PPT part 2

Question 1

A confluent trough

Answer 1

Question 2

confluent and curvature figure

Answer 2

Question 3

a confluent trough has

Answer 3

major and minor development areas

Question 4

a confluent trough figure

Answer 4

Question 5

confluent trough and ridge figure

Answer 5

Question 6

diffluent trough and ridge figure

Answer 6

Question 7

How features evolve

Answer 7

• amplification
  
  • ridges amplify
• extension
  
  • troughs extend
  • also known as sharpening
• declining
  
  • ridges decline
• relaxation
  
  • troughs relax

Question 8

diffluent trough (extends/sharpen) & (relax)

Answer 8

Question 9

diffluent ridge (amplification/sharpens) & declines

Answer 9

Question 10

diffluent ridge - confluent trough

give rapid ……………………..

Answer 10

rise of pressure

Question 11

diffluent trough - confluent ridge

gives rapid

Answer 11

fall of pressure

Question 12

Jet propagation steps

Answer 12

1. consider an air parcel entering a jet
2. the parcel accelerates into the jet as PGF increases
3. air is transported across the jet entrance
4. which leads to areas of convergence and divergence aloft
5. and the reverse happens at the jet exit
6. remember Dines’ two layer model -> vertical motion
7. Descending air warms adiabatically - ascending air cools adiabatically
8. warming decrease temperature gradient at jet enterance -> jet weakens
9. cooling increases temperature gradient at jet exit -> jet strengthens

Question 13

which leads to areas of convergence and divergence aloft

and the reverse happens at the jet exit

(figure)

Answer 13

Question 14

which leads to areas of convergence and divergence aloft

and the reverse happens at the jet exit

remember Dines’ two layer model -> vertical motion

figure

Answer 14

Question 15

Jet propagation final figure

Answer 15

Question 16

blocking patterns

Answer 16

Question 17

an omega block

figure

Answer 17

Question 18

omega blocking:

Answer 18

Question 19

a diffluent block

Answer 19

Question 20

diffluent blocking:

Answer 20

Question 21

Answer 21

A confluent trough

Question 22

Answer 22

confluent and curvature figure

Question 23

major and minor development areas

Answer 23

a confluent trough has

Question 24

Answer 24

a confluent trough figure

Question 25

Answer 25

confluent trough and ridge figure

Question 26

Answer 26

diffluent trough and ridge figure

Question 27

* amplification * ridges amplify * extension * troughs extend * also known as sharpening * declining * ridges decline * relaxation * troughs relax

Answer 27

How features evolve

Question 28

Answer 28

diffluent trough (extends/sharpen) & (relax)

Question 29

Answer 29

diffluent ridge (amplification/sharpens) & declines

Question 30

rise of pressure

Answer 30

diffluent ridge - confluent trough give rapid ..........................

Question 31

fall of pressure

Answer 31

diffluent trough - confluent ridge gives rapid

Question 32

1. consider an air parcel entering a jet 2. the parcel accelerates into the jet as PGF increases 3. air is transported across the jet entrance 4. which leads to areas of convergence and divergence aloft 5. and the reverse happens at the jet exit 6. remember Dines' two layer model -\> vertical motion 7. Descending air warms adiabatically - ascending air cools adiabatically 8. warming decrease temperature gradient at jet enterance -\> jet weakens 9. cooling increases temperature gradient at jet exit -\> jet strengthens

Answer 32

Jet propagation steps

Question 33

Answer 33

which leads to areas of convergence and divergence aloft and the reverse happens at the jet exit (figure)

Question 34

Answer 34

which leads to areas of convergence and divergence aloft and the reverse happens at the jet exit remember Dines' two layer model -\> vertical motion figure

Question 35

Answer 35

Jet propagation final figure

Question 36

Answer 36

blocking patterns

Question 37

Answer 37

an omega block figure

Question 38

Answer 38

omega blocking:

Question 39

Answer 39

a diffluent block

Question 40

Answer 40

diffluent blocking: