Bibliography
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O/N 2 changes during 1--4 October 2002 storms: IMAGE SI-13 and TIMED/GUVI observations
Author | Zhang, Y.; Paxton, L.; Morrison, D.; Wolven, B.; Kil, H.; Meng, C.-I.; Mende, S.; Immel, T.; |
Keywords | Magnetic storm; thermospheric composition change |
Abstract | Thermospheric O/N2 column density ratios referenced at a N2 column density of 1017 cm-2 are obtained using the IMAGE SI-13 and TIMED/GUVI far-ultraviolet (FUV) dayglow data, AURIC simulation results, and MSIS86 model. Each of the magnetic storms occurring during a 4-day period (1\textendash4 October 2002) caused significant O/N2 depletion that was detected by both of the IMAGE SI-13 and GUVI instruments. The depletion extended down to latitudes of 10\textdegree and -5\textdegree in the Northern and Southern Hemispheres, respectively. Simultaneous measurements show an excellent agreement between the SI-13 and GUVI O/N2 on both global and local scales. The IMAGE SI-13 O/N2 data provide direct optical evidence that the O/N2 depletion corotates with the Earth. The GUVI O/N2 indicate the depletion in both of the hemispheres is not symmetric owing to the seasonal effect and differences in heating and convection induced winds. Both the IMAGE SI-13 and GUVI O/N2 maps also provide a good opportunity for future modeling efforts. |
Year of Publication | 2004 |
Journal | Journal of Geophysical Research |
Volume | 109 |
Number of Pages | |
Section | |
Date Published | 10/2004 |
ISBN | |
URL | http://doi.wiley.com/10.1029/2004JA010441 |
DOI | 10.1029/2004JA010441 |