3. 4 characteristic of Northan and southern savanna
Answers
Characteristics of the Tropical Savanna Climate
Temperature
Tropical savanna climates are relatively hot since they lie within the tropical latitudes. Throughout the year, mean monthly temperatures soar above 64 °F (18 °C). The dry season in savanna grasslands is cooler than the wet season by a few degrees. During the wet season, temperatures are between 78 to 86 °F (25 - 30 °C). In the dry period of the year, the temperature ranges between 68 to 78 °F (20 - 25° C). Temperatures are higher during the day as compared to nights. The highest temperatures are experienced just before the rainy season, which is October in the southern hemisphere and April in the northern hemisphere.
Precipitation
Precipitation in the tropical savanna climate is mainly in the form of rainfall. On average, this climatic zone receives between 800 and 1,600 millimeters of rain annually. As one moves away from the equator, the mean annual rainfall decreases. During the driest month, precipitation is less than 60 mm. Savanna regions have two seasons, summer and winter. Rain falls mainly in summer. The rains fall from May to September in the northern hemisphere and from October to March in the southern hemisphere.
Winds
The prevailing winds in tropical grasslands are the Trade Winds. They are easterlies, blowing from east to west. These winds have an enormous impact on the rains in this climate zone. For example, rainfall in the savanna decreases from east to west. They are also the cause of the alternating dry and wet seasons. During summer, onshore winds bring rain and in winter, offshore winds keep the savanna region dry. The Trade Winds are strongest in summer