Eolian sand in peridesert northwestern Libya and implications for Late Pleistocene and Holocene Sahara expansions

The Late Pleistocene desert expansions were contemporaneous with the periods of highest sedimentation rate of non-volcanic dust in polar ice cores. The comparison between data on eolian activity in some different places outside of the present boundary of the Sahara Desert suggest that there are differences in the timing of eolian sediment mobilization and the rate of eolian sediment deposition inside and outside the Hadley cell atmospheric circulation zone. The present work confirms the influence of the size of the Hadley cells on atmosphere dust circulation patterns.