نتایج جستجو برای: standardized evapotransprecipitation index sepi
تعداد نتایج: 461681 فیلتر نتایج به سال:
The primary objective of the present study is the investigation of the various properties of Iran’s local and regional droughts based on the theory of runs and standardized precipitation index (SPI). Thus, in order to accomplish this goal, the annual precipitation data of 63 synoptic stations were procured from Iran’s meteorological organization for a 30-year period (1986-2015).. First, based o...
The authors propose a new climatic drought index: the standardized precipitation evapotranspiration index (SPEI). The SPEI is based on precipitation and temperature data, and it has the advantage of combining multiscalar character with the capacity to include the effects of temperature variability on drought assessment. The procedure to calculate the index is detailed and involves a climatic wa...
بررسی و مقایسه دوره های خشکسالی با استفاده از نمایه های مبتنی بر بارش در برخی مناطق مرکزی و غرب کشور
In this study, to evaluate and comparing of drought and wet occurrences, Annual rainfall data related to a 60-year period were used for Kermanshah, Kordestan, Kerman and Yazd provinces. Among the different drought indices, the precipitation-based indices such as, Standardized Precipitation Index (SPI), Percent of Normal Precipitation Index (PNPI), Z-Score Index (ZSI) and Nitzche model were used...
Background 13 000 cases of skin cancer are diagnosed annually in Ireland, with ultraviolet (UV) radiation exposure the strongest risk factor. Public health primary prevention campaigns focus on encouraging safe sun protective measures and awareness. We designed a novel, digitally-animated hospital-based campaign targeting all aspects sun-protective behaviour. Objectives To explore attitudes beh...
To observe and analyze the effects of continuous positive airway pressure (CPAP) ventilation on advanced glycation end products (AGEs) and oxidized low density lipoprotein (ox-LDL) levels in patients with obstructive sleep apnea hypopnea syndrome (OSAHS), 60 patients with OSAHS were selected as the case group, and 30 patients with simple snoring were selected as the control group. The patients ...
the objective of this study is to develop a novel methodology integrating remote sensing, geographic information system technology and local spatial autocorrelation geo-computation for quick drought assessment. one group of drought indices, based on the condition of the vegetation, includes the normalized difference vegetation index (ndvi), anomaly of normalized difference vegetation index (ndv...
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