Modeling and Analysis of Global Hydrologic Processes and Moist Entropy for Climate with the University of Wisconsin Isentropic-sigma Model
Author: Donald R. Johnson
Publisher:
Published: 1998
Total Pages: 10
ISBN-13:
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MODELING AND ANALYSIS OF GLOBAL AND REGIONAL HYDROLOGIC PROCESSES AND APPROPRIATE CONSERVATION OF MOIST ENTROPY.
Author:
Publisher:
Published: 2007
Total Pages: 7
ISBN-13:
DOWNLOAD EBOOKThe research supported by DOE funding addressed the fundamental issues of understanding and modeling of hydrologic processes in relation to regional and global climate change. The emphasis of this research effort was on the application of isentropic modeling and analysis to advance the accuracy of the simulation of all aspects of the hydrologic cycle including clouds and thus the climate state regionally and globally. Simulation of atmospheric hydrologic processes by the UW hybrid isentropic coordinate models provided fundamental insight into global monsoonal circulations, and regional energy exchange in relation to the atmospheric hydrologic cycle. Inter-comparison of UW hybrid model simulations with those from the NCAR Community Climate Model and other climate and numerical weather prediction (NWP) models investigated the increased accuracies gained in modeling long-range transport in isentropic coordinates and isolated differences in modeling of the climate state. The inter-comparisons demonstrated advantages in the simulation of the transport of the hydrologic components of the climate system and provided insight into the more general problems of simulating hydrologic processes, aerosols and chemistry for climate. This research demonstrated the viability of the UW isentropic-eta model for long-term integration for climate and climate change studies and documented that no insurmountable barriers exist to simulation of climate utilizing hybrid isentropic coordinate models. The results provide impetus for continued development of hybrid isentropic coordinate models as a means to advance accuracies in the simulation of global and regional climate in relation to transport and the planetary distribution of heat sources and sinks.
Modeling and Analysis of Global and Regional Hydrologic Processes and Appropriate Conservation of Moist Entropy
Author: Donald R. Johnson
Publisher:
Published: 2007
Total Pages: 7
ISBN-13:
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Author: American Geophysical Union. Meeting
Publisher:
Published: 2001
Total Pages: 514
ISBN-13:
DOWNLOAD EBOOKIntercomparison of Hydrologic Processes in Global Climate Models
Author: National Aeronautics and Space Administration (NASA)
Publisher: Createspace Independent Publishing Platform
Published: 2018-07-18
Total Pages: 168
ISBN-13: 9781723183539
DOWNLOAD EBOOKIn this report, we address the intercomparison of precipitation (P), evaporation (E), and surface hydrologic forcing (P-E) for 23 Atmospheric Model Intercomparison Project (AMIP) general circulation models (GCM's) including relevant observations, over a variety of spatial and temporal scales. The intercomparison includes global and hemispheric means, latitudinal profiles, selected area means for the tropics and extratropics, ocean and land, respectively. In addition, we have computed anomaly pattern correlations among models and observations for different seasons, harmonic analysis for annual and semiannual cycles, and rain-rate frequency distribution. We also compare the joint influence of temperature and precipitation on local climate using the Koeppen climate classification scheme. Lau, W. K.-M. and Sud, Y. C. and Kim, J.-H. Goddard Space Flight Center ATMOSPHERIC GENERAL CIRCULATION MODELS; CLIMATE MODELS; EVAPORATION; FREQUENCY DISTRIBUTION; HYDROLOGICAL CYCLE; HYDROLOGY MODELS; PRECIPITATION (METEOROLOGY); TEMPERATURE EFFECTS; ATMOSPHERIC MODELS; ATMOSPHERIC TEMPERATURE; CLIMATE; CLIMATOLOGY; HARMONIC ANALYSIS; TEMPERATE REGIONS; TROPICAL REGIONS...
Global Change and Extreme Hydrology
Author: National Research Council
Publisher: National Academies Press
Published: 2011-12-17
Total Pages: 44
ISBN-13: 0309217687
DOWNLOAD EBOOKClimate theory dictates that core elements of the climate system, including precipitation, evapotranspiration, and reservoirs of atmospheric and soil moisture, should change as the climate warms, both in their means and extremes. A major challenge that faces the climate and hydrologic science communities is understanding the nature of these ongoing changes in climate and hydrology and the apparent anomalies that exist in reconciling their extreme manifestations. The National Research Council (NRC) Committee on Hydrologic Science (COHS) held a workshop on January 5-6, 2010, that examined how climate warming translates into hydrologic extremes like floods and droughts. The workshop brought together three groups of experts. The first two groups consisted of atmospheric scientists and hydrologists focused on the scientific underpinnings and empirical evidence linking climate variability to hydrologic extremes. The third group consisted of water managers and decision-makers charged with the design and operation of water systems that in the future must be made resilient in light of a changing climate and an environment of hydrologic extremes. Global Change and Extreme Hydrology summarizes the proceedings of this workshop. This report presents an overview of the current state of the science in terms of climate change and extreme hydrologic events. It examines the "conventional wisdom" that climate change will "accelerate" the hydrologic cycle, fuel more evaporation, and generate more precipitation, based on an increased capacity of a warmer atmosphere to hold more water vapor. The report also includes descriptions of the changes in frequency and severity of extremes, the ability (or inability) to model these changes, and the problem of communicating the best science to water resources practitioners in useful forums.
Distributed Hydrologic Modeling Using GIS
Author: Baxter E. Vieux
Publisher: Springer
Published: 2016-08-19
Total Pages: 270
ISBN-13: 9402409300
DOWNLOAD EBOOKThis book presents a unified approach for modeling hydrologic processes distributed in space and time using geographic information systems (GIS). This Third Edition focuses on the principles of implementing a distributed model using geospatial data to simulate hydrologic processes in urban, rural and peri-urban watersheds. The author describes fully distributed representations of hydrologic processes, where physics is the basis for modeling, and geospatial data forms the cornerstone of parameter and process representation. A physics-based approach involves conservation laws that govern the movement of water, ranging from precipitation over a river basin to flow in a river. Global geospatial data have become readily available in GIS format, and a modeling approach that can utilize this data for hydrology offers numerous possibilities. GIS data formats, spatial interpolation and resolution have important effects on the hydrologic simulation of the major hydrologic components of a watershed, and the book provides examples illustrating how to represent a watershed with spatially distributed data along with the many pitfalls inherent in such an undertaking. Since the First and Second Editions, software development and applications have created a richer set of examples, and a deeper understanding of how to perform distributed hydrologic analysis and prediction. This Third Edition describes the development of geospatial data for use in Vflo® physics-based distributed modeling.
Modeling of Hydrologic and Transport Processes in Relation to Climate Change
Author:
Publisher:
Published: 2003
Total Pages:
ISBN-13:
DOWNLOAD EBOOKThe primary objective of this research was to advance the understanding and modeling of climate and climate change. Emphasis was placed on advancing the understanding and modeling of physical processes involving water substances and the transport of trace constituents, and theoretical and diagnostic examination of the limits of global climate predictability imposed by inherent limitations in the simulation of trace constituent transport processes, hydrologic processes and cloud life-cycles. The above objectives were largely addressed through the development and application of a hierarchy of hybrid isentropic coordinate models for numerical simulation of the atmosphere. Over the course of the grant, an evolution of hybrid isentropic coordinate models occurred from a prototype channel model to the full fledge climate model in use today. A premise of this work is that accurate simulation of the long-range transport of mass, momentum, energy, water vapor and other trace constituents is crucial for modeling the climate state.
Climate Modeling for Scientists and Engineers
Author: John B. Drake
Publisher: SIAM
Published: 2014-01-01
Total Pages: 169
ISBN-13: 1611973546
DOWNLOAD EBOOKClimate modeling and simulation teach us about past, present, and future conditions of life on earth and help us understand observations about the changing atmosphere and ocean and terrestrial ecology. Focusing on high-end modeling and simulation of earth's climate, Climate Modeling for Scientists and Engineers presents observations about the general circulations of the earth and the partial differential equations used to model the dynamics of weather and climate, covers numerical methods for geophysical flows in more detail than many other texts, discusses parallel algorithms and the role of high-performance computing used in the simulation of weather and climate, and provides supplemental lectures and MATLAB® exercises on an associated Web page.
Stochastic Climate Models
Author: Peter Imkeller
Publisher: Birkhäuser
Published: 2012-12-06
Total Pages: 413
ISBN-13: 3034882874
DOWNLOAD EBOOKA collection of articles written by mathematicians and physicists, designed to describe the state of the art in climate models with stochastic input. Mathematicians will benefit from a survey of simple models, while physicists will encounter mathematically relevant techniques at work.
