Upstream Conditions

• Solar Wind Composition: protons (and electrons) only
  
• Solar Wind Density: 3 cm^-3
  
• Solar Wind Proton Temperature: 4.3 eV
  
• Solar Wind Electron Temperature: 10 eV
  
• Solar Wind Speed: (400,0,0) km/s
  
• IMF: ( -1.634, 2.516, 0.0 ) nT in MSO
  
  

Neutral Atmosphere and Ionosphere

All information is based on results from Steve Bougher's MTGCM, run for Ls=270, F10.7 = 70 at Earth. The ASCII file below contains information organized by altitude, longitude, and latitude for the following quantities: TN, TI, TE, O, CO, N2, AR, O2, CO2, RHO, O2+, O+, NE

Do not use the ionospheric information (TI, TE, O2+, O+, NE) if your model computes ionospheric quantities directly from the neutrals

Extrapolation of these results to higher altitudes, if required by your model, is to be done on your own.


• ASCII file containing header information and caveats
  
• ASCII file containing data
  
  

Hot corona / Extended exosphere

• ASCII file containing information on a 3D oxygen exosphere computed by Aranud Valeille of the University of Michigan. Please contact him with any questions, at arnaud@umich.edu. The file contains a header, and 6-column data lines that report X (m), Y (m), Z (m), Vx (m/s), Vy (m/s), Vz (m/s), T (K), and n (m^-3).
  
  
• The hydrogen exosphere is adapted from Chaufray et al., Icarus, 2008. We will use a 2-component exosphere, with cold component having a temperature at the exobase of 200 K and density at the exobase of 1.5e5 cm^-3, and hot component having a temperature at the exobase of 500 K and density at the exobase of 1.5e4 cm^-3. The exobase altitude in this case is assumed to be 200 km. Densities at altitudes above the exobase can be computed using the Chamberlain, PSS, 1963 model for the exosphere, given by:
  N(r) = N_exobase * exp[ lambda(exobase) - lambda(r) ]
  lambda is given by GMm/kTr, with T=T_exobase everywhere, or 5.189e6 / (T r) when T and r are expressed in units of K and km.
  r is distance from the center of Mars (not altitude).
  N_exobase and T_exobase are given above.
  
  

Mars

• No crustal fields
  
• Spherical, with radius 3393.5 km