نتایج جستجو برای: precipitation methods

تعداد نتایج: 1926824  

2011
G. Lenderink H. Y. Mok T. C. Lee G. J. van Oldenborgh

Introduction Conclusions References

2014
Erhui Li Xingmin Mu Guangju Zhao Peng Gao Hongbo Shao

Precipitation is very important to the formation of runoff, and studying of runoff variation and its response to precipitation has practical significance to sustainable utilization of water resources. The study used Mann-Kendall test, anomaly accumulation method, and precipitation elasticity of runoff method to analyze the changes in the relation of precipitation and runoff and the contribution...

2015
A. Casanueva S. Kotlarski

Daily precipitation statistics as simulated by the ERA-Interimdriven EURO-CORDEX regional climate model (RCM) ensemble are evaluated over two distinct regions of the European continent, namely the European Alps and Spain. The potential added value of the high-resolution 12 km experiments with respect to their 50 km resolution counterparts is investigated. The statistics considered consist of we...

2007
M. R. Lessard W. Lotko J. LaBelle W. Peria C. W. Carlson F. Creutzberg D. D. Wallis

[1] Auroral substorms are the result of a complex process involving coupling between the solar wind, magnetosphere and ionosphere. In this study, the objective is to understand the processes that precede what is perhaps the most fundamental aspect, the brightening of a preexisting arc at onset. The notion that this brightening provides an indicator of substorm onset remains one of the few aspec...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه سمنان 1392

in the area of vocabulary teaching and learning although much research has been done, only some of it has led to effective techniques of vocabulary teaching and many language learners still have problem learning vocabulary. the urge behind this study was to investigate three methods of teaching words. the first one was teaching words in context based on a traditional method of teaching that is,...

2008
KEVIN L. CROWELL Gerrit Hoogenboom Kevin L. Crowell Ron W. McClendon Walter D. Potter Joel O. Paz Maureen Grasso Sherry Crowell Daniel Shank Bob Chevalier Brian Smith

Precipitation, in meteorology, is defined as any product, liquid or solid, of atmospheric water vapor that is accumulated onto the earth’s surface. Water, and thus precipitation, has a major impact on our daily livelihood. As such, the uncertainty of both the future occurrence and amount of precipitation can have a negative impact on many sectors of our economy, especially agriculture. There is...

2016
Sahand Jorfi Mehdi Ahmadi Samaneh Mirali Raheleh Kujlu

Background: Mature landfill leachate is a complicated mixture which is resistant to biological treatment processes. The treatment of mature landfill leachate by struvite precipitation and Fenton oxidation was the main objective of the current research. Methods: Struvite with the phosphate/ammonia/magnesium molar ratio of 1/1/1.05 was considered during all experiments. Five initial pHs of 3, 4, ...

2014
Xiaomeng Song Jianyun Zhang Amir AghaKouchak Shouraseni Sen Roy Yunqing Xuan Guoqing Wang Ruimin He Xiaojun Wang Cuishan Liu

This study investigates changes in temporal trends and spatial patterns of precipitation in Beijing over the last six decades. These changes are discussed in the context of rapid urbanization and the growing imbalance between water supply and demand in Beijing. We observed significant decreases in precipitation amounts from 1950 to 2012, with the annual precipitation decreasing by 32% at a deca...

2016
Michael J. Aspinwall Philip A. Fay Christine V. Hawkes David B. Lowry Thomas E. Juenger

Aims Variation in precipitation strongly influences plant growth, species distributions and genetic diversity. Intraspecific variation in phenotypic plasticity, the ability of a genotype to alter its growth, morphology or physiology in response to the environment, could influence species responses to changing precipitation and climate change. Despite this, the patterns and mechanisms of intrasp...

Long-term prediction of precipitation in planning and managing water resources, especially in arid and semi-arid countries such as Iran, has a great importance. In this paper, a method for predicting long-term precipitation using weather signals and artificial neural networks is presented. For this purpose, climatic data (large-scale signals) and meteorological data (local precipitation and tem...

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