Effect of the Anomalous Electron Heating on the Ionospheric Potential in the Global MHD Model.

Physics

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

2475 Polar Cap Ionosphere, 2736 Magnetosphere/Ionosphere Interactions, 2753 Numerical Modeling, 2776 Polar Cap Phenomena

Scientific paper

Conventional approach to the modeling of the ionosphere in global MHD models is to solve a two-dimensional height-integrated electrostatic potential equation driven by the field aligned currents within the magnetosphere. The ionospheric simulation then supplies the inner boundary condition for the MHD solution in the magnetosphere. The ionospheric conductance entering the electrostatic potential equation is usually taken from empirical models including the ionization and deposition of energy due to the auroral precipitation. However, these models do not describe a direct dependence of the ionospheric conductance on the solar wind electric field. An objective of this paper is to modify the ionospheric module of the global LFM model by incorporating the anomalous electron heating which was computed based on realistic models of polar ionosphere. The anomalous electron heating due to the Farley-Buneman instability leads to an increase of plasma density through the reduction of the electron-ion recombination rate. It was shown that the enhancement of the ionospheric conductance due to the anomalous electron heating leads to the drop in the cross polar cap potential making the simulated potential close to realistic values corresponding to strong storms.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

Effect of the Anomalous Electron Heating on the Ionospheric Potential in the Global MHD Model. does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Effect of the Anomalous Electron Heating on the Ionospheric Potential in the Global MHD Model., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Effect of the Anomalous Electron Heating on the Ionospheric Potential in the Global MHD Model. will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-1469390

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.