The harmattan wind in Nigeria is associated with

The harmattan wind in Nigeria is associated with the Tropical Continental Airmass. This is a dry and dusty air mass that originates from the Sahara desert in North Africa and moves southwards towards Nigeria during the months of November to February. The harmattan wind is characterized by its dryness, hotness, and dustiness. It causes a drop in humidity and a rise in temperature, which can lead to dry skin, cracked lips, and other health problems. The dust carried by the harmattan wind reduces visibility and can cause respiratory problems for people with asthma and other respiratory illnesses. It also affects agriculture, as the dry conditions can lead to crop failures and livestock deaths.