نتایج جستجو برای: maximum and minimum temperature

تعداد نتایج: 16925938  

Journal: :اکو هیدرولوژی 0
مهدی بهرامی استادیار، گروه علوم و مهندسی آب، دانشکدۀ کشاورزی، دانشگاه فسا محمدجواد امیری استادیار، گروه علوم و مهندسی آب، دانشکدۀ کشاورزی، دانشگاه فسا فاطمه رضایی مهارلویی دانشجوی کارشناسی ارشد آبیاری و زهکشی، گروه علوم و مهندسی آب، دانشکدۀ کشاورزی، دانشگاه فسا کرامت الله غفاری مربی گروه فناوری اطلاعات، دانشکدۀ مهندسی، دانشگاه فسا

since many time series are not normal, it is required to normalize data by transformation functions prior to any analysis and modeling. in this study, the next month rainfall of abadeh county station was predicted using the average monthly rainfall, minimum and maximum temperatures and minimum and maximum humidity as inputs of mlp network, both normally and raw, at period 1976 to 2013. after sc...

Journal: :تحقیقات جغرافیایی 0
مهدی مومنی دانشگاه حمید جلیلوند دانشگاه سعید موحدی دانشگاه حجت الله یزدان پناه دانشگاه حسین زارعان دانشگاه

in this study, we aimed to reconstruct the mean, maximum mean and ‎minimum mean temperature from the chronology of tree rings width of two ‎quercus persica sites in dena region, where efficient climatic data have a ‎short period (1982-2011). the duration of common chronology of the sites ‎is 131 years (1881-2011).considering the strong correlation between ‎climatic data and growth rin...

Journal: :مرتع و آبخیزداری 0
حسین آذرنیوند مینا ربیعی حسین ارزانی یونس عصری

with respect to wide distribution of a. sieberi besser in iran, various studies have been done on its habitats and different ecological properties have been referred as effective factors in establishment of this species. in this research, we tried to study the ecological range of a. sieberi and its relationship with vegetative characteristics. therefore, climate properties including annual prec...

Abdol Reza Bahremand Adel Sepehry Ahmad Abedi Servestani Ali Reza Massah Bavani Amir Saadatfar, Hossein Barani

Rangelands are one of the most vulnerable parts concerning the climatechanges‟ impacts. These impacts are even stronger in the arid and semi-arid areas whererangeland ecosystems are in critical conditions. Therefore, it is crucial to figure out theactual dynamics of climate variations on the rangelands. The aim of this research was todetermine climate changes in Khabr rangeland, Kerman, Iran. S...

ژورنال: فیزیک زمین و فضا 2017

The variability of temperature extremes has been the focus of attention during the past several decades and had a great influence on the hydrologic cycle. A long-term, high-quality daily maximum (TX) and minimum temperature (TN) of seven stations was used to determine the spatial and temporal characteristics of extreme temperature events in Lake Urmia Basin in Iran during 1987 to 2014. The RCli...

Journal: :ecopersia 2014
vahid feizi maryam mollashahi manochehr farajzadeh ghasem azizi

analysis of the spatial and temporal trends of precipitation and temperature are pertinent for future development and sustainable management of water resources in a given region. in this paper, we present a study concerning the climatic behavior of two principal observables variables, viz. monthly temperature (maximum and minimum) and mean precipitations obtained from the measurements carried o...

Assessing the Homogeneity of Temperature and Precipitation Data in Iran with Climatic Approach   Extended Abstract: Qualitative evaluation and validation of atmospheric parameters such as precipitation and temperature are the most important condition for statistical analysis in climatic and hydrological researches. In addition, the meteorological and climatological data have a crucial role i...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه سیستان و بلوچستان - دانشکده مهندسی شیمی 1391

attempts have been made to study the thermodynamic behavior of 1,3 butadiene purification columns with the aim of retrofitting those columns to more energy efficient separation schemes. 1,3 butadiene is purified in two columns in series through being separated from methyl acetylene and 1,2 butadiene in the first and second column respectively. comparisons have been made among different therm...

Journal: :iranian journal of public health 0
mohammad baaghideh fatemeh mayvaneh

abstract background: weather and climate play a significant role in human health. we are accustomed to affects the weather conditions. by increasing or decreasing the environment temperature or change of seasons, some diseases become prevalent or remove. this study investigated the role of temperature in cardiovascular disease mortality of city of mashhad in the current decade and its simulatio...

Journal: :اکو هیدرولوژی 0
معصومه نجفی دانشجوی کارشناسی ارشد، گروه مهندسی آب، دانشکدۀ کشاورزی، دانشگاه صنعتی اصفهان، اصفهان وحید عظیمی دانشجوی سابق مهندسی آب، گروه مهندسی آب، دانشکدۀ کشاورزی، دانشگاه تبریز، تبریز محمد شایان نژاد دانشیار گروه مهندسی آب، دانشکدۀ کشاورزی، دانشگاه صنعتی اصفهان، اصفهان

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 ...

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