Systematic evaluation of ground and geostationary magnetic field predictions generated by global magnetohydrodynamic models

A. Pulkkinen; L. Rastatter; M. KuznetsovaM. HesseA. RidleyJ. RaederH. J. SingerA. Chulaki

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Systematic evaluation of ground and geostationary magnetic field predictions generated by global magnetohydrodynamic models

机译：地面和同步的系统评价磁场产生的预测全球磁流体动力模型

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In this work a systematic evaluation of ground and geostationary magnetic fieldpredictions generated by a set of global magnetohydrodynamic (MHD) models is carriedout. The evaluation uses four geospace storm events and ground magnetometer station andgeostationary GOES data for comparisons between model output and observations. It isshown that metrics analysis of two different geospace parameters, i.e., geostationaryand ground magnetic field, show surprising similarities, although the parameters reflectrather different properties of geospace. More specifically, increasing the spatial resolutionand inclusion of more realistic inner magnetospheric physics successfully made themodel predictions by the BATS-R-US model more accurate. Furthermore, while theOpenGGCM model had a tendency to have larger differences to observations thanBATS-R-US in terms of the prediction efficiency, the model provided more accuraterepresentation of the observed spectral characteristics of the ground and geostationarymagnetic field fluctuations.

机译：在这个系统的地面和评估工作同步磁fieldpredictions生成由一组全球磁流体动力(磁流体动力)模型是carriedout。地球空间风暴事件和地面磁力仪站andgeostationary数据对比模型和输出观察。两个不同的地球空间参数,即geostationaryand地面磁场,表演惊人的相似之处,尽管参数reflectrather地球空间的不同属性。更具体地说,增加了空间resolutionand包含更多的真实的内心成功磁性层的物理模型BATS-R-US模型预测更加准确。此外,虽然theOpenGGCM模型有一个倾向于有较大的差异观察thanBATS-R-US而言的预测效率,提供了更多的模型accuraterepresentation观察到的光谱地上的特征geostationarymagnetic场波动。

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来源
《Journal of Geophysical Research, A. Space Physics: JGR》 |2010年第3期|A03206:1-A03206:12|共12页
作者
A. Pulkkinen; L. Rastatter; M. KuznetsovaM. HesseA. RidleyJ. RaederH. J. SingerA. Chulaki;
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作者单位

Department of Atmospheric, Oceanic, and Space Sciences, Universityof Michigan, Ann Arbor, Michigan, USA;

Space Weather Prediction Center, NOAA, Boulder, Colorado, USA;

Space Science Center and Physics Department, University of NewHampshire, Durham, New Hampshire, USAGoddard Earth Sciences and Technology Center, University ofMaryland, Baltimore, Maryland, USANASA Goddard Space Flight Center, Greenbelt, Maryland, USA;

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正文语种英语
中图分类空间物理;
关键词
ground; ground magnetometer; Analogymagnetic fieldsystem evaluation;

机译：地面;地面磁力计;类比磁场系统评估;

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Systematic evaluation of ground and geostationary magnetic field predictions generated by global magnetohydrodynamic models

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