What does HPC stand for?

This upper-air high pressure cell is coupled with a low pressure core close to Antarctica around which the regular vortex sequence flowed, yet the core persists.

This would push all the low pressure systems (unsettled weather) on a path towards Iceland and allow the normally reliable Azores high pressure cells (settled weather) to reach the UK.

The secondary influence comes from the Azores high pressure cell in summer and from the African low pressure cell in winter.

The succeeding anticyclone establishes itself east of the continent; it feeds a deep, and moist, airflow into the subcontinent but the next Atlantic high pressure cell prevents this system from settling over Namibia, pushing it instead within a matter of a day or two, over Botswana and South Africa's Northern Cape province.

As the season progresses, this high pressure cell extends its influence over the sub-continents, offsetting the dominant winter flow from the South Atlantic high.

This dynamic reciprocity is driven by high pressure cells rotating in the upper levels.

Further south, the high pressure cells remains somewhat displaced at the 40[degrees]S latitude.

Further south, the high pressure cells remains somewhat displaced at the 40oS latitude.