Surface and upper level convergence and divergence

Here are some additional examples to analyze. You'll find answers to the questions at the bottom of the page.

At upper levels 50 mb worth of air is flowing into the column, 100 mb worth of air is flowing out. Is there net Convergence or Divergence occurring at upper levels? At the surface 3 arrows each with 20 mb worth of air is converging in toward the surface center of low pressure. What will happen to the LOW, will the pressure get lower or will the pressure increase?

This is a surface HIGH. The surface winds are blowing clockwise and diverging. There are 45 mb worth of divergence occurring at the ground (3 arrows each with 15 mb worth of air). What is going on at upper levels, is there net Convergence or Divergence? What will happen to the surface HIGH? Will the surface pressure increase or decrease?

What will happen to the surface HIGH in this case?

Answers

Example #1
At upper levels there is more air leaving the column than going in. That is net Divergence. There are 50 mb worth of net divergence at upper levels. At the ground there were 60 mb worth of convergence.

The surface convergence is greater than the upper level divergence. The surface low pressure will get higher.

Example #2
There are 30 mb of net Convergence at upper levels.

The surface divergence (45 mb worth of air) is greater than the upper level convergence (30 mb worth of air). The surface high pressure will get lower.

Examples #3
There are 75 mb worth of upper level convergence and 45 mb worth of surface divergence.

Upper level convergence is greater than the surface divergence and the surface high pressure will get higher.