The Negev (near Mitzpe Ramon), Israel

Because of the specific heat of the sand (or other desert soils) there are significant temprature differences between day and night. 

Within short time, the soil could warm up (during the day) or cool down (during the night).

Thus, the danger of the desertification is severe. The desertification phenomena is not only damaging the soil fertility, but also can change the climate in the hole region

When we go to travel In the desert in Israel (Negev, Judea desert), we can feel those temperature differences.  

Picture: Me (Matan) at the Negev