A recommended method and system for the similarity of coronal mass ejection space environmental events

A space environment and recommendation method technology, applied in the interdisciplinary fields of space physics and artificial intelligence, can solve the problems of no recommended model system for coronal mass ejection space environment events, no recommendation function, large forecast time error, etc.

Active Publication Date: 2022-03-08
NAT SPACE SCI CENT CAS
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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

Method used

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  • A recommended method and system for the similarity of coronal mass ejection space environmental events
  • A recommended method and system for the similarity of coronal mass ejection space environmental events
  • A recommended method and system for the similarity of coronal mass ejection space environmental events

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Embodiment 1

[0055] Embodiment 1 of the present invention proposes a method for similarly recommending a coronal mass ejection space environment event, the method comprising:

[0056] Collect CPA, MPA, CME angular width, linear velocity, initial velocity, final velocity, velocity at 20 solar radii, longitude and latitude coordinates of CME source area, F10 on the day when CME erupts within a set time period .7 index and solar wind average velocity, temperature, proton density, dynamic pressure, plasma β value and magnetic field components in three directions, after preprocessing, get the characteristic parameter values ​​of 18 kinds of coronal mass ejection events;

[0057] Input the characteristic parameter values ​​of 18 coronal mass ejection events into the pre-established and trained CME recommendation model to obtain similar historical CME events and predicted arrival times;

[0058] The CME recommendation model is used to weight the characteristic parameter value according to the wei...

Embodiment 2

[0088] Embodiment 2 of the present invention proposes a similar recommendation system for coronal mass ejection space environmental events. The system includes: a CME recommendation model, a feature parameter acquisition and processing module, and a recommendation output module; the specific processing process is the same as that of Embodiment 1, wherein,

[0089] Feature parameter collection and processing module, used to collect CPA, MPA, CME angular width, linear velocity, initial velocity, final velocity, velocity at 20 solar radii, longitude and latitude coordinates of CME source area within a set time period , the F10.7 index on the day when the CME erupted, and the average velocity, temperature, proton density, dynamic pressure, plasma β value, and magnetic field components in three directions of the solar wind, after preprocessing, the characteristic parameters of 18 CME events were obtained value; preprocessing includes calculating the corresponding daily average value...

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Abstract

The invention discloses a method and system for similarity recommendation of coronal mass ejection space environmental events. The velocity at the solar radius, the longitude and latitude coordinates of the source area of ​​the CME, the F10.7 index on the day when the CME erupted, and the average velocity, temperature, proton density, dynamic pressure, plasma β value and magnetic field components in three directions of the solar wind, After preprocessing, the characteristic parameter values ​​of 18 kinds of coronal mass ejection events are obtained; then input the pre-established and trained CME recommendation model to obtain historical similar CME events and predicted arrival times; the CME recommendation model is used to The weighting process weights the characteristic parameter values, and then performs distance matching with the historical events of the pre-established CME historical database to find the closest 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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/27G06Q10/04G06Q50/26G06K9/62G01W1/10G06F119/12
CPCG06F30/27G06Q10/04G06Q50/26G01W1/10G06F2119/12G06F18/214
Inventor 石育榕陈艳红刘四清师立勤王晶晶崔延美罗冰显袁天娇
Owner NAT SPACE SCI CENT CAS
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