 Complementary research published in Geophysical Research Letters by Richard Washington from the University of Oxford and Martin Todd (University of Sussex) has shown that these strong winds are part of feature now called the Bodele Low Level Jet.In the Reanalysis data sets such as ERA-40 the wind shows up as a clear wind speed maximum at about 900 hPa (or roughly 1 km above the surface) near 18 N and 19 E. This jet maximum coincides with the exit gap of the North-easterlies between the Tibesti mountains and the Ennedi massif which lie 2600 m and 1000 m above the flat terrain in the Djourab Desert of Chad respectively.The effect of the Tibesti massif is clearly evident in creating a split in the low-level easterly flow north and south of these mountains.