Figure 4

Neutral atmosphere model. Shown are calculated gas temperatures and velocities at 190 km for equinox solar cycle minimum conditions. (1) Minimum temperatures are in blue and correspond to 115–130K (nightside); (2) Moderate temperatures in green correspond to 170–180K (mostly dayside, low SZA); (3) Maximum temperatures in red correspond to 250–290K (high latitude and evening terminator). Temperature increments are 10K throughout. Maximum area for horizontal wind is ~350 m/s [15].