ANTICYCLONES AND
TRAVELLING
DISTURBANCE NOTES
MATRIC IEB
GEOGRAPHY
, Matric climate
Anticyclone air circulation around south Africa
Winter conditions
• Winter= cold, stable air descends
• Subsiding air from KHP heats up at DALR (1c/100m)
• Warmer than coastal air= temperature inversion
• Sinks bellow escarpment= blocks moist air from reaching/rising into
area : no rain
Rain will only occur when passing MLC causes frontal rain(warm air forced to
rise) over the southwestern cape ( Mediterranean climate)
SIHP
From KHP
Calm and clear
Moisture is prevented
from reaching interior
TRAVELLING
DISTURBANCE NOTES
MATRIC IEB
GEOGRAPHY
, Matric climate
Anticyclone air circulation around south Africa
Winter conditions
• Winter= cold, stable air descends
• Subsiding air from KHP heats up at DALR (1c/100m)
• Warmer than coastal air= temperature inversion
• Sinks bellow escarpment= blocks moist air from reaching/rising into
area : no rain
Rain will only occur when passing MLC causes frontal rain(warm air forced to
rise) over the southwestern cape ( Mediterranean climate)
SIHP
From KHP
Calm and clear
Moisture is prevented
from reaching interior