1. Divergence of the Wind We can express the divergence equation in a simplified form, with two terms: Direction Speed The direction and speed terms, in-turn, can be expressed as directional/speed diffluence and confluence –Confluence is not equal to Convergence –Diffluence is not equal to Divergence

2. Divergence (Cont) Divergence/convergence calculations need to take into account the direction and speed terms. –This is done through objective analysis Streamline analysis is a subjective technique, and it only shows directional diffluence and confluence. –It does not show convergence/divergence

3. Example Directional Diffluence/Confluence Directional ConfluenceDirectional Diffluence

4. Speed Diffluence/Confluence Speed Diffluence Speed Confluence A B

5. Convergent or Divergent? A Directional Confluence Speed Diffluence

6. Convergent or Divergent?

7. A Directional Diffluence Speed Confluence

8. Convergent or Divergent?