Why do you think africa has high albedo levels ?

the intensity of albedo temperature effects depends on the amount of albedo and the level of local insolation (solar irradiance); high albedo areas in the arctic and antarctic regions are cold due to low insolation, whereas areas such as the sahara desert, which also have a relatively high albedo, will be hotter

explanation:

sodium i think the chemical element of atomic number 11, a soft silver-white reactive metal of the alkali metal group.