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E. Cattani, A. Merino, and V. Levizzani

various satellite products in hydrometeorological applications and more generally their behavior in a region characterized by its complex terrain and by a marked seasonal and geographic variability of precipitation. In the present work, a more systematic approach is attempted by analyzing the satellite-based precipitation variability over EA for the time period 2001–09. The analysis focuses on the monthly accumulated precipitation and examines various subareas, each characterized by a different

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Ali Behrangi, Bin Guan, Paul J. Neiman, Mathias Schreier, and Bjorn Lambrigtsen

passes) is also used for analysis over land. The use of the more stringent AR landfall criteria for the land-focused analysis is to prevent the possible inclusion of partial days when the AR has not yet intersected the coast and therefore any overland impact has not yet been realized. Here, the California and the Pacific Northwest landfalls are referred to as “south” and “north” landfalls, respectively. b. Precipitation dataset 1) PRISM Reference precipitation data are obtained from the Parameter

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Yumeng Tao, Xiaogang Gao, Kuolin Hsu, Soroosh Sorooshian, and Alexander Ihler

1. Introduction Weather forecasts, climate variability, hydrology, and water resources management require sufficient information about precipitation, one of the most important variables in the natural water cycle. Precipitation observation, monitoring, and analysis tools provide fundamental information needed in order for society to cope with increasing extreme hydrometeorological events in recent decades. Satellite-based precipitation products mainly estimate precipitation indirectly based on

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