Contrasting seasons of rain and drought characterize the savannaclimate, typically with more dry months than wet.
稀树草原气候的特征是干湿分明，干旱月份多于湿润月份。
2
Niger river in domestic long approximately 550 kilometers, it is one of the world hottest nations, North are subordinate tropics desert climate, south are subordinate savannaclimate.
尼日尔河在境内长约550公里，它是世界上最热的国家之一，北部属热带沙漠气候，南部属热带草原气候。
3
One holds that the African climate dried out and forests turned into savanna.