[Understanding Weather & Climate, Books a la Carte Edition (6th Edition) #ISBN-13: 978-0321773227 #ISBN-10: 0321773225 CH 6 Cloud Development and Forms]

Convergence

Mass of the atmosphere is not uniformly distributed across Earth’s surface, large areas of pressure differences cause the air in motion – wind

Convergence – near the surface of a low-pressure cell, horizontal movement of wind toward the center while air rises near the center

p.S- Convergence (lifting mechanisms) is one among four mechanisms lift air so that condensation and cloud formation can occur.