نتایج جستجو برای: kendall trend tests
تعداد نتایج: 454958 فیلتر نتایج به سال:
Determining the actual evapotranspiration value and analyzing its temporal trend is essential for optimal water resources management in a basin. In the present paper, the actual evapotranspiration time series is simulated and its trend is analyzed according to the trend of climatic variables and land use in the Ajichi basin during the period of 2015-1987. The comprehensive SWAT model was set up...
BACKGROUND The workers who are working in the open and warm environments are at risk of health effects of climate and heat changes. It is expected that the risk is increase with global warming. This study aimed to investigate the changes of Wet Bulb Globe Temperature (WBGT) index in the past and to predict their trend of future changes in Tehran, capital of Iran. METHODS The meteorological da...
Abstract Background Projecting future streamflow variation or the hydrological impact of climate change plays a pivotal role in sustainable implication planning water resources management. Therefore, this study predicts potential change’s on components Upper Awash Basin (UAB). The applied statistical downscaling model (SDSM) to generate high-resolution data from output Canadian Second Generatio...
The rapid growth in the world population resulted an increase of freshwater needs many sectors. Groundwater is most important source specially for arid and semi-arid regions due to lack surface water sources low precipitation rates those regions. In this study, monthly groundwater quality data were collected from eleven well fields Sharjah over period 2004-2017. Water parameters including bicar...
Precipitation is the only water supply and most important factor affecting vegetation growth on the slopes of semi-arid Loess Plateau of China. Based on precipitation data from 7 synoptic stations in the study area over the period 1957-2012, the trends of precipitation and standardized precipitation index (SPI) were analyzed by using linear regression, Mann-Kendall, and Spearman's Rho tests at ...
In this research, monthly hydrological and daily meteorological data were collected across China for the period 1956–2012. Modified Mann–Kendall tests, double mass curve analysis, and correlation statistics were performed to identify the long-term trends and interrelation of the hydrometeorological variables and to examine the influencing factors of streamflow and sediment. The results are as f...
Drought is one of the most serious problems arising for human societies and ecosystems from climatevariability. This phenomenon causes billions of dollars in global damages annually and affects morepeople than any other form of natural disasters.In this study, the trends of rainfall and meteorological drought time series were investigated at tenstations located in the east of Iran for the perio...
Users are increasingly dependent on decision tools to facilitate their transactions on the internet. Reputation models offer a solution to the users in supporting their purchase decisions. The reputation model takes product ratings as input and produces product quality as score. Most existing reputation models use naïve average method or weighted average method to aggregate ratings. Naïve avera...
This study aims to investigate the trend of water-level changes in lakes (Lake Tuz and Lake Bey?ehir) sinkholes (Timra? K?zören) Konya Closed Basin located Turkey. Water-level these were investigated along with meteorological parameters (precipitation, temperature, evaporation) groundwater trends that indicate climate region. Several statistical tests can be used determine significance hydrolog...
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