Models of Circulation YouTube Lecture Handouts
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3 Models of Circulation - Palmen Heat Convective Model & Rossby Waves in Climatology
Dr. Manishika Jain explains 3 models of circulation:
1. Single Cell Circulation Model
2. Tricellular Circulation Model
3. Palmen Heat Convective Model
Along with the concept of jet streams and rossby waves.
Models of Circulation Rossby Waves
- Cold wind from poles move towards equator and warm winds vice versa
- Distort the path of the jet stream travelling in a straight line
- Cause them to move in a wave like pattern or meander at various intervals
- Also due to intervening ridges on landforms like mountain, plateaus etc.
- Wavy pattern of the jet stream is known as Rossby waves.
- Some points in warmer latitudes below polar region get some cold pockets cause extremities in local temperature.
- Rossby waves create areas of high pressure (at ridges) and low pressure (at troughs) .
- When a high pressure is surrounded by low- creates anticyclones and cyclones.
Low Latitude Patterns
High Latitude Patterns – Most Common Pattern
High Latitude Patterns
High Zonal Index & Low Zonal Index
✍ Manishika