global climate 
ENSO influences both rainfall and temperature patterns worldwide. The following figures show the changes in climate and weather patterns due to El Nio and La Nia. Please note that these figures are only applicable for December to February (summer in the southern hemisphere) when ENSO's impact on southern Africa is most profound. There is very little evidence that El Nio or La Nia effect winter rainfall over our region.
 The following figures show the changes in climate and weather patterns due to El Nio and La Nia. Please note that these figures are only applicable for December to February (summer in the southern hemisphere) when ENSO's impact on southern Africa is most profound. There is very little evidence that El Nio or La Nia effect winter rainfall over our region. 
A scientific definition was recently developed to help scientists to identify ENSO events. When the three-month running mean of the SST anomalies in the Nino 3.4 region (see map of Nino regions ) are greater than or equal to 0.5C, there is a good chance of an El Nio event taking place. When the anomalies are smaller than or equal to -0.5C, there is a good chance of a La Nia event taking place. Take note, however, that strong ENSO events (which are more likely to affect our seasonal climate) have a larger SST anomaly and normally last for a period much longer than three months. 

October 2001 Households:  The number of households according to STATS SA as at October 2001.

April 2009 Households:  An estimated current number of households based on Census 2001 households and grown annually with STATS SA households growth formula.

Current Estimated Households Growth %:  Current estimated household growth based on STATS SA household estimates between 2004 and 2005.

Household Density:  The average estimated number of people per household based on STATS SA and Census 2001 results.

Please Note:  The Census 2001 households as published describe households in housing units only.  These tables represent 43,369,667 people, out of the total population of 44,819,778.  Just under 1,5 million people lived in collective living quarters and are not included in these tables.  Collective living includes hostels, hotels and institutions (see Census in Brief document publised by StatsSA in 2003 p vi and vii).

The Oct 2001 Households reflected in the WSNIS is a calculated household figure including the entire South African population.  

Official StatsSA Oct 2001 and WSNIS 2001 Household figures should therefore differ, especially in areas where collective living areas are abundant.

October 2001 Households:  The number of households according to STATS SA as at October 2001.

April 2009 Households:  An estimated current number of households based on Census 2001 households and grown annually with STATS SA households growth formula.

Current Estimated Households Growth %:  Current estimated household growth based on STATS SA household estimates between 2004 and 2005.

Household Density:  The average estimated number of people per household based on STATS SA and Census 2001 results.

Please Note:  The Census 2001 households as published describe households in housing units only.  These tables represent 43,369,667 people, out of the total population of 44,819,778.  Just under 1,5 million people lived in collective living quarters and are not included in these tables.  Collective living includes hostels, hotels and institutions (see Census in Brief document publised by StatsSA in 2003 p vi and vii).

The Oct 2001 Households reflected in the WSNIS is a calculated household figure including the entire South African population.  

Official StatsSA Oct 2001 and WSNIS 2001 Household figures should therefore differ, especially in areas where collective living areas are abundant.
