منابع مشابه
Titan’s thermospheric response to various plasma environments
[1] The Cassini‐Huygensmission has been observing Titan since October 2004, resulting in over 70 targeted flybys. Titan’s thermosphere is sampled by the Ion and Neutral Mass Spectrometer (INMS) during several of these flybys. The measured upper atmospheric density varies significantly from pass to pass. In order to quantify the processes controlling this variability, we calculate the nitrogen s...
متن کاملAtmospheric Scattering Effects on Ground-based Measurements of Thermospheric Winds
Inherent in observations of thermospheric winds from the ground with the Fabry-Perot interferometer is the assumption that the measured Doppler shift is a property ofthe source medium viewed by the instrumental line of sight. However, ground based airglow observations in regions of weak airglow emission near large intensity gradients may be contaminated by scattered light. Light from areas wher...
متن کاملA combined solar and geomagnetic index for thermospheric climate
Infrared radiation from nitric oxide (NO) at 5.3 µm is a primary mechanism by which the thermosphere cools to space. The Sounding of the Atmosphere using Broadband Emission Radiometry (SABER) instrument on the NASA Thermosphere-Ionosphere-Mesosphere Energetics and Dynamics satellite has been measuring thermospheric cooling by NO for over 13 years. In this letter we show that the SABER time seri...
متن کاملIonospheric control of the magnetospheric configuration: Thermospheric neutral winds
[1] In this study we present the first results from the University of Michigan’s coupled magnetosphere-ionosphere-thermosphere general circulation model. This code is a combination of the Michigan MHD model with the NCAR thermosphere-ionosphereelectrodynamics general circulation model (TIEGCM). The MHD code provides specification of the high-latitude ionospheric electric potential and the parti...
متن کاملProbing upper thermospheric neutral densities at Mars using electron reflectometry
[1] We present a new technique for inferring neutral densities in the Martian upper atmosphere from atmospheric absorption of magnetically reflected solar wind electrons. Using electron loss cone measurements from the Magnetometer/Electron Reflectometer (MAG/ER) experiment on board Mars Global Surveyor (MGS), we derive upper thermospheric ( 160–230 km altitude) densities in the southern hemisph...
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ژورنال
عنوان ژورنال: Eos, Transactions American Geophysical Union
سال: 2007
ISSN: 0096-3941
DOI: 10.1029/2007eo170002