نتایج جستجو برای: hourly evapotranspiration
تعداد نتایج: 16051 فیلتر نتایج به سال:
Salati and Nobre (1990), in a review of the basinscale water vapor budget of the Amazon Basin analyzed by previous studies, pointed out that evapotranspiration accounts for more than 50% of precipitation. This estimate was later confirmed by Nobre et al. (1991) using the water vapor budget of several studies with various horizontal scales within the Amazon Basin. Note that total evapotranspirat...
Abstract In order to determine the actual evapotranspiration of tomato in the greenhouse, crop and soil-water stress coefficients were surveyed. To compare the actual evapotranspiration at different irrigation intervals (1, 2, 4, 6 and 8-day), a completely randomized blocks design with four replications was performed. The present study was carried out in a greenhouse covered by 4 mm thick glas...
abstract evapotranspiration (et) is one of the most important components of the water balance, it is also one of the most difficult to measure. despite the importance of et, methods to obtain values of et are still limited. conventional methods are very local, ranging from point to field scale. estimates of the et over the entire area, especially for irrigated areas, are essential, as these can...
in this study, climatic parameters are used to evaluate the sensitivity of reference evapotranspiration in isfahan and rasht with two semi-arid and moderate climates using two intelligent methods during 1970-2010. in this research, multi-layer precpetron e (mlp) and gene expression programming (gep) intelligent models are used in order to analyze the sensitivity of reference evapotranspiration ...
This experiment was conducted to determine evapotranspiration, crop coefficient and water use efficiency of cucumber and tomato for a period of six months in the Resarch Greenhouse of Urmia University. Daily evapotranspiration of cucumber, tomato and reference crop was measured using lysimeter method. Based on the results, cucumber evapotranspiration for growth period of 130 days was 272.4 mm a...
The evapotranspiration of the reference Crop is of particular importance due to the changes in climate parameters of temperature, sunlight, humidity and wind speed in combination. the purpose of this study is to investigate the effects of climate change on evapotranspiration of apple during the growing season.For this purpose, the ECMWF database has been used for observation data of Semirom ...
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