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Evapotranspiration

Xem 1-20 trên 90 kết quả Evapotranspiration
  • 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.

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  • The potential evapotranspiration can be directly calculated by the Penman-Monteith equation, known as the one-step method. The approach requires data on the land cover and relatedvegetation parameters based on AVHRR and LDAS information, which are available in recent years. The Nong Son Basin, a sub-catchment of the Vu Gia - Thu Bon Basin in the Central Vietnam, is selected for this study. To this end, NAM model was used; the obtained results show that the NAM model has a potential to reproduce the effects of potential...

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  • The purposes of this study were to develop a dual crop coefficient (Kc) using FAO-56 methodologies and to compare crop evapotranspiration (ETc) measured under field conditions for second-crop silage maize in the Southeastern Anatolia Region of Turkey with the ETc estimated using FAO-56 dual Kc methodologies.

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  • The quantification of evapotranspiration and soil evaporation is crucial for agricultural water management. The FAO56 Penman–Monteith and E-DiGOR models were used to compute reference evapotranspiration (Eto) and bare soil evaporation, respectively, at 17 meteorological stations of South Korea, from 1980 to 2009.

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  • The reference evapotranspiration (ETo) is an important agrometeorological parameter which has been used in a number of applications. In present study daily ETo was determined for seven districts of Marathwada region having long period (29-35 years) weather data by Hargreaves method. The Kc values for kharif sorghum, maize and pearlmillet as given in FAO-56 paper was used to calculate the daily crop water requirement (ETc). The results revealed that, ETo reaches to its peak value during 28th April to 18th May at all the districts of marathwada region.

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  • The reference evapotranspiration (ET0) of Morena station was estimated using multiple linear regression (MLR), The climatological data such as maximum temperatures, minimum temperature, mean relative humidity, wind speed and solar radiation were collected for the morena station and district of Madhya Pradesh state of India for the period of thirty years and the missing value of that data series was also determine using SPSS-21 software. The observed reference evapotranspiration (ET0) values were estimated using the Penman monteith (FAO56-PM) equation.

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  • The study was conducted in Shipra river basin to determine actual evapotranspiration in the area. Long term daily meteorological data including rainfall, maximum temperature, minimum temperature, relative humidity, wind speed and sunshine hours of Indore IMD station was used as input data in CROPWAT Model 8.0. The potential evapotranspiration was converted into actual evapotranspiration by using the crop coefficient. Reference evapotranspiration is a measure of evaporative demand, while the crop coefficient accounts for crop characteristics and management practices (e.g.

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  • Progressive increase in urban area, more particularly with construction of buildings is reducing the availability of land for agriculture. The demand for food is also rapidly increasing with increase in population. Hence, it is difficult to feed the growing population with limiting land resources. In that context, there is ample scope for rooftop cultivation to solve the problem of land shortage for agricultural production. Proper irrigation scheduling for crops grown on rooftops is yet to be established. Irrigation scheduling is only possible by knowing the actual crop evapotranspiration.

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  • Rice is the world's most consumed cereal grain, making up the dietary staple food of more than 60 percent of the world's population. For agriculture dominated country like India, the assessment of rice yield is of utmost importance for policy makers in managing the food security and water resources.

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  • For accurate computation of crop water requirement, precise and globally acceptable method of estimating tall crop reference evapotranspiration i.e. Penman-Monteith was recommended by many authors. The method predicts tall crop reference evapotranspiration based on different climatic parameters. In present study, Penman-Monteith reference evapotranspiration at Udaipur station for period of 1991-2010 was calculated for tall crop reference surface.

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  • Agricultural planning relying on evapotranspiration suffers due to inaccuracy in its estimation. The non-availability of meteorological parameters required for accurate estimation of reference evapotranspiration (ETo) resulted in the development of different methods of ETo estimation. The present study compares various universally accepted methods of ETo estimation by considering the Penman Monteith (FAO 56 PENMEN-MONTEITH) as a standard method.

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  • In this study an attempt has been made to calculate reference crop evapotranspiration (ETo) by different methods using DSS_ET model and compared with that of FAO 56- Penman Monteith method (Smith et al., 1991, Rohitashw et al., 2011) under humid conditions of Pusa.

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  • The book describes the design, construction, and maintenance of innovative ET covers for landfills and waste. The author discusses why several vegetative covers have failed and provides simple, inexpensive solutions. He examines the design and construction of ET covers and other methods, highlighting their differences and successful alternative construction methods. The text contains the first proposed performance measurements for conventional and innovative landfill covers based on the data collected at more than fifty-five sites.

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  • Evapotranspiration Covers Landfills Waste Sites Victor L. Hauser for and Boca Raton London New York CRC Press is an imprint of the Taylor & Francis Group, an informa business © 2009 by Taylor & Francis Group, LLC CRC Press Taylor & Francis Group 6000 Broken Sound Parkway NW, Suite 300 Boca Raton, FL 33487-2742 © 2009 by Taylor & Francis Group, LLC CRC Press is an imprint of Taylor & Francis Group, an Informa business No claim to original U.S.

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  • Tham khảo tài liệu 'evapotranspiration remote sensing and modeling part 9', khoa học tự nhiên, công nghệ sinh học phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả

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  • Tham khảo tài liệu 'evapotranspiration remote sensing and modeling part 8', khoa học tự nhiên, công nghệ sinh học phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả

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  • Tham khảo tài liệu 'evapotranspiration remote sensing and modeling part 7', khoa học tự nhiên, công nghệ sinh học phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả

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  • Tham khảo tài liệu 'evapotranspiration remote sensing and modeling part 12', khoa học tự nhiên, công nghệ sinh học phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả

    pdf30p 1810241198710 22-02-2012 35 5   Download

  • Tham khảo tài liệu 'evapotranspiration remote sensing and modeling part 13', khoa học tự nhiên, công nghệ sinh học phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả

    pdf30p 1810241198710 22-02-2012 40 5   Download

  • Tham khảo tài liệu 'evapotranspiration remote sensing and modeling part 1', khoa học tự nhiên, công nghệ sinh học phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả

    pdf30p 1810241198710 22-02-2012 36 4   Download

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