Empirical formula for estimating the solar radiation at an upland from the sunshine duration data.
نویسندگان
چکیده
منابع مشابه
Global Solar Radiation Estimation Using Sunshine Duration in Nigde
In this paper, several equations were employed to estimate global solar radiation from sunshine hours for a meteorological station in Nigde, Turkey, using only the relative duration of sunshine. These equations included the original Angstrom-Prescott linear regression and modified functions (quadratic, logarithmic and exponential functions). Estimated values were compared with measured values i...
متن کاملتخمین تابش کل خورشیدی روزانه با استفاده از شبکههای عصبی مصنوعی و مقایسه آن با روشهای تجربی در سه ایستگاه شیراز، کرج و رامسر
Global solar radiation (Rs( on a horizontal surface in the estimation of evapotranspiration of plants and hydrology studies is an important factor. Average daily global solar radiation on a horizontal surface was estimated by artificial neural networks (ANNs) and five empirical models including FAO (No.56), Hargreaves-Samani, Mahmood-Hubard, Bahel and Annandale. The weather data was selected fr...
متن کاملEstimating Global Solar Radiation on Horizontal from Sunshine Hours in Abu Dhabi – UAE
Number of mathematical correlations have been used to predict the monthly average global solar radiation on horizontal using the sun hours as an input parameter. The study was carried out on two weather stations in the UAE, which are Abu Dhabi and Al Ain, using a daily weather data recorded for 13 years. The used correlations included the linear Angstrom-Prescott model and its derivations, name...
متن کاملارزیابی دو روش تجربی و مدلهای شبکه عصبی مصنوعی برای برآورد تابش خورشید رسیده به زمین- مطالعه موردی در جنوب شرق تهران
Daily solar radiation intercepted at the earth’s surface is an input required for water resources, environmental and agricultural studies. However, the measurement of this parameter can only be done in a few places. This has led researchers to develop a number of methods for estimating solar radiation based on frequently available meteorological records such as hours of sunshine or air temperat...
متن کاملEstimating hourly incoming solar radiation from limited meteorological data
Frank Forcella USDA-ARS North Central Soil Conservation Research Laboratory, 803 Iowa Avenue, Morris, MN 56267 Two major properties that determine weed seed germination are soil temperature and moisture content. Incident radiation is the primary variable controlling energy input to the soil system and thereby influences both moisture and temperature profiles. However, many agricultural field si...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Japan Society of Hydrology and Water Resources
سال: 1996
ISSN: 0915-1389,1349-2853
DOI: 10.3178/jjshwr.9.468