Similar recommendation method and system for coronal mass ejection space environment events

Abstract

The invention discloses a coronal mass ejection space environment event similar recommendation method and system. The method comprises the following steps: collecting CPA, MPA, coronal mass ejection angular width, linear velocity, initial velocity, final velocity, velocities at 20 solar radiuses, latitude and longitude coordinates of a coronal mass ejection source area, an F10.7 index of a coronal mass ejection burst day, and average solar wind velocity, temperature, proton density and dynamic pressure and a plasma beta value and magnetic field components in three directions in a set time period; performing preprocessing to obtain characteristic parameter values of 18 coronal mass ejection events; inputting a pre-established and trained CME recommendation model to obtain historical similar CME events and predicted arrival time; employing the CME recommendation model for carrying out weighting processing on the characteristic parameter values according to the weight of each characteristic parameter, then carrying out distance matching with historical events of a pre-established CME historical database, and finding the nearest historical event.

Description

technical field [0001] The invention relates to the interdisciplinary technical field of space physics and artificial intelligence, in particular to a similar recommendation method and system for coronal mass ejection space environmental events, and is applied to real business applications of space weather forecasting. Background technique [0002] The impact of solar activities on the earth is divided into three rounds of attacks according to the time span, among which coronal mass ejections (Coronal Mass Ejections, CMEs) are the main source of the third round of attacks, which are important events that occur in the solar atmosphere and affect the heliosphere. One of the eruption phenomena. The essence of coronal mass ejection is to throw a large amount of plasma carrying a magnetic field into the helioterrestrial space, and it will cause violent disturbance to the sun's corona and even more layers. When the projectile reaches the Earth, it is called an interplanetary coro...

AI Technical Summary

Problems solved by technology

At present, most models predict the arrival time of coronal mass ejection, without the recommendation function, and the error of the forecast time is large, the result is unstable, and there is a lot of chance, and there is no domestic or foreign recommendation for coronal mass ejection space environmental events model system

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