 Finally, looking at a cross section (y-z) through the confluent flow, using Q-vectors (Q pointing toward upward motion), on the warm side (bottom of confluent schematic), there is upward motion and on the other hand, the cold side (top of confluent schematic), there is downward motion.The cross-section points out convergence (arrows pointing towards each other) associated with tightening of horizontal temperature gradient.Conversely, divergence is noticed (arrows point away from each other), associated with stretching horizontal temperature gradient.