نتایج جستجو برای: minimum temperature and sunshine therefore

تعداد نتایج: 16914714  

Journal: :آب و خاک 0
زارع ابیانه زارع ابیانه قاسمی قاسمی بیات ورکشی بیات ورکشی معروفی معروفی

abstract evapotranspiration as one of the important elements in agriculture has a considerable role in water resource management. therefore, using a more exact estimation method is an essential step of agricultural development, especially in arid semi-arid area. in this research, in order to exact estimate of garlic evapotranspiration using lysimeteric data, an artificial neural network (ann) m...

ژورنال: علوم آب و خاک 2012
سید مجید میرلطیفی, , کامیار بیات, ,

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...

Journal: :International Journal of Climate Change Strategies and Management 2020

Journal: :desert 2014
nozar ghahreman mahsa sameti

evaporation is a fundamental parameter in the hydrological cycle. this study examines the performance of m5model tree and artificial neural network (ann) models in estimating potential evapotranspiration calculated bypenman- monteith and hargreaves- samani equations. daily weather data from two meteorological stations in asemi-arid climate of iran, namely kerman and zahedan, were collected duri...

2010
ALI ASSI MAITHA Al SHAMISI MOHAMMED JAMA

Measured air temperature, relative humidity, wind and sunshine duration measurements between 1995 and 2007 for Al Ain city in United Arab Emirates (UAE) were used for the estimation of monthly average daily global radiation on horizontal using Artificial Neural Network technique. Weather data between 1995 and 2006 were used for training the neural network, while the data of year 2007 was used f...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه یزد - دانشکده جغرافیا 1392

the west of esfahan province, iran, is one of the most important agricultural areas throughout the country due to the climate variability and life-giving water of zayanderood river. rice is one of the major and economic crops in this area. the most important climatic elements in agricultural activities which should be considered include temperature, relative humidity, precipitation and wind. so...

Journal: :Agronomy 2023

Climate change has become the biggest global challenge, being a real danger especially for crops and an inevitable threat to food security. This paper presents results of study conducted in Transylvanian Plain during 2012–2021, regarding influence climatic factors, such as temperature, rainfall, water reserve soil hours sunshine, on development stages yield maize. During determined maize cultiv...

2014
Miles D. Witham Peter T. Donnan Thenmalar Vadiveloo Falko F. Sniehotta Iain K. Crombie Zhiqiang Feng Marion E. T. McMurdo

BACKGROUND Weather is a potentially important determinant of physical activity. Little work has been done examining the relationship between weather and physical activity, and potential modifiers of any relationship in older people. We therefore examined the relationship between weather and physical activity in a cohort of older community-dwelling people. METHODS We analysed prospectively col...

Journal: :چغندرقند 0
حمیدرضا احمدزاده اراجی دانشجوی کارشناسی‪ارشد هواشناسی کشاورزی، دانشگاه آزاد اسلامی واحد علوم و تحقیقات - محمد عبدالهیان نوقابی دانشیار مؤسسه تحقیقات چغندرقند

in order to study the reason for the prominent increase of the average of sugar content in sugar beet produced in iran in 2007 and finding the relation of this increase with climatic parameters, chenaran sugar factory district was chosen. due to precise and reliable statistical data of sugar factory during the campaign and weather data, chenaran sugar factory was chosen for this investigation. ...

Journal: Desert 2014

Evaporation is a fundamental parameter in the hydrological cycle. This study examines the performance of M5model tree and artificial neural network (ANN) models in estimating potential evapotranspiration calculated byPenman- Monteith and Hargreaves- Samani equations. Daily weather data from two meteorological stations in asemi-arid climate of Iran, namely Kerman and Zahedan, were collected duri...

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