نتایج جستجو برای: daily and monthly scales

تعداد نتایج: 16847680  

Amerian, Yazdan , Ebrahimipour, Monavar , Raoofian Naeeni, Mehdi ,

  In this paper, two-dimensional deformation analysis of the Gotvand-Olya dam is done using daily, monthly, seasonal and annual displacement vectors derived from permanent observations of the dam geodetic monitoring network.  The strain tensor and its invariant parameters like dilatation and maximum shear are computed as well. Nonlinear finite element interpolation based on C1 Cubic Bezier int...

Journal: :Theoretical and Applied Climatology 2022

In this work, we test and improve an algorithm proposed in previous studies to generate synthetic series of plausible solar years (PSY). The method provides 100 coupled global horizontal irradiance (GHI) direct normal (DNI) 1-min resolution. uses 10–20 hourly GHI + DNI datasets that can be retrieved for most the locations world from satellite estimates. consists three steps. first step, use pro...

Journal: :International Journal of Astronomy and Astrophysics 2023

This study aimed to investigate the relationship between atmospheric conditions and cosmic ray (CR) muons using daily monthly CR data collected by KAAU muon detector in Jeddah, Saudi Arabia 2007 2012. Specifically, examined effects of pressure, air temperature, relative humidity on at different time scales (annual, seasonal, monthly). The results analysis revealed that pressure temperature had ...

Journal: :The Journals of Gerontology Series B: Psychological Sciences and Social Sciences 2007

Journal: :آب و خاک 0
سید حسین ثنایی نژاد سمیرا نوری سید مجید هاشمی نیا

abstract evapotranspiration (et) determination is a key factor for irrigation scheduling, water balance, irrigation system design and management and crop yields simulation. therefore many scientists have tried to estimate evapotranspiration in different spatial and temporal scales. remote sensing is a one of new technique in estimation of et in regional scales. so, in this study it’s tried to e...

Journal: :Civil Engineering Dimension 2021

Climate change impacts have gained great attention to be studied in various fields. In this paper, an investigation of rainfall pattern is performed using three statistical methods, i.e., simple linear regression, t-test, and Mann-Kendall’s test. The analysis at 10- 20-year time scales daily, monthly, annual Flores Island, a dry region Indonesia. general, increasing monthly trend detected the r...

2013
Jianhua Xu Yaning Chen Weihong Li Zuhan Liu Chunmeng Wei Jie Tang

Based on the observed data from 51 meteorological stations during the period from 1958 to 2012 in Xinjiang, China, we investigated the complexity of temperature dynamics from the temporal and spatial perspectives by using a comprehensive approach including the correlation dimension (CD), classical statistics, and geostatistics. The main conclusions are as follows (1) The integer CD values indic...

2012
Songhao Shang

Crop water requirement is essential for agricultural water management, which is usually available for crop growing stages. However, crop water requirement values of monthly or weekly scales are more useful for water management. A method was proposed to downscale crop coefficient and water requirement from growing stage to substage scales, which is based on the interpolation of accumulated crop ...

Journal: :جنگل و فرآورده های چوب 0
رضا اولادی دانشگاه تهران، گروه علوم و صنایع چوب و کاغذ، دکترای علوم و صنایع چوب و کاغذ سعیده نصیریانی گروه علوم و صنایع چوب و کاغذ دانشکده منابع طبیعی، دانشگاه تهران، کرج افشین دانه کار دانشیار، گروه مهندسی محیط زیست، دانشکده منابع طبیعی دانشگاه تهران، کرج کامبیز پورطهماسی دانشیار، گروه علوم و صنایع چوب و کاغذ، دانشکده منابع طبیعی دانشگاه تهران، کرج

although in the recent years, the effect of ground water level on radial growth of black alder has attacked attentions of scientist but to comprehensively interpret the results of such studies, we need to investigate the independent influence of climate on ring width and other wood anatomical features of this species. hence, in current study, the influence of climatic factors on the annual ring...

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