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Alternative TitleSignificant difference of the thermospheric density between the model and observation values of satellite during different geomagnetic storm events and different altitudes
李永平; 朱光武; 秦国泰; 唐萍; 何玉梅
Source Publication地球物理学报
Keyword地磁扰动 大气密度 大气模式 大气探测
Other AbstractAs an important parameter of space environment,thermospheric atmospheric density has been characterized by a variety of models after years of research.However,atmospheric model errors are generally large,and the deviation even excesses 100% especially during geomagnetic storm events.Comparison between the observation and model (NRLMSISE00) of global atmospheric density at different altitudes during magnetic disturbance events with various intensities is discussed in this paper.The observation data was obtained from Chinese in situ atmospheric density explorer and CHAMP satellite for nearly 10 years (20032014).Here we concentrate on the variations of atmospheric density during the four strong geomagnetic storm events(November 2003,July 2004,August 2005,and September 2005,Kpreached 9),and during two medium geomagnetic storm events (April 2006and April 2012,Kpreached 7 and 6). The observation value of Chinese satellite rose by more than 2 to 3 times,and even up to about 5. 7times on August 24,2005 when strong geomagnetic disturbance event occurred.The observation value of CHAMP satellite rose by more than 0.8 times,and even up to about 4.0 times on August 24,2005 when strong geomagnetic disturbance event occurred.But the model data show neither obvious fluctuations nor strong regional disturbances.The observation value of atmospheric density at 560 km had a significant rise in the high latitudes of the Northern and Southern hemisphere during medium-intensity geomagnetic disturbance,which was much higher than the model data.The observation data of atmospheric density at 350 km also rose significantly in the Earth's nightside,which was also greater than the mode data.It is indicated that atmospheric models cannot respond well to the global strong atmospheric density disturbances during geomagnetic storms and it should be further improved.
Indexed BySCI ; EI ; CSCD
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Cited Times:6[CSCD]   [CSCD Record]
Document Type期刊论文
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GB/T 7714
李永平,朱光武,秦国泰,等. 不同高度和不同地磁扰动期间热层大气密度模式值与探测值的显著差异[J]. 地球物理学报,2014,57(11):3703-3714.
APA 李永平,朱光武,秦国泰,唐萍,&何玉梅.(2014).不同高度和不同地磁扰动期间热层大气密度模式值与探测值的显著差异.地球物理学报,57(11),3703-3714.
MLA 李永平,et al."不同高度和不同地磁扰动期间热层大气密度模式值与探测值的显著差异".地球物理学报 57.11(2014):3703-3714.
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