Results 61 to 70 of about 15,830 (212)

การพัฒนาระบบสนับสนุนการตัดสินใจ ด้านการบริหารจัดการน้ำในพื้นที่ชลประทาน ด้วยวิธี Penman Monteith กรณีศึกษาฝ่ายส่งน้ำและบำรุงรักษาที่ 1 โครงการส่งน้ำและบำรุงรักษาดงเศรษฐี [PDF]

, 2016
การพัฒนาระบบสนับสนุนการตัดสินใจ ด้านการบริหารจัดการน้ำในพื้นที่ชลประทาน ด้วยวิธี Penman Monteith กรณีศึกษาฝ่ายส่งน้ำและบำรุงรักษาที่ 1 โครงการส่งน้ำและบำรุงร ...
เมฆอรุณ, ประสิทธิ์
core   +1 more source

Correlación entre la evaporación en tina y la evaporación calculada en cinco estaciones climatológicas Correlation between pan evaporation and the evapotranspiration calculated from five climatological stations in Venezuela

Bioagro, 2005
Con la finalidad de conseguir fórmulas de evapotranspiración más adaptadas a diferentes zonas de Venezuela, se utilizaron las ecuaciones de Penman-Monteith, Hargreaves, García-López, Thornthwaite y Blaney-Criddle, para correlacionar la ETo con la ...
Raúl Martínez, Millena Ariana Boueri, Pedro Escalona   +2 more
doaj  

Optimizing radiation and temperature models to estimate reference plant evapotranspiration [PDF]

محیط زیست و مهندسی آب
To estimate potential evapotranspiration, many relationships based on the climatic conditions of different regions have been proposed by researchers, which need to be evaluated and calibrated before applying them to specific locations.
Ahad Molavi
doaj   +1 more source

A Holistic Assessment of Water Footprint and Irrigation Performance Indicators With Respect to Agricultural Water Productivity

Irrigation and Drainage, EarlyView.
ABSTRACT Global warming has intensified prolonged droughts in many regions, including Türkiye, resulting in growing pressure on already limited water resources. Agriculture, as the largest water‐consuming sector, faces critical challenges in sustaining productivity under increasing water scarcity. In this context, assessing water use efficiency through
Elifnaz Torun, Belgin Çakmak
wiley   +1 more source

Evapotranspiration Model-based Scheduling Strategy for Baby Pakchoi Irrigation in Greenhouse

HortScience, 2020
Water management is one of the most important operations in greenhouse baby leaf production. However, growers mainly irrigate the plants based on experience, which generally leads to yield loss, uneven quality, and low water-use efficiency.
Doudou Guo, Ziyi Chen, Danfeng Huang, Jingjin Zhang   +3 more
doaj   +1 more source

Critical analysis of the contemporary methods for estimating reference evapotranspiration [PDF]

Glasnik Šumarskog Fakulteta: Univerzitet u Beogradu, 2012
Evapotranspiration is one of the most important processes within the hydrological cycle whose reliable assessment is essential in the planning and managing of land and water resources.
Đukić Vesna, Mihailović Vladislava
doaj   +1 more source

Projections of Meteorological Drought and Potential Evapotranspiration Using the RegCM4 Over Northeastern Iran

International Journal of Climatology, EarlyView.
We downscale CanESM2 with the Regional Climate Model version 4 (20 km) and evaluate against 15 stations to derive monthly PET (Hargreaves–Samani) and SPEI for northeastern Iran (1990–2009, 2040–2059, 2080–2099). Results show robust PET increases and a shift toward more negative monthly SPEI—especially April–September—indicating earlier onset and longer
Nasrin Salehnia, Peter T. Wolter, Sylvester Chikabvumbwa, Fateme Hosseini, Sohrab Kolsoumi, Ali Farid, Hashem Zahedipour   +6 more
wiley   +1 more source

Nonlinearities of Penman and Penman-Monteith Equations across Multiple Timescales

, 2023
The nonlinear Penman and Penman-Monteith equations, widely used for estimating surface evapotranspiration at regional and global scales, were derived from turbulent transport of heat fluxes and thus apply to subhourly scale. However, these equations have been directly applied with hydrometeorological variables averaged at longer time intervals, leading
Han, Yizhi, Calabrese, Salvatore, Du, Huihua, Yin, Jun   +3 more
openaire   +2 more sources

Modification of FAO Penman–Monteith equation for minor components of energy [PDF]

Hydrology Research, 2018
AbstractThe conventional Food and Agriculture Organization of the United Nations (FAO) Penman–Monteith (P-M) equation requires knowledge of the available energy to estimate reference evapotranspiration (ETo); however, it is common to ignore the minor energy components (MECs). This study was conducted to determine the effect of not including the MECs in
John H. Prueger, William E. Eichinger, Arman Varmaghani   +2 more
openaire   +1 more source

Evapotranspiração e coeficientes de cultura do mamoeiro para a região litorânea do Ceará Evapotranspiration and crop coefficients of papaya in the coastal region of Ceará state, Brazil

Engenharia Agrícola, 2004
O objetivo deste trabalho foi estimar a evapotranspiração da cultura do mamoeiro (Carica papaya L.), bem como seus coeficientes de cultura, sob irrigação, utilizando-se de uma linha de emissores para duas linhas de plantio, com um emissor para quatro ...
Afrânio A. T. Montenegro, Francisco M. L. Bezerra, Raimundo N. de Lima   +2 more
doaj   +1 more source