2021年11月4日地磁暴事件的热层风观测与模拟

IF 0.6 Q4 ASTRONOMY & ASTROPHYSICS

Journal of Astronomy and Space Sciences Pub Date : 2022-09-01 DOI:10.5140/jass.2022.39.3.79

Qian Wu, D. Lin, Wenbin Wang, W. Ward

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引用次数: 1

摘要

将高纬度到中纬度的热层风观测与新建立的多尺度大气地球空间环境(MAGE)模式进行了比较。观测结果与模拟结果的比较表明，两者的一致性非常好，一般在高纬度地区效果更好。我们能够确定热层极风减少可能与11月3日~22 UT的行星际磁场(IMF)向北转向有关，并且在11月4日10 UT附近高纬度地区的极风增强到向南转向。午夜时分，国际货币基金组织的南向转向可能导致科罗拉多州博尔德的赤道风增强。同时发生的极光可能与国际货币基金组织有关，变为负值。在这些情况下，MAGE模式的风模拟与观测结果一致。结果表明，该模型可以为进一步研究磁层和电离层在短时间尺度上的耦合提供一个非常有用的工具。

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Thermospheric Wind Observation and Simulation during the Nov 4, 2021 Geomagnetic Storm Event

Thermospheric wind observations from high to mid latitudes are compared with the newly developed Multiscale Atmosphere Geospace Environment (MAGE) model for the Nov 3–4 geomagnetic storm. The observation and simulation comparison shows a very good agreement and is better at high latitudes in general. We were able to identify a thermospheric poleward wind reduction possibly linked to a northward turning of the Interplanetary Magnetic Field (IMF) at ~22 UT on Nov 3 and an enhancement of the poleward wind to a southward turning near 10 UT on Nov 4 at high latitudes. An IMF southward turning may have led to an enhancement of equatorward winds at Boulder, Colorado near midnight. Simultaneous occurrence of aurora may be associated with an IMF By turning negative. The MAGE model wind simulations are consistent with observations in these cases. The results show the model can be a very useful tool to further study the magnetosphere and ionosphere coupling on short time scales.

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来源期刊

Journal of Astronomy and Space Sciences ASTRONOMY & ASTROPHYSICS-

CiteScore

1.30

自引率

20.00%

发文量

审稿时长

12 weeks

期刊介绍： JASS aims for the promotion of global awareness and understanding of space science and related applications. Unlike other journals that focus either on space science or on space technologies, it intends to bridge the two communities of space science and technologies, by providing opportunities to exchange ideas and viewpoints in a single journal. Topics suitable for publication in JASS include researches in the following fields: space astronomy, solar physics, magnetospheric and ionospheric physics, cosmic ray, space weather, and planetary sciences; space instrumentation, satellite dynamics, geodesy, spacecraft control, and spacecraft navigation. However, the topics covered by JASS are not restricted to those mentioned above as the journal also encourages submission of research results in all other branches related to space science and technologies. Even though JASS was established on the heritage and achievements of the Korean space science community, it is now open to the worldwide community, while maintaining a high standard as a leading international journal. Hence, it solicits papers from the international community with a vision of global collaboration in the fields of space science and technologies.