METHOD OF DETERMINING ATMOSPHERIC CYCLONES PARAMETERS Russian patent published in 2020 - IPC G01W1/00 G06F17/16 G06F30/3308 G06F113/08 

FIELD: measurement.

SUBSTANCE: method involves periodic measurement with time step Δt≤6 hours of surface atmospheric pressure p(ϕi, λi, t), i∈(1, I), where: I is total number of measurement points in weather observation territory, ϕi is geographical latitude and λi is longitude of the i-th local pressure measurement point, t is measurement moment, further combination of measured local data into single field of near-surface atmospheric pressures D_r(N, M, t)={p(N, M, t)}, where: N is the distance between the surface atmospheric pressure data in degrees of latitude, M is the distance between the surface atmospheric pressure data in degrees of longitude. Further representation of the field D_r(N, M, t) in form of a three-dimensional matrix N×M×t and search for cyclones thereon by consecutive viewing of pressures in cells of a matrix with a field of vision, having a central window and at least eight peripheral windows shifted along axes N and M relative to the central opening by the current distance Δ=1–10 of dimensions of discretes of the three-dimensional matrix N×M×t. Identification of found cyclones and spatial arrangement of their axes of rotation on the field of meteorological data at each step of survey is determined by the presence of minimum pressure in the central window relative to the peripheral windows. Area sizes of the found cyclones are determined from the size of the field of view at equal pressure in its peripheral openings. After all cyclones are found on the meteorological data field, their intensity δp is measured from the condition δp=Plast-Pc, where: Pc, Plast – pressure in the center and at periphery of cyclone, hPa. Further, cyclones are filtered to exceed their threshold value δp of δp≥20 hPa. After filtration of intense cyclones their kinetic energy Ek and their threshold treatment are evaluated from the expression Ek≥Epor, where: Epe – threshold value of kinetic energy of cyclone, leading to physical damages of buildings and structures on their way of movement. Then at successive instants of time t_i with time interval Δt=t_i-t_i-1 of updating, Δt≤6 hours, of meteorological data, by found position of geographical coordinates, latitude ϕ and longitude λ cyclonic centers at each moment t_i of their observations on the sphere of the Earth and a known value of temporal discreteness Δt of observations calculating a speed, trajectory of destructive cyclones, remaining time before arrival of cyclones in populated areas located on path of cyclones, measured values of cyclone parameters, as well as their degree of hazard for objects located on the cyclones movement way.

EFFECT: higher rate of detection and measurement of atmospheric cyclone parameters and, as a result, higher efficiency of warning the population and duty facilities of the Ministry of Emergency Situations (MoES) on impending climatic threats.

1 cl, 11 dwg