ROSES ID: NNH09ZDA001N Selection Year: 2010
Program Element: Focused Science Topic
Principal Investigator: Wenbin Wang
Affiliation(s): University Corporation for Atmospheric Research
Project Member(s):
Burns, Alan G Co-I/Institutional PI aburns@ucar.edu University Corporation for Atmospheric Research 303-497-2178
Lei, Jiuhou Co-I/Institutional PI jiuhou.lei@colorado.edu University of Colorado 303-492-2393
Summary:
We propose to undertake a comprehensive study of the variations of the penetration electric fields and the mechanisms causing these variations under various geophysical conditions. Ionospheric electric fields play a crucial role in ion-neutral coupling in the thermosphere and ionosphere system. They redistribute the ionospheric plasma through transport process, affecting not only global structures of the ionosphere, but also those of the thermosphere by the nonlinear, dynamical coupling between the ions and neutrals. Our understanding of the penetration electric fields and the total ionospheric electric fields is still very limited despite the studies done over the years. Furthermore, the variations of these fields in response to changing driving conditions, and the processes that lead to these variations have not been fully characterized. Thus, we propose to carry out a comprehensive investigation of the behavior of ionospheric electric fields and their effects on thermospheric and ionospheric structures using combined model simulations and data analysis. The model we will use is a state-of-art Coupled Magnetosphere Ionosphere Thermosphere (CMIT) model. The data sets that will be used in this study include electric fields measured by the Jicamarca incoherent scattering radar and the ROCSAT-1 satellite, ionospheric total electron content (TEC) observed by GPS receivers, thermospheric mass density from the CHAMP satellite, and neutral composition obtained from the TIMED/GUVI observations. Four scientific investigations will be undertaken:Performance Year | Reference | Investigation Type | Actions |
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1 | Ma, Ruiping; Xu, Jiyao; Wang, Wenbin; Lei, Jiuhou; L... | not set |
Performance Year | Reference | Actions |
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1 | Luan, X.; Wang, W.; Dou, X.; Burns, A. G.; Yue, X.... |