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1142results about "Weather condition prediction" patented technology

Modeling evaluation method for urban heavy rain inundation

The invention relates to the technical field of prediction of weather states, and especially relates to a modeling evaluation method for urban heavy rain inundation. The method includes the following steps: (1), establishing a to-be-evaluated area into a digital elevation model, and dividing the model into grids; (2), generating a river network, establishing a river network on the digital elevation model, and determining the current direction and speed of a basin; (3) determining inundated areas, the grids the river flows across being river grids and other grids being ground grids, determining initial river grids and inundation conditions, and successively determining, from the initial river grids, whether the ground grids adjacent the river grids meet inundation conditions, wherein the ground grids are inundated grids if the conditions are satisfied, otherwise, the ground grids are not inundated grids; (4) determining the inundation critical rainfall; (5) determining inundation calamity risks; and (6) evaluating inundation risks. Through adoption of the method, the inundation coverage, the inundation depth, the inundation risks and losses or the like can be predicated before heavy rain, early warning is carried out timely, property losses are minimized, and personal safety is guaranteed.
Owner:HANGZHOU CHENQING HEYE TECH

Monitoring and Mapping of Atmospheric Phenomena

A computerized system for mapping an atmospheric phenomenon in a geographic region. Multiple free-space electromagnetic communications links are previously distributed in the geographic region. The system includes an interface to monitoring mechanisms attached respectively to the free-space electromagnetic communications links. The monitoring mechanisms respectively monitor attenuation levels of the free-space electromagnetic communications links. A processor simultaneously processes the attenuation levels, and maps in the geographic region the atmospheric phenomenon. The simultaneous processing preferably applies a non-linear model which relates the attenuation levels the atmospheric phenomenon, and solves a tomographic problem based on the non-linear model and the attenuation levels. The tomographic problem is preferably solved by an interactive algorithm based on consecutive refinement and linear inversion at each iteration. Alternatively, an interpolation is performed based on respective inverse distance from the communications links. Preferably, the interpolation is further based on respective lengths of communications links. A data interface preferably provides to subscribers temporal information related to the atmospheric phenomenon within portions of the geographic region.
Owner:RAMOT AT TEL AVIV UNIV LTD
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