Context: The primary source of rain in the Sahara is the equatorial low a continuous belt of low-pressure systems near the equator which bring the brief, short and irregular rainy season to the Sahel and the southern Sahara. The Sahara doesn't lack precipitation because of a lack of moisture, but due to the lack of a precipitation-generating mechanism. Rainfall in this giant desert has to overcome the physical and atmospheric barriers that normally prevent the production of precipitation. The harsh climate of the Sahara is characterized by extremely low, unreliable, highly erratic rainfall; extremely high sunshine duration values; high temperatures year-round; negligible rates of relative humidity, a significant diurnal temperature variation and extremely high levels of potential evaporation which are the highest recorded worldwide.

Question: What is the primary source of rain in the Sahara?
Answer: low-pressure systems

Question: What is the reason the Sahara lacks moisture?
Answer: lack of a precipitation-generating mechanism

Question: What does the desert have to overcome?
Answer: barriers that normally prevent the production of precipitation

Question: What is the temperature like year around in the desert?
Answer: high temperatures year-round

Question: Where is the low-pressure that stops rainfall in the Shara?
Answer: Unanswerable

Question: Why does the Sahara lack moisture?
Answer: Unanswerable

Question: What aids the production of percipitation in the Sahara?
Answer: Unanswerable

Question: What desert has low but regelar rainfall?
Answer: Unanswerable

Question: What does the lack of moisture in the Sahara cause?
Answer: Unanswerable

Question: What do physical and atmospheric barriers cause?
Answer: Unanswerable

Question: What has the highest recorded humidity year round?
Answer: Unanswerable

Question: When are high temperatures erratic?
Answer: Unanswerable

Question: What is furthest from the equator in the Sahara?
Answer: Unanswerable