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Author: Norman J. Rosenberg
Publisher:
ISBN:
Category : Droughts
Languages : en
Pages : 80
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Book Description
Author: Norman J. Rosenberg
Publisher:
ISBN:
Category : Droughts
Languages : en
Pages : 80
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Book Description
Author: Pradeep Wagle
Publisher: MDPI
ISBN: 3039216023
Category : Technology & Engineering
Languages : en
Pages : 240
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Book Description
Evapotranspiration (ET) is a critical component of the water and energy balances, and the number of remote sensing-based ET products and estimation methods has increased in recent years. Various aspects of remote sensing of ET are reported in the 11 papers published in this book. The major research areas covered by this book include inter-comparison and performance evaluation of widely used one- and two-source energy balance models, a new dual-source model (Soil Plant Atmosphere and Remote Sensing Evapotranspiration, SPARSE), and a process-based model (ETMonitor); assessment of multi-source (e.g., remote sensing, reanalysis, and land surface model) ET products; development or improvement of data fusion frameworks to predict continuous daily ET at a high spatial resolution (field-scale or 30 m) by fusing the advanced spaceborne thermal emission reflectance radiometer (ASTER), the moderate resolution imaging spectroradiometer (MODIS), and Landsat data; and investigating uncertainties in ET estimates using an ET ensemble composed of several land surface models and diagnostic datasets. The effects of the differences between ET products on water resources and ecosystem management were also investigated. More accurate ET estimates and improved understanding of remotely sensed ET products are crucial for maximizing crop productivity while minimizing water losses and management costs.
Author: Elizabeth Lamb
Publisher:
ISBN: 9781632390066
Category :
Languages : en
Pages : 0
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Book Description
Evapotranspiration is the total water loss by plants to atmosphere in the form of transpiration and evaporation. Specialists in the field of evapotranspiration with extensive expertise have collaborated to bring forth this text which elaborates the latest developments in physics of the processes of evaporation and evapotranspiration. With path-breaking and up-to-date research on methods and templates used globally, it presents the role of modern technology and instrumentation. Those who read or refer to this text will benefit vastly from the in-depth analysis and the diverse backgrounds and setups, where the models, utilization and methods have been put to test. Numerous factors affect and influence the perceived and actual demand of water by the atmosphere. This book presents not only the information to improve the procedures for estimating evapotranspiration, but also provides students and scientists with pathways to interpret, manage and evaluate the observed data.
Author: G. W. Kite
Publisher: IWMI
ISBN: 9290904127
Category : Evapotranspiration
Languages : en
Pages : 41
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Book Description
An overview of an experiment in which 8 different methods of estimating actual evaporation and transpiration were compared using a common database. Methods based on field data, hydrological models, and satellite data were used and the objectives were to compare results and to assess the utility of each method for various applications.
Author: José A. Sobrino
Publisher: Anaya -Spain
ISBN: 9788437055152
Category : Science
Languages : en
Pages : 1056
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Book Description
Author: Stavros Alexandris
Publisher: BoD – Books on Demand
ISBN: 9535111159
Category : Science
Languages : en
Pages : 288
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Book Description
Evapotranspiration - An Overview contains recent advances in the physics of evaporation and transpiration from a typical experimental site to large scale areas. It incorporates many years of authors experience with the latest research on the methods and the models used worldwide, engaging advanced technology and modern instrumentation. The reader benefits from the in-depth analysis and the diverse sites and settings, where the models, applications and methods are tested. Weather conditions, soil moisture, geology, climatic systems are examined for their role and influence on the theoretical and actual water demand by the atmosphere in the earth's ecosystem. This book not only provides students and scientists with the information to improve the procedures for estimating evapotranspiration, but will also help them to manage and evaluate the observed data.
Author: Clayton S. Lewis
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
This research focused on estimating evapotranspiration (i.e., the amount of water vaporizing into the atmosphere through processes of surface evaporation and plant transpiration) under both theoretical and actual conditions. There were two study areas involved: one, on a large scale where 704 agriculturally-representative, electronic weather stations were used to evaluate the drivers and calculated reference evapotranspiration of a NASA gridded weather forcing model in the 17 western states in the contiguous U.S.; and two, transpiration of invasive saltcedar (Tamarix sp.) in the floodplain of the lower Colorado River, California, with Bowen ratio, eddy covariance, and groundwater fluxes. In this study, a fire destroyed the saltcedar forest, which allowed comparison of evapotranspiration before and after\ this event Comparison of the input weather parameters showed some variance between the electronic weather stations and the gridded model, but calculated reference evapotranspiration performed well by relying on the better input and more highly weighed variables of air temperature and downward shortwave radiation. Only in the southern portions of California, Arizona, and New Mexico were the evapotranspiration estimates using the gridded dataset not well correlated with the electronic weather stations and not recommended for prediction. Saltcedar evapotranspiration was found to match more recent and conservative estimates for the phreatophyte than what was historically portrayed in the literature. Horizontal advection from the surrounding desert was also observed to affect the riparian energy balance. Annual average total evapotranspiration before a fire varied from 0.60-1.44 meters/year to 0.25-1.00 meters/year post fire.
Author: Salah Er-Raki
Publisher: Nova Science Publishers
ISBN: 9781624171383
Category : Evapotranspiration
Languages : en
Pages : 0
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Book Description
Evapotranspiration (ET) is the total amount of water lost by plant transpiration and soil evaporation. Since about 90% of precipitation received in semi-arid and sub-humid climates is lost to the atmosphere through evapotranspiration, accurate estimations of ET are of crucial need for climate studies, weather forecasts, hydrological surveys, ecological monitoring, and water resource management. This book reviews research on new developments in all areas of evapotranspiration application. It examines the evapotranspiration processes under different environmental and climatic conditions as well as the different methods for modeling and measurement of evapotranspiration at both local and regional scales.
Author: Megh R Goyal
Publisher: CRC Press
ISBN: 1926895584
Category : Science
Languages : en
Pages : 630
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Book Description
This book covers topics on the basic models, assessments, and techniques to calculate evapotranspiration (ET) for practical applications in agriculture, forestry, and urban science. This simple and thorough guide provides the information and techniques necessary to develop, manage, interpret, and apply evapotranspiration ET data to practical applications. The simplicity of the contents assists technicians in developing ET data for effective water management.
Author: Wossenu Abtew
Publisher: Springer Science & Business Media
ISBN: 9400747373
Category : Science
Languages : en
Pages : 219
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Book Description
The book is a thorough presentation of theoretical and applied aspects of the evaporation and evapotranspiration process supported by data from experimental studies. It is written in a way that the theoretical background of evaporation and evapotranspiration estimation is presented in a simplified manner, comprehensive to most technical readers. The book deals with details of meteorological parameters and monitoring sensors which are needed for estimating evaporation and evapotranspiration. Errors in meteorological parameter measurements are also presented. Estimation errors, strengths, weaknesses and applicability of a wide range of evaporation and evapotranspiration estimation methods are presented along with samples of application to a certain region. Application of newer simpler methods is presented. A new technology, remote sensing application to evaporation and evapotranspiration estimation, is presented. The latest interest in the subject, climate change and evapotranspiration is presented in the last chapter. This book will be beneficial to students, hydrologists, engineers, meteorologists, water managers and others.
