in different regions, precipitation takes place with different persistencies and every persistency supplies a share of rainfall days and precipitation. therefore, the importance of rainfall persistence could be evaluated in all places. iran is located in mid-latitude of an arid region, in which the mean rainfall is 250 mm and it has dramatic tempo-spatial changes. rainfalls with short persisten...

Due to randomness in the occurrence of hydrological phenomena, estimation probable rain precipitation a given region is important assisting decision-making. This work aimed adjust probabilistic model Gamma distribution monthly and annual rainfall totals recorded city Cruzeiro do Sul, Acre, for period between 1970 2019, addition estimating expected values at different probability levels. Using m...

do.usbr. Summary We investigate the applicability of the Two-dimensional, Runoff, Erosion and Export (TREX) model to simulate extreme floods on large watersheds in semi-arid regions in the western United States. Spatially-distributed extreme storm and channel components are implemented so that the TREX model can be applied to this problem. TREX is demonstrated via calibration, validation and si...

Parameters such as future precipitation, temperature, snowfall, and runoff were modeled using PRECIS regionalclimate modeling system in Iran with the horizontal resolutions of 0.44×0.44°C in latitude and longitude under SRESA2 and B2 scenarios. The dataset was based on HadAM3p during the periods of 1961-1990 and 2071-2100. Theoverall precipitation error of the model in the period of 1961-1990 w...

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...

Storm surge simulation models require certain parameters for evaluating the worst possible event that could occur at a site with respect to return period. The most significant probable maximum tropical cyclone are pressure deficiency centre (?P) and wind speed (Vmax) during cyclone. In this study, would yield storm along Indian coasts of Arabian Sea Bay Bengal estimated. Datasets created based ...