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HIERARCHICAL APPROACH TO MODELING OF THE SOLAR WIND IN THE HELIOSPHERE AND ITS APPLICATION TO THE RISING PHASE OF SOLAR CYCLE 24тезисы доклада
- Авторы: Shugay Yu, Veselovsky I., Slemzin V.
- Сборник: 40th COSPAR Scienti c Assembly 2014
- Серия: Space Plasmas in the Solar System, including Planetary Magnetospheres (D) Space Climate (D2.2)
- Тезисы
- Год издания: 2014
- Первая страница: D22-0037-14
- Аннотация: We present the hierarchical approach to modeling the solar wind streams in the heliosphere and its application to the rising phase of the solar cycle 24 (2009-2012). This approach integrates various types of data into a single modeling system. The input data include parameters of di erent kinds of solar wind sources, such as large coronal holes, small areas of open magnetic elds near active regions and some sources associated with transient events. We use the EUV solar images from di erent spacecraft and centered at di erent wavelengths, solar magnetograms and catalogs of solar ares. On the rst hierarchical level, a few simple model estimates the solar wind speed from the input data of each type. On the second level of hierarchy, the nal forecast of the solar wind velocity was combined from the obtained estimates with the weights depending on the level of solar activity. The resulting values of the solar wind velocity for di erent periods of solar cycle 24 were compared with the measurements at the ACE and STEREO spacecrafts. Application of this method to simulation of the solar wind speed at rising solar activity allows evaluating signi cance of di erent kinds of the solar wind sources and its dependence on solar activity. This method is suitable for handling heterogeneous data, and the possibility to apply simple models allows easy interpretation of the obtained results.
- Добавил в систему: Шугай Юлия Сергеевна