmental Systems

Author : Grady Hanrahan
ISBN : 9781906799014
Genre : Science
File Size : 36. 57 MB
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Environmental modelling has enjoyed a long tradition, but there is a defined need to continually address both the power and the limitations of such models, as well as their quantitative assessment. This book showcases modern environmental modelling methods, the basic theory behind them and their incorporation into complex environmental investigations. It highlights advanced computing technologies and how they have led to unprecedented and adaptive modelling, simulation and decision-support tools to study complex environmental systems, and how they can be applied to current environmental concerns. This volume is essential reading for researchers in academia, industry and government-related bodies who have a vested interest in all aspects of environmental modelling. Features include: A range of modern environmental modelling techniques are described by experts from around the world, including the USA, Canada, Australia, Europe and Thailand; many examples from air, water, soil/sediment and biological matrices are covered in detail throughout the book; key chapters are included on modelling uncertainty and sensitivity analysis; and, a selection of figures are provided in full colour to enable greater comprehension of the topics discussed

Water Quality Modeling

Author : R. Manivanan
ISBN : 8189422936
Genre : Technology & Engineering
File Size : 22. 44 MB
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Water is an important element for life on the earth. It is an essential natural resource for environmental sustenance. In India, water quality modeling studies are carried out from fresh water to marine water ecosystems. Some of the examples are Tehri reservoir, Chilka lake, Oatcake at Kashmir, Kodaikanal lake, Ooty lake at Tamil Nadu, rivers like Ganges, Narmada, Kaveri, and coastal regions like Hoogly estuary, Paradip, Vishakhapatnam, Kakinada, Chennai, Mangalore coast, Konkan coast and Gujarat coast. Water quality modeling plays a vital role in water quality studies. Numerical models are to be successfully calibrated and properly applied and it is to be improved our understanding of the complex interactions among different parameters such as temperature, biological oxygen demand, dissolved oxygen, salinity, and eutrophication in the fresh water and sea water environment.

Environmental Modeling

Author : Vijay P. Singh
ISBN : 1887201238
Genre : Ecology
File Size : 38. 42 MB
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Environmental Hydraulics And Sustainable Water Management Two Volume Set

Author : J.H.W. Lee
ISBN : 9781482262865
Genre : Science
File Size : 77. 73 MB
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This two-volume set, with cd-rom, comprises the Proceedings of the 4th International Symposium on Environmental Hydraulics & the 14th Congress of Asia and Pacific Division, International Association of Hydraulic Engineering and Research held in December 2004 in Hong Kong. Volume 1 covers the selected papers presented at the 4th International Symposium, while Volume 2 features the advances outlined in papers from the 14th IAHR-APD Congress. Both volumes will be of interest to practitioners and researchers in sustainable water management and environmental science.

Environmental Chemometrics

Author : Grady Hanrahan
ISBN : 9781420067972
Genre : Science
File Size : 67. 30 MB
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Multivariate, heterogeneous data has been traditionally analyzed using the "one at a time" variable approach, often missing the main objective of discovering the relationships among multiple variables and samples. Enter chemometrics, with its powerful tools for design, analysis, and data interpretation of complex environmental systems. Delineating the rigors of modern environmental analysis and how to effectively solve limitations through multivariate approaches, Environmental Chemometrics: Principles and Modern Applications provides an introduction and practical guide to chemometric methods used in environmental chemical analysis. The text begins with an overview of chemometrics in relation to quantitative environmental analysis and a review of descriptive statistical concepts. Building on this, the author covers environmental sampling considerations, experimental design and optimization techniques, multivariate analysis of environmental and chemical data sets, time series analysis, and quality assurance and method validation. Each chapter contains problem-oriented exercises and research applications from the author’s own work and from other experts in the field. The author’s presentation of the basic principles of these methods together with real applications in the field of environmental chemistry makes the comprehension of complex environmental problems and chemically-related concepts more accessible. He covers all major areas of environmental analysis backed by studies from experts in the field. The book is a valuable tool for understanding the rapidly developing world of chemometric methods in environmental analysis.

Lake Champlain Partnerships And Research In The New Millennium

Author : Tom Manley
ISBN : 0306484692
Genre : Science
File Size : 49. 10 MB
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This monograph presents the proceedings of the 2002 Spring Symposium sponsored by the Lake Champlain Research Consortium, hosted by the Missisquoi Bay Watershed Corporation. The book examines this common body of water shared by Canada and the US, and summarizes knowledge of the dynamics of this system with a primary focus on land use, water management, and bridging the gap between researchers and the public.

Hydraulic Modeling

Author : Vijay P. Singh
ISBN : 188720122X
Genre : Technology & Engineering
File Size : 63. 64 MB
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Tools For Assessing Phosphorus Loss From Nordic Agriculture

Author : Edited by: Goswin Heckrath, Marianne Bechmann, Petri Ekholm, Faruk Djodjic, Barbro Ulén, Hans Estrup Andersen and Preben Olsen
ISBN : 9789289312424
Genre : Technology & Engineering
File Size : 22. 7 MB
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The Impact Of Climate Change On European Lakes

Author : Glen George
ISBN : 9048129451
Genre : Science
File Size : 83. 12 MB
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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.

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