Download or read book Thermal Simulation of Lakes written by and published by . This book was released on 1977 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Thermal Simulation of Lakes written by United States. Army. Corps of Engineers. Baltimore District and published by . This book was released on 1974 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Thermal Simulation of Lakes written by Earl E. Eiker and published by . This book was released on 1980 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Thermal Simulation of Lakes with Winter Ice Cover written by J. C. Patterson and published by . This book was released on 1984 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Year round Water Temperature and Dissolved Oxygen Simulation Model for Lakes with Winter Ice Cover written by and published by . This book was released on 1994 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Simulation of Lake Thermal Structure Ice Cover and Fish Habitat in Response to Changing Climate written by Madeline Rosalie Magee and published by . This book was released on 2016 with total page 171 pages. Available in PDF, EPUB and Kindle. Book excerpt: Physical, chemical, and biological properties in lakes are all sensitive to changes in climate, but the interaction and response of these properties to climate changes is not yet fully understood. This dissertation has two main objectives: (1) characterize the role of lake depth and lake surface area on the physical response of water temperature and ice cover to air temperature (AT) and wind speed (WS) changes and (2) determine the response fish habitat to climate-caused changes in the physical parameter of temperature chemical parameter of dissolved oxygen. To fulfill these objectives, a one-dimensional lake hydrodynamic, ice, and water quality model is utilized on three lakes near Madison, WI. Chapter 2 investigates the response of lake water temperatures and stratification to AT increases and WS decreases for three Madison area lakes. Results indicate that surface area is more important than depth when determining the response of water temperature, stratification, and stability and increasing AT and decreasing WS have a cumulative effect for all variables except hypolimnion temperature, where they have opposing influences. Chapter 3 investigates the response of ice cover duration and ice thickness to AT increases for the same three lakes, and results show that lake depth is the greater influence on ice cover response, with shallow lakes being more resilient to changes in AT. Chapter 4 investigates the role of meteorological drivers and water quality drivers on oxythermal habitat of cisco. Results show that summer AT, spring phosphorus load, and spring inflow volume drive habitat loss, but effects of AT increases can be offset by decreases in phosphorus loading. Finally, Chapter 5 develops a novel metric, cumulative oxythermal stress dosage (COSD), to quantify oxythermal habitat of yellow perch in Fish Lake, WI. Results show that COSD is a good predictor of fish declines, COSD values are closely tied to the July -- September AT, and perturbation scenarios identify 3°C AT increase as a possible threshold for yellow perch extirpation.
Download or read book Thermal Energy Analysis of Lakes and Reservoirs written by Richard W. Crain and published by . This book was released on 1973 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Simulation and Observation of Motions and Temperatures in Small and Medium Size Lakes written by Nobuaki Kimura and published by . This book was released on 2007 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Digital Computer Simulation of Thermal Effluent Dispersion in Rivers Lakes and Estuaries written by Richard Blake Codell and published by . This book was released on 1973 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt: IMPLIFIED AND VERTICALLY INTEGRATED INTO DIFFERENT FORMS DEPENDING ON WHETHER THE DISCHARGE WAS OF THE THERMALLY STRATIFIED OR WELL MIXED TYPE. Numerical algorithms were devised to solve the finite difference representations of the simplified conservation equations within the limits of present day digital computers. Extensive linear stability analysis was performed to assure the validity and stability of the numerical solutions. The stratified flow model assumes two distinct layers, an upper thermal layer and a lower ambient layer either stagnant or flowing. The nonstratified model is useful for cases of large bodies of water where there is severe mixing and no appreciable stratification. In both models, the boundaries of the computational grid are completely general and are able to simulate arbitrary shorelines and discharge configurations. (Author).
Download or read book Lakes in Land Surface Models written by Huidong Liu and published by . This book was released on 2013 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation is part of the long-term research towards building a complete surface water representation in the land surface model, in order to quantify the spatial and temporal variations of surface water bodies, especially lakes, and to further understand the role of lakes in the climate system. Changes in lake water storage reflect variations in climate such as changes in precipitation, land surface evaporation, net river discharge, and groundwater storage. However, owing to the lack of a comprehensive surface water observing system, continental-to-global-scale changes in surface water heights and inundation extent remain poorly understood. In the previous study, a Catchment-based Hydrologic And Routing Modeling System (CHARMS) was developed to be run on a catchment-based modeling template, which was modified from the grid-based National Center for Atmospheric Research (NCAR) Community Land Model (CLM). In the CHARMS model, the catchment-based CLM was coupled to a catchment-based river routing model, which simulated the movement of water through river channels and floodplains. However, the lake component was not included in the CHARMS routing system. Moreover, in the CLM model, lakes are considered to have a globally consistent depth of 50m and a constant volume. In this dissertation, a lake model (CHARMS-lake) is implemented in the routing path of CHARMS, with the objective of better representing the surface water system in the land surface model. In Chapter 2 of this dissertation, the CHARMS model is modified. In the previous version of CHARMS model, an explicit representation of lake bodies was missing, with the lakes either ignored from the surface water system or kept constant in storage. In this chapter the routing path for CHARMS is manipulated by adding lakes into the river network. Modeled lake levels for Lake Superior and Lake Victoria are compared with the altimetry data, and the outflow discharge from lake basins is also compared with the model case which assumes no lake in the basin. The performance of NASA's Gravity Recovery and Climate Experiment (GRACE) detecting changes in land water mass is evaluated in Chapter 3, to test its ability of capturing the hydrologic signal from lakes. After removing the hydrologic leakage from the surrounding area, the gridded GRACE TELLUS RL 05 product is scaled over the 16 largest lakes in the world, and compared with the altimetry data for the period of 2003 to 2010. Statistical analysis is performed to find factors that significantly influence the quality of GRACE observations over lakes. Chapter 4 of the dissertation studies the physical properties of lakes, such as thermal expansion, as well as lake bathymetry, in order to better understand their impact on lake level variations. The high resolution bathymetry data for the Great Lakes is integrated and the hypsometric curves for the five lakes are plotted. Thermal expansion of the lakes is estimated using the MODIS surface water temperature data for 6 lakes in two different climate zones. The ratio of thermal expansion to the total amount of lake level change is calculated, indicating that in the tropical regions the impact of thermal expansion can be ignored. This CHARMS-lake model will provide a better understanding of the global hydrologic cycle, and is expected to be coupled to a global scale atmospheric model to study the feedbacks between climate and the terrestrial surface water system.
Download or read book Changing Climate written by National Research Council (U.S.). Carbon Dioxide Assessment Committee and published by National Academies. This book was released on 1983 with total page 528 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Development of Thermal Models for Hungry Horse Reservoir and Lake Koocanusa Northwestern Montana and British Columbia written by Rodger F. Ferreira and published by . This book was released on 1992 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Simulation of Hydrodynamics Temperature and Dissolved Oxygen in Bull Shoals Lake Arkansas 1994 1995 written by Joel M. Galloway and published by . This book was released on 2003 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book On the Rate of Transfer of Heat Between a Lake and an Ice Sheet written by P. F. Hamblin and published by . This book was released on 1987 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Impact of Climate Change on European Lakes written by Glen George and published by Springer Science & Business Media. This book was released on 2009-11-27 with total page 517 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Simulation of the Formation and Propagation of the Thermal Bar on Lake Ontario written by Dilkushi Anuja de Alwis and published by . This book was released on 1999 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Computer-based, mathematical models that simulate spatially distributed and time dependent environmental processes are increasingly recognized to provide diagnostic and productive outputs for the assessments of environmental factors. Mathematical models have been utilized since 60's to study the water quality, the circulation structure and the seasonal changes of large water bodies such as the Great Lakes. Analysis of changes in water quality related to seasonal cycles such as the formation and the propagation of the thermal bar requires spatial and temporal models, with high resolution. The overall objective of this study was to integrate geo-referenced site-specific spatial data to a 3D hydrodynamic model (ALGE) and compare the outputs with geo-referenced remotely sensed thermal imagery. The motivation of this work is based on the idea that the spatial data provides a significant advantage of equipping the model with site specific data to manipulate site specific circulation patterns. Further since the input is geo-referenced and site specific, the output can be directly compared to geo-referenced remotely sensed imagery for model validation. Thus, the aspect of integration of spatial data to hydrodynamic models is an obvious and promising approach to study lake-wide hydrodynamic processors and seasonal changes. A specific objective of the study was to examine how different spatial patterns and weather conditions influence the formation and the propagation of the thermal bar temporally and spatially. Several preliminary studies were conducted on square lakes and lakes with false bathymetric profiles, and compared with the results of laboratory studies and field surveys. Since the outputs compared well with the literature, bathymetric data of Lake Ontario was integrated to the 3D hydrodynamic model with real time surface and atmospheric weather data. The formation and the propagation of the thermal bar was simulated for the years 1997, 1998, 1999 and 1997 (winter) through 1998(fall). The model was fine tuned by changing the initial conditions and weather data to obtain a good approximation to the surface temperature derived from satellite imagery using the split and dual window technique. The lake was also subjected to different weather conditions to study its influences on the formation and propagation of the thermal bar. The model outputs from case studies as well as comparisons of the model output with satellite imagery and the NOAA forecasting model are discussed."--Abstract.
Download or read book Response of Larval Lake Whitefish Coregonus Clupeaformis to Thermal Simulation of Once through Cooling Regimes written by T. G. Dunstall and published by . This book was released on 1978 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt:
