Like desert climates (4)
I believe the answer is:
arid
'like desert climates' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for arid that I've seen before include "Without much rainfall" , "Tedious; short of rain" , "Dry and infertile" , "Parched with heat" , "Wadi may be this" .)