Climatic data South Africa

In order to study the influence of climate, total cationic contents (2 ) of PRISRI rivers have been split into classes based on annual runoff q in mm yr ) and S " (meqL ). A medium-sized subset has also been used (basin area from 3,200 km to 200,000 km, n = 700). The PRISRI data base covers the whole globe but has poor to very poor coverage of western Europe, Australia, South Africa, China, and India due to the lack of data for pre-impact river chemistry in these regions. PRISRI includes rivers that flow permanently ( >30mmyr ) and seasonally to occasionally (3< <30 mm yr ). Lake outlets may be included in PRISRI. 

Table 4.19 Climatic data for SADC (without South Africa)...

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