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62 results about "Weather map" patented technology

A weather map displays various meteorological features across a particular area at a particular point in time and has various symbols which all have specific meanings. Such maps have been in use since the mid-19th century and are used for research and weather forecasting purposes. Maps using isotherms show temperature gradients, which can help locate weather fronts. Isotach maps, analyzing lines of equal wind speed, on a constant pressure surface of 300 or 250 hPa show where the jet stream is located. Use of constant pressure charts at the 700 and 500 hPa level can indicate tropical cyclone motion. Two-dimensional streamlines based on wind speeds at various levels show areas of convergence and divergence in the wind field, which are helpful in determining the location of features within the wind pattern. A popular type of surface weather map is the surface weather analysis, which plots isobars to depict areas of high pressure and low pressure. Cloud codes are translated into symbols and plotted on these maps along with other meteorological data that are included in synoptic reports sent by professionally trained observers.

Transient disturbance weather map and low-frequency disturbance weather map manufacturing method and application of method in weather report

The invention discloses a transient disturbance weather map and low-frequency disturbance weather map manufacturing method based on atmospheric variable physical decomposition and application of the method in weather forecast. The method includes that formerly observed, recently observed and medium-term numerical weather predication modes are used for output atmospheric space three-dimensional multi-variable and time continuous grid point data, climate components and synoptic scale disturbance components of daily cycle and annual cycle are obtained through physical decomposition, and the synoptic scale disturbance components are used for manufacturing a transient disturbance weather map and a low-frequency disturbance weather map. According to the method, after climate seasonal variation field and day-by-day synoptic scale transient disturbance field physical decomposition is performed on meteorological data of the Northern Hemisphere in the past 30 years, synoptic scale transient disturbance components predicated through the recently observed and medium-term numerical weather predication modes are used for drawing a transient disturbance weather map and a low-frequency disturbance weather map. The transient disturbance weather map is suitable for manufacturing 1 to 3 days short-term weather forecast and 4 to 9 days medium-term weather forecast, the low-frequency disturbance weather map is suitable for manufacturing medium-term and 10 to 30 days elongating stage weather process forecast. A novel tool for weather forecast is provided, and accuracy of the weather forecast can be improved.
Owner:钱维宏

Trough line automatic drawing method based on geopotential height data in computer weather software

The invention discloses a trough line automatic drawing method based on geopotential height data in computer weather software. The method can realize automatic extraction and drawing of weather trough lines in a weather map, and comprises the following steps: calculation of a curvature value: calculating geostrophic velocities of each grid point in the latitude and longitude directions, obtaining a wind angle of geostrophic wind at the grid point based on the calculation, and deriving the wind angle of the geostrophic wind in the wind velocity direction, thus obtaining the curvature value; tracking of trough points: extracting a local curvature minimum value which is used as a trough line tracking start point, and tracking and connecting the trough points from the trough line tracking start point according to constraint conditions such as the quantity of adjacent points with relatively small curvature values of all the grid points, thus obtaining an original trough line; processing of the original trough line: eliminating noise from the extracted original trough line, and performing smoothing processing, thus generating a trough line meeting a meteorological service demand.
Owner:PLA UNIV OF SCI & TECH

Power network geographic information system (GIS) based mobile terminal collaborative plotting method

The present invention discloses a power network geographic information system (GIS) based mobile terminal collaborative plotting method comprising the following steps: acquiring emergency information, and determining the location of an emergency on a power network GIS map; classifying according to needs, determining event types and ranks, and performing analysis, research and determination on influence scope of the emergency and power network equipment and facilities to select an optimal path; establishing an equipment map layer and a weather map layer respectively in the power network GIS map according to positioning information of electrical equipment and a weather monitoring station, superimposing the weather map layer and the equipment map layer, intuitively drawing a situation map on the GIS map, and synchronizing plotting information to a center data terminal; gathering and summarizing the plotting information by the center data terminal and then synchronously issuing the information to a collaborative plotting mobile terminal; and setting a playing time scale, playing a prearranged plan data and checking the situation at any time to perform dynamic map deduction. By adopting the power network GIS based mobile terminal collaborative plotting method, rich plotting languages including graphical plotting languages, symbolic plotting languages and the like are used for completely, comprehensively, accurately and timely showing emergency resource situations.
Owner:山东弘石互联网科技有限公司

Method of extracting trough ridge feature points and trough ridge feature lines from contour data and synoptic chart analysis method

The invention discloses a method for extracting characteristic points and characteristic lines of a trough ridge by using contour data, and a weather chart analysis method. The present invention provides a method for extracting groove ridge feature points from contour field data. For the non-closed contour, three points are chosen according to the included angles of every three points on the contour, and the selected points are formed into a sequence S, and the characteristic points of the groove ridge are determined according to the arc characteristics of S. The invention provides a method for extracting groove ridge characteristic lines by using contour line data. On the basis of extracting groove ridge characteristic points, the groove/ridge point properties are identified in three schemes, the groove/ridge points are clustered according to distance conditions, and finally, all groove/ridge points of a congruence cluster are simulated by using a Bessel curve to obtain groove/ridge lines. The invention provides an application of two methods in the analysis of weather maps and topographic maps, and a weather map analysis method. The method of the invention can simultaneously identify the groove point and the ridge point, generate the groove line and the ridge line, has high algorithm efficiency and accurate result, and the obtained groove ridge line has no crossing and beautiful appearance.
Owner:CHENGDU UNIV OF INFORMATION TECH

Southwest region precipitation extension period comprehensive forecast information processing method and processing system

ActiveCN112698428AImprove accuracyExhibit low frequency weather patternsWeather condition predictionInformation processingNerve network
The invention belongs to the technical field of weather information processing, and discloses a southwest region precipitation extension period comprehensive forecast information processing method and processing system, and the system is mainly composed of a data processing and forecast server and an intelligent application terminal. The data processing and forecast server mainly comprises a data receiving module, a data low-frequency processing module, a low-frequency weather flow pattern determining module and the like. The intelligent application terminal comprises a data access module and other modules. The system quantitatively describes the low-frequency weather through multiple regression and a neural network algorithm, and comprehensively forecasts the precipitation in the southwest region in combination with a low-frequency weather map, a low-frequency disturbance energy map and the like. According to the invention, the forecasting result is more intuitive, dependence on artificial experience forecasting is reduced to a certain extent, and the influence of subjective factors is less. The system can play a supplementary role in forecasting of forecasting workers, and qualitative forecasting and quantitative forecasting are correctly combined for use, so that the forecasting efficiency and accuracy can be effectively improved.
Owner:CHENGDU UNIV OF INFORMATION TECH +2

General aviation weather information processing system

The invention discloses a general aviation weather information processing system. The general aviation weather information processing system comprises a weather information comprehensive processing subsystem, a weather information interaction subsystem, a weather data preprocessing subsystem and a geostationary satellite; the weather information comprehensive processing subsystem and the weather information interaction subsystem are in bidirectional electrical connection; the weather information comprehensive processing subsystem and the weather data preprocessing subsystem are in bidirectional electrical connection; the weather information comprehensive processing subsystem includes a digital satellite cloud image processing module, a flight position weather information generating module,an aviation weather data processing module, and a low altitude weather map generation module. The weather information is comprehensively processed, and the processed weather data is provided for general aviation users in real time; the general aviation weather information processing system can meet the requirements of low-altitude flight and random route during general aviation flight, and solvesthe problem that the existing general aviation weather information processing system cannot acquire marine meteorology and desert meteorology, and there are certain limitations in the weather information obtained by general aviation.
Owner:叶玉妹
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