Longitudinal Dependance Of Solsticial Hadley Cell Detected At The Edge   Of The Massive Martian Erg
  Using public HIRISE images of MARS, I derive the wind directions at high Northern lattitudes, where many interesting eolian features are observed. BArchan dunes show prominent wind direction from the North indicating that they formed during the southern summer. But a few record consistent SE winds near the UTOPIA PLANITIA basin. The wind reversal is consistent with a local perturbation of the solsticial Hadley cell caused by geological depression. 
M. Kuassivi
physics.gen-ph