نتایج جستجو برای: the average annual rainfall

تعداد نتایج: 16072829  

2017
Mohammad Arab Amiri Mohammad Saadi Mesgari

Spatial and temporal variability analysis of precipitation is an important task in water resources planning and management. This study aims to analyze the spatial and temporal variability of precipitation in the northeastern corner of Iran using data from 24 well-distributed weather stations between 1991 and 2015. The mean annual rainfall, precipitation concentration index (PCI), and their coef...

Journal: :Vector borne and zoonotic diseases 2007
William J Landesman Brian F Allan R Brian Langerhans Tiffany M Knight Jonathan M Chase

Higher-than-average precipitation levels may cause mosquito outbreaks if mosquitoes are limited by larval habitat availability. Alternatively, recent ecological research suggests that drought events can lead to mosquito outbreaks the following year due to changes in food web structure. By either mechanism, these mosquito outbreaks may contribute to human cases of West Nile Virus (WNV) in the re...

Babolroud watershed and Mazandaran province of such as are that in recent years, different extreme events have been happened. On this basis, emphasize necessity to investigate further on impact of climate change on watershed runoff. This work is done by climate change and rainfall-runoff models that able to simulate and calculate of climate changes impact on hydrologic components Including prec...

2005
N. J. Potter L. Zhang P. C. D. Milly T. A. McMahon A. J. Jakeman

[1] An important factor controlling catchment-scale water balance is the seasonal variation of climate. The aim of this study is to investigate the effect of the seasonal distributions of water and energy, and their interactions with the soil moisture store, on mean annual water balance in Australia at catchment scales using a stochastic model of soil moisture balance with seasonally varying fo...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه فردوسی مشهد - دانشکده ادبیات و علوم انسانی دکتر علی شریعتی 1393

the purpose of the present study was to investigate the relationship between fear of negative evaluation (fne) and communication strategies (css) among iranian efl learners. it was aimed to examine the differences in the use of communication strategies between speakers with high or low degree of fear of negative evaluation. the current study was a case study consisting of 10 english learners at...

Journal: :تحقیقات جغرافیایی 0
امیر گندمکار دانشگاه نجف آباد ویکتوریا عزتیان هواشناسی اصفهان محمدباقر بهیار پژوهشکده هواشناسی تهران حسنعلی غیور دانشگاه آزاد اسلامی واحد نجف آباد زهره رجبی دانشگاه آزاد اسلامی واحد نجف آباد

water productivity increase is one of the water management solutions in agriculture and increasing its efficiency. the accurate determination of plants water requirement and the accurate value estimate of evapotranspiration is essential for improving water productivity in irrigation network that it can help to improve water management in agriculture. in this research such climatic elements as t...

Most of the rainfall in arid and semi-arid regions, which becomes runoff immediately after rainfall, eventually evaporates and becomes inaccessible. Harvesting water from impermeable rock surfaces and storage in reservoirs or aquifer feeding is an effective way to prevent evaporation losses in these areas. The purpose of this study is to model the amount of runoff in sub-basins with impermeable...

Journal: :Journal of Geophysical Research: Atmospheres 1997

Journal: :Pest management science 2008
Bernard T Nolan Igor G Dubus Nicolas Surdyk Hayley J Fowler Aidan Burton John M Hollis Stefan Reichenberger Nicholas J Jarvis

BACKGROUND Key climatic factors influencing the transport of pesticides to drains and to depth were identified. Climatic characteristics such as the timing of rainfall in relation to pesticide application may be more critical than average annual temperature and rainfall. The fate of three pesticides was simulated in nine contrasting soil types for two seasons, five application dates and six syn...

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