Question ATPL - Airline Transport Pilot license - Meteorology

ATPL - Considering the route from Lisbon to Freetown, the Harmattan is a

SW monsoonal wind causing extensive areas of advection fog along the West African coast south of 15°N.

NE wind affecting north-west Africa during November to April reducing visibility in rising dust.

Localised depression giving squally winds.

Warm southerly dust-bearing wind affecting the coast of North Africa.