(a) Draw an outline map of Nigeria. On the map. show and name: (i) the position of Tropical Maritime air mass (S.W. Winds) in July: (ii) the position of Int...
Question 1 Report
(a) Draw an outline map of Nigeria. On the map. show and name:
(i) the position of Tropical Maritime air mass (S.W. Winds) in July:
(ii) the position of Inter Tropical Convergence Zone (I. T. C. Z) in July;
(iii) the relative position of Tropical Continental air mass (N. F. Winds) in July:
(iv) three towns located in (a.)(i) above.
(b) State four characteristics of the wet season in Nigeria.
(c) List two cash crops grown during the wet season in Nigeria.
Answer Details
(a) Outline map of Nigeria showing the air masses and the ITCZ in July
In July, moist Tropical Maritime (T.M.) south-westerly winds cover virtually the whole of Nigeria. The ITCZ lies north of Nigeria, approximately along latitude 20°N, and the dry Tropical Continental (T.C.) north-easterly winds are restricted to the area north of the ITCZ. Lagos, Ibadan and Enugu are shown within the area occupied by the T.M. air mass.
(b) Characteristics of the wet season in Nigeria
- The prevailing air mass is the moist Tropical Maritime air mass, which blows as south-westerly winds from the Atlantic Ocean.
- Rainfall is heavy and frequent, often accompanied by thunderstorms and squall lines.
- Relative humidity is high, generally about 80% to 100%, and cloud cover is extensive.
- Rainfall is greatest and lasts longest in the south, decreasing northwards. The south has a double rainfall maximum, with an August break, while the north has a single maximum.
(c) Two cash crops grown during the wet season in Nigeria
- Cocoa
- Oil palm
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