نتایج جستجو برای: precipitation amount

تعداد نتایج: 309043  

Journal: :Journal of Agricultural Meteorology 1959

Journal: :Journal of the Meteorological Society of Japan. Ser. II 1932

2008
Weijun Shen G. Darrel Jenerette Dafeng Hui Richard P. Phillips Hai Ren

[1] Predicted precipitation regime changes in arid ecosystems have the potential to alter soil C balance, but the influence of changes in different aspects of precipitation (amount, seasonality, and intensity) and the factors contributing to such effects are poorly understood. We used a process-based ecosystem model (PALS) that was modified, parameterized, and evaluated for a Mojave Desert ecos...

Journal: :تحقیقات جغرافیایی 0
حسنعلی غیور حسنعلی غیور حسنعلی غیور سید ابوالفضل مسعودیان سید ابوالفضل مسعودیان مجید آزادی مجید آزادی

to identify temporal and spatial precipitation models in the southern coasts of caspian sea, principle component analysis (pca) and clustering analysis (ca) were used. in this study, using daily precipitation data, measure of central tendency, statistical dispersion and percentages of three variables of duration, amount and intensity of precipitation events in 46 synoptic, climatic and rain gau...

2016
Xiaoyan Zhang Meixian Liu Athanasios Loukas

The Dongting Lake Basin (DTLB) of China is a flood prone area. Knowledge of the spatiotemporal characteristics and risks of precipitation extremes is essential for flood mitigation. Based on the precipitation amount (R), precipitation intensity (Ri), max 1 day precipitation amount (Rx1) and max 5 day precipitation amount (Rx5), this study analyzed the spatial-temporal patterns, risks and invest...

In this research, for analysis the spatial- temporal changes of precipitation in Iran, the monthly data of GPCC data base in the spatial resolution of 0.5°×0.5° during 40 years period(1974- 2013) have been used. In order to analyze the spatial character of precipitation, the mean of annual, seasonal and monthly amounts of precipitation were prepared and then by applying IDW method...

2017
Zhenxing Jia Hongfei Zang Xiuqing Zheng Yongxin Xu Marco Franchini

Due to climate change and human activities over the last fifty years, the spring flow volume of karst groundwater has sharply diminished in China. Climate change is one of the critical factors that initiates a series of karst hydrogeologic and water ecological environmental problems, because the precipitation shows a decreasing trend while the temperature shows an increasing trend. The Jinci Sp...

Journal: :Climatic Change 2022

After an overview of the problems concerning early rain-gauges and their thresholds, a study is made to investigate impact that instrumental threshold rain-gauge has on distribution precipitation frequency amount. Tests are performed using two historical datasets, i.e., observations by Giovanni Poleni in Padua from 1725 1760, Jacopo Bartolomeo Beccari Bologna 1723 1765, modern records, taken at...

Journal: :Journal of the Japanese Society of Snow and Ice 1970

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