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Friday, April 24, 2020 | History

2 edition of Measurement and estimation of evaporation and evapotranspiration found in the catalog.

Measurement and estimation of evaporation and evapotranspiration

Working Group on Evaporation Measurement

Measurement and estimation of evaporation and evapotranspiration

report of a Working Group on Evaporation Measurement of the Commission for Instruments and Methods of Observation

by Working Group on Evaporation Measurement

  • 342 Want to read
  • 32 Currently reading

Published by Secretariat of the World Meteorological Organization in Geneva .
Written in English

    Subjects:
  • Evaporation (Meteorology),
  • Evapotranspiration

  • Edition Notes

    Statementprepared by M. Gangopadhyaya ... [et al.]. --
    SeriesTechnical note - World Meteorological Organization -- no. 83, WMO -- no. 201. TP. 105, Technical note (World Meteorological Organization) -- no. 83., WMO (Series) -- no. 201.
    ContributionsGangopadhyaya, M.
    Classifications
    LC ClassificationsQC851 .W6447 no.83
    The Physical Object
    Pagination121 p. :
    Number of Pages121
    ID Numbers
    Open LibraryOL26565854M


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Measurement and estimation of evaporation and evapotranspiration by Working Group on Evaporation Measurement Download PDF EPUB FB2

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.

Estimation errors, strengths, weaknesses and applicability of a wide range of evaporation and evapotranspiration estimation methods are presented along with. 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. Get this from a library.

Measurement and estimation of evaporation and evapotranspiration. [World Meteorological Organization. Commission for Instruments and Methods of Observation.]. Distinctions are made (Figure 4) between reference crop evapotranspiration (ET o), crop evapotranspiration under standard conditions (ET c) and crop evapotranspiration under non-standard conditions (ET c adj).ET o is a climatic parameter expressing the evaporation power of the atmosphere.

ET c refers to the evapotranspiration from excellently managed, large, well-watered fields that achieve. Evaporation, Evapotranspiration, and Irrigation Water Requirements is a comprehensive reference to estimating the water quantities needed for irrigation of crops based upon the physics of evaporation and evapotranspiration (ET).

This new edition of which updates and expands the original, provides improved and standardized methods. Evapotranspiration (ET) is the combined process of water surface evaporation, soil moisture evaporation, and plant transpiration.

Stormwater management applications may include water surfaces (e.g., pond, wetland, etc.), vegetation, or both, and therefore may require an estimation of evaporation, transpiration, or both to estimate water level.

Get this from a library. Evaporation and Evapotranspiration: Measurements and Estimations. [Wossenu Abtew; Assefa Melesse] -- The book is a thorough presentation of theoretical and applied aspects of the evaporation and evapotranspiration process supported by data from experimental studies.

It. Request PDF | Evaporation and Evapotranspiration Estimation Methods | Estimation in spite of measurement is the common approach to acquire ET data for most applications. Selection of a.

Evapotranspiration (ET) is a major component of the water cycle, which makes it an integral part of water resources management, especially in arid and semiarid environments.

ET data are used for water management, irrigation scheduling, various modeling activities, and much more. Some areas of scarce water resources place limitations on water use, which are typically determined from various Author: Jerry E.

Moorhead. Abstract. Contemporary methods of evapotranspiration estimation are described in detail, along with transpiration and evaporation. Measurement of evapotranspiration by lysimeters (from bare soil or soil with a canopy) and measurement of evaporation from a water table are by: 5.

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 : Wossenu Abtew.

Abstract. Evapotranspiration is a major term of the soil water balance. Knowing the amount of water directly evaporated from the soil or through transpiration of plants is a point of interest not only for agronomists but for meteorologists, hydrologists and irrigation project by: Green infrastructure (GI) is a common solution for stormwater management in an urban environment, with attached environmental benefits like flood control, urban heat island relief, adaptations to climate change, biodiversity protection, air pollution reduction, and food production.

Evapotranspiration (ET) controls the GI’s hydrologic performance and affects all related by: 1. 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.

Air pressure (low pressure of the surface high rate of evaporation) 5. Soil characteristics (soil texture, soil profile characteristics etc.

At FC – soil characteristics doesn’t affect rate of evaporation) Measurement of Evaporation. Following methods are generally practiced. The term evapotranspiration (ET) is commonly used to describe two processes of water loss from land surface to atmosphere, evaporation and transpiration.

Evaporation is the process where liquid water is converted to water vapor (vaporization) and removed from sources such as the soil surface, wet vegetation, pavement, water bodies. This book is a comprehensive reference tool for estimating the water quantities needed for irrigation of crops based upon the physics of evaporation and evapotranspiration (ET).

This new edition of which updates and expands the original, provides improved and standardized methods to estimate evaporation and ET and to apply and Cited by: Crop evapotranspiration under standard conditions (ET c) Crop evapotranspiration under non-standard conditions (ET c adj) Determining evapotranspiration.

ET measurement ET computed from meteorological data ET estimated from pan evaporation. Part A - Reference evapotranspiration (ET o). When there is no instrumentation available for the direct measurement of lake evaporation, it becomes necessary to use models for its estimation.

The Penman method is considered as one of the most reliable methods for estimating lake evaporation and is discussed in sufficient detail in the chapter. Evapotranspiration (ET) is the sum of evaporation and plant transpiration from the Earth's land and ocean surface to the ation accounts for the movement of water to the air from sources such as the soil, canopy interception, and iration accounts for the movement of water within a plant and the subsequent loss of water as vapor through stomata in its leaves.

Measurement based on the soil water balance B. Measurements at plant scale 1. Sap flow method 2. Chambers system method III. Actual crop evapotranspiration estimation A. The direct estimation of evapotranspiration 1. The main theoretical principles for modelling the evapotranspiration 1.a The Penman theoretical analysis and the physical Cited by: Evaporation, Transpiration, and Evapotranspiration EVAPORATION: It is the loss of free water from soil, lakes, stream oceans etc to the atmosphere.

The transfer of water in the vapor phase from the surface of the soil, open water surfaces, snow and the surface of the vegetation to the atmosphere.

TRANSPIRATION:. Evaporation, Evapotranspiration, and Irrigation Water Requirements by Marvin E. Jensen,available at Book Depository with free delivery worldwide. 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. Evaporation, Evapotranspiration, and Irrigation Requirements is a comprehensive reference to estimating the water quantities needed for irrigation of crops based upon the physics of evaporation and evapotranspiration (ET).

This new edition of which updates and expands the original, provides improved and standardized methods to.

Evapotranspiration is a process performing in the Soil–Plant –Atmosphere System (SPAS); therefore this book is presenting and quantifying it as a catenary process, describing transport of water in the soil, including root extraction patterns and methods of its : GLEAM features the first global implementation of the Gash analytic model for the estimation of evaporation of intercepted rain water (Gash, ; Valente et al., ).

The volume of water that evaporates from the wet canopy during and immediately after Author: Thomas R.H. Holmes. Many US states have tabulated evaporation data measured with evaporation pans.

Some states have computed state-wide estimates of evaporation from shallow ponds and reservoirs (Borrelli et al. Many early studies and reports have also addressed pan evaporation 1 Presented at the CSU/ARS Evapotranspiration Workshop, Fort Collins, CO, Mar File Size: KB.

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 : Springer Netherlands. The problem of estimating evaporation from water surfaces and evapotranspiration (ET) via plants is addressed in this volume.

The use of climatic data is stressed. Recent developments that are covered involve both direct estimation of evapotranspiration and the use of an intermediate step of calculating reference crop evapotranspiration.

Scaling and Estimation of Evaporation and Transpiration of Water across Soil Textures Joseph A. Kozak,* Lajpat R. Ahuja, Liwang Ma, and Tim R.

Green ABSTRACT analysis technique, which is based on the existence of A recent study showed all parameters in the Brooks-Corey equa- physical similarity in the system; and (ii) the empirical. The contribution of variables and the performance of sensors can be evaluated.

The contribution of variables on the ET model could be derived by Equations (10) and (11). In this brief report, one sample of local climate data was used to evaluate the effect of environmental measurement uncertainty on prediction of by: 1. Evapotranspiration (ET) accounts for a substantial amount of the water flux in the arid and semi-arid regions of the World.

Accurate estimation of ET has been a challenge for hydrologists, mainly because of the spatiotemporal variability of the environmental and physical parameters governing the latent heat flux. In addition, most available ET models depend on intensive meteorological Cited by: Book Description and direction 7 Measurement of bright sunshine hours 8 Measurement of atmospheric pressure 9 Measurement of rainfall 10 Measurement of evaporation 11 Measurement of transpiration 12 Measurement of evapotranspiration 13 Estimation of potential evapotranspiration 14 Radiation measuring instruments 15 Estimation of net.

Evaporation during this interval was calculated using six evaporation methods, based on field meteorology, and lake water temperature data.

Actual evaporation determined during a month of a year was estimated using a lake energy budget model, and the estimation was used as reference evaporation for evaluation of the six : Maged Mohamed Abdel Moneim Hussein.

The following [1]-[3] descriptions are quoted from WikiPedia. Evapotranspiration (ET) is the sum of evaporation and plant transpiration from the Earth's land and ocean surface to the atmosphere.

Evaporation accounts for the movement of water to the air from sources such as the soil, canopy interception, and waterbodies. Sections are provided with discussion of water budget measurement techniques for open channel flow, conduit flow, infiltration, evaporation and evapotranspiration, and rainfall.

More information can be found in “Urban Stormwater BMP Performance Monitoring” (U.S. EPA. T P E K E (2) Where, ET= Evapotranspiration EP= Evaporation from the pan K= Monthly Consumptive use of Crop Coefficient obtained from table A1 in Appendix Field Plot Method Measurements of water supplies to the field and changes in the soil moisture contents of field plots are sometimes more dependable for computing seasonal water.

IJRET: International Journal of Research in Engineering and Technology. power costs are high [1]. Zhang et al. () studied the effect of soil water deficit on Evapotranspiration, crop yield. 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 : Springer Netherlands.Buy Evaporation, Evapotranspiration, and Irrigation Water Requirements (Manuals and Reports on Engineering Practice) 2 by Marvin E.

Jensen, Richard G. Allen (ISBN: ) from Amazon's Book Store. Everyday low prices and free delivery on eligible orders.Estimation of large scale evapotranspiration and total water storage in a river basin Appendix Combination of aerodynamic and energy balance methods of computing lake evaporation Appendix Modelling soil moisture wetness Summary of key points in this chapter Problems References 4 Snow and Ice