نتایج جستجو برای: wg modelrequired data for lars

تعداد نتایج: 10893290  

Journal: :Climate Research 2021

Using climate scenarios from only 1 or a small number of global models (GCMs) in change impact studies may lead to biased assessment due large uncertainty projections. Ensemble means projections derived multi-GCM ensemble are often used as best estimates reduce bias. However, it is time consuming run process-based (e.g. hydrological and crop models) using numerous scenarios. It would be interes...

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...

   In the present research, the climate change effect on variation of surface runoff of Zarrinehrud located in the Miandoab plain was investigated. In this direction, the scenarios including A1B, A2 and B1 via LARS-WG downscaling model and with applying the HadCM3 general circulation model and artificial neural network model in two different periods (2046-2065, 2080 -2099) were studied. For thi...

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...

In arid and semiarid regions, water demands of different sectors are related to groundwater resources. Therefore, the assessment of its changes is very important to achieve sustainable development and optimal management of aquifers in the future periods. The aim of this study was to evaluate the effects of climate change on Islamabad aquifer. For this purpose, the output of general circulation ...

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In order to study was to evaluate future climate Fereydunshahr of Isfahan for the next hundred years and its effect on potato production in Fereydunshahr. To forecast future climate conditions in Fereydunshahr were collected daily climate data including maximum and minimum temperature, rainfall and sunshine hours in this region during the period 1982 to 2012. In this study was used to simulate ...

Journal: Desert 2014

This study aims to evaluate effects of two downscaling methods; change-factor and statistical downscaling on therunoff of the Azam-Harat River located at Yazd province (with an arid climate) of Iran, under the A2 emission scenariofor the period of 2010-2039. For this purpose, CGCM3-AR4 model; a rainfall-runoff conceptual model, IHACRES; twodownscaling models, Change Factor and LARS-WG were appl...

ژورنال: :جغرافیا و برنامه ریزی 0
اسداله خورانی دانشیار گروه جغرافیا، دانشگاه هرمزگان زهرا جمالی دانشجوی دکتری بیابان زدایی، دانشگاه علوم کشاورزی و منابع طبیعی گرگان.

هدف از این تحقیق بررسی و مقایسه شدت خشکسالی در شرایط تغییراقلیم در دو ایستگاه بندرعباس (خشک) و شهرکرد (نیمه­خشک) است. به این منظور داده های روزانه بارش، ساعت آفتابی، دمای کمینه و بیشینه مورد استفاده قرار گرفته است. این داده ها به روش آماری و با مدل lars-wg تحت سه سناریوی a1b, a2 وb1 ریزگردانی شده اند. سپس پارامترهای اقلیمی مذکور برای دوره 2040-2011 شبیه سازی شده و اقدام به استخراج شاخص rdi از د...

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