نتایج جستجو برای: rainfall parameters

تعداد نتایج: 607557  

2009
Muhammad Hasan Ali Baig Ghulam Rasul

Abstract The Eurasian winter and spring snow cover anomalies along with spring snowmelt have been considered as the important factors affecting the Indian summer monsoon rainfall in particular and the Asian summer monsoon rainfall in general. No previous study has been found in which the effects of Eurasian snow cover on the monsoon of Pakistan would have been analyzed. In this study authors tr...

2001
Pierre Y. Julien

Transforms reduce the distributions of surface-runoff and sediment-transport variables to nearexponential distributions typical of rainfall duration and intensity. Two transform parameters are determined from field measurements using either a graphical method or the method of moments. The transforms were tested on both small experimental plots and very large watersheds for the distributions of ...

2012
C. Sherman M. Sternberg Y. Steinberger

Recent regional climate-change models indicated significant changes in the temporal and spatial distribution of rainfall in the Mediterranean-Basin region. Understanding the consequences of rainfall alterations for soil respiration and carbon processing in these regions is essential, considering their crucial functions for soil fertility and ecosystem functioning. Our aim was to evaluate the ef...

ژورنال: علوم آب و خاک 2012
اسماعیل دودانگه, , سعید سلطانی, , علی سرحدی, ,

This study performs trend analysis of hydroclimatic varibles and their possible effects on the water resources variability. Nonparametric Mann-Kendall and spearman tests were used to investigate trend analysis of mean annual and 24-hr maximum rainfall, flood and low flow parameters of 23 hydrometery and 18 synoptic stations in Sefid-Roud basin. The results showed that mean annual and 24-hr rain...

2008
B. KNOPF

In this paper the authors perform an extensive sensitivity analysis of the Indian summer monsoon rainfall to changes in parameters and boundary conditions which are influenced by human activities. For this study, the authors use a box model of the Indian monsoon which reproduces key features of the observed monsoon dynamics such as the annual course of precipitation and the transitions between ...

Nowadays, water supply is more limited and providing water is more difficult due to increasing population and demand for water. Thus, due to rainfall shortage and impacts of drought, the need for forecasting monthly and annual rainfall and flow discharge through time series analysis is acutely felt. One of the key assumption in time series is their static condition. However, hydrological time s...

Journal: :تحقیقات جغرافیایی 0
محمود کاشفی پور دانشگاه شهید چمران اهواز فریدون رادمنش دانشگاه شهید چمران اهواز فریدون رادمنش دانشگاه شهید چمران اهواز علی محمد اخوند علی دانشگاه شهید چمران اهواز محمد رضا گلابی دانشگاه شهید چمران اهواز

because of the increasing importance of supplying water for the country, water resource management is of paramount importance. predicting precipitation, as one of the most important climatic parameters, is especially important in using water supplies. time series can be used to predict precipitation. time series analysis seems to be a suitable tool for such forecasting. the present work studies...

2014
Yaokui Cui

Rainfall interception loss of forest is an important component of water balance in a forested ecosystem. The Gash analytical model has been widely used to estimate the forest interception loss at field scale. In this study, we proposed a simple model to estimate rainfall interception loss of heterogeneous forest at regional scale with several reasonable assumptions using remote sensing observat...

2010
MATTHEW G. SLOCUM WILLIAM J. PLATT BRIAN BECKAGE STEVE L. ORZELL WAYNE TAYLOR

Wildfires are often governed by rapid changes in seasonal rainfall. Therefore, measuring seasonal rainfall on a temporally finescale should facilitate the prediction of wildfire regimes. To explore this hypothesis, daily rainfall data over a 58-yr period (1950–2007) in south-central Florida were transformed into cumulative rainfall anomalies (CRAs). This transformation allowed precise estimatio...

2001
BELLIE SIVAKUMAR RONNY BERNDTSSON KENJI JINNO

The transformation of rainfall into runoff is one of the most important processes in hydrology. In the past few decades, a wide variety of automated or computer-based approaches have been applied to model this process. However, many such approaches have an important limitation in that they treat the rainfall-runoff process as a realization of only a few parameters of linear relationships rather...

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