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| Figure 1. Climatic diagrams for four African sites located relatively close to the equator, including Sagana, Embu, and Nairobi, Kenya, and Coquilhatville, Zaire (now renamed Mbandaka, Democratic Republic of the Congo). In each diagram, the temperature scale is on the left and the precipitation scale is on the right. Vertical bars represent average monthly precipitation and curved lines represent average monthly temperatures. The dotted horizontal line at 18°C shows the temperature boundary between A and C climates. Note the narrow annual temperature ranges of the sites in Kenya (Aw and Cw climates), and the very narrow range at Coquilhatville (Af climate). Also note the similarity between the precipitation and temperature patterns of Sagana, Embu, and Nairobi (see text for discussion). Sagana data are from December 1997 to November 1998). Data for Nairobi and Coquilhatville are from Lutgens and Tarbuck (1992), and Embu data are from the WorldClimate website at <www.worldclimate.com/cgi-bin/grid.pl?gr=N00E037>. |