نتایج جستجو برای: wg model includes daily maximum temperature

تعداد نتایج: 2959045  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهید چمران اهواز - دانشکده مهندسی علوم آب 1393

drought is transient phenomenon , slow , repetitive and integral part of the climate of each region. drought begins with a substantial reduction in precipitation over the long-term average rainfall and over time, reduced soil moisture and surface and ground water resources will continue to decrease. this phenomenon is the most important in bakhtegan basin because of its importance in strategic ...

Journal: :پژوهش های جغرافیای طبیعی 0
سمیرا اخوان استادیار گروه علوم و مهندسی آب، دانشکدة کشاورزی، دانشگاه بوعلی سینا نسرین دلاور دانشجوی کارشناسی ارشد آبیاری و زهکشی، گروه علوم و مهندسی آب، دانشکدة کشاورزی، دانشگاه بوعلی سینا

daily weather information is currently available for about 40000 stations across the world. but, distribution of these stations is relatively uneven in some parts of the world. moreover, there are often large amounts of missing values (schuol and abbaspour, 2007:301). using generated data can help to fill missing or even to correct erroneously measured data (fodor et al., 2010: 91). lars-wg is ...

Journal: :پژوهش های جغرافیای طبیعی 0
سمیرا اخوان استادیار گروه علوم و مهندسی آب، دانشکدة کشاورزی، دانشگاه بوعلی سینا نسرین دلاور دانشجوی کارشناسی ارشد آبیاری و زهکشی، گروه علوم و مهندسی آب، دانشکدة کشاورزی، دانشگاه بوعلی سینا

introduction daily weather information is currently available for about 40000 stations across the world. but, distribution of these stations is relatively uneven in some parts of the world. moreover, there are often large amounts of missing values (schuol andabbaspour, 2007: 301). using generated data can help fill missing or even to correct erroneously measured data (fodor et al., 2010: 91). l...

Journal: :پژوهش های جغرافیای طبیعی 0
بهروز سبحانی دانشیار دانشکدة علوم انسانی، دانشگاه محقق اردبیلی مهدی اصلاحی دانشجوی دکتری آب و هواشناسی، دانشگاه محقق اردبیلی و کارشناس آمار و کنترل داده های مرکز تحقیقات هواشناسی کاربردی تبریز ایمان بابائیان استادیار پژوهشکدة اقلیم شناسی، سازمان هواشناسی کشور، مشهد

introduction linking resolution global climate models to local scale as a micro climatic process is a significant issue. recently, attempts have been made by the climatology scientists to develop dynamics and statistical downscaling methods to express climate change at a local and regional scale. two general techniques are been used for downscaling of the output of general circulation models (g...

Journal: :محیط زیست طبیعی 0
بهمن جباریان امیری دانشگاه تهران، دکترای محیط زیست ایمان فاتحی دانشگاه تهران، کارشناس محیط زیست ناصر محمدزاده دانشگاه تهران، کارشناس محیط زیست

climatological parameters are among the most important ecological capability evaluation criterias, on other hand, climate changes which has intensified in the past decades and has the consequences such as; increases in climatic threshold phenomena like occurrence of horrific floodings, destructive hurricanes, abnormal and sudden colds and heats, untimely rainfalls and heavy snows, widespread dr...

Journal: :نشریه علمی - پژوهشی هیدرولوژی کاربردی 0
maedeh razavi zade karim solaimani esmaeil sailakhori

climate is a complex system which is changing mainly due to the increase of greenhouse gases. because of the importance of climate change and the effects it can have on water resources, in recent years, this topic has been taken into consideration for different basins on earth. the objective of this study is to investigate the effects of climate change and forecasting meteorological variables o...

Esmaeil Sailakhori, Karim Solaimani, Maedeh Razavi Zade,

Climate is a complex system which is changing mainly due to the increase of greenhouse gases. Because of the importance of climate change and the effects it can have on water resources, in recent years, this topic has been taken into consideration for different basins on Earth. The objective of this study is to investigate the effects of climate change and forecasting meteorological variables o...

ژورنال: آبخیزداری ایران 2019

Stochastic weather generators are widely used in different fields such as hydrological applications, environmental management and agricultural risk assessments. In this study, a popular stochastic weather generator, LARS-WG, was used in relation to reproduce observed statistical properties, including, means and variances of monthly precipitation, maximum temperature, minimum temperature and sol...

Various methods developed to convert large-scale data to regional climatic data. In few studies , the results of these methods have been statistically compared. The main purpose of this study was to compare SDSM and LARS-WG models for Downscaling output data of CANE-SM2 and HADGEM2-ES general circulation models under RCP2.6, RCP4.5 and RCP8.5 scenarios. For this study, precipitation, minimum an...

Journal: :جغرافیا و مخاطرات محیطی 0
لادن کاظمی راد حسین محمدی

. introduction most of the warming over the last 50 years has been caused by emissions of carbon dioxide (co2) and other greenhouse gases due to human activities. observed changes in the climate due to increasing greenhouse-gas concentrations have made it essential to investigate these changes. the general circulation model (gcm) is the most current method of investigating climate change studie...

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