AntiCyclones Youtube Lecture Handouts
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AntiCyclones Image
AntiCyclones Image
| Features | Cold Anticyclone | Warm Anticyclone |
| Characteristics | Shallow & extends upto 23 km | Deep, slow moving & associated with blocking in higher latitudes |
| Origin | Persistent radiational cooling of land surface & cold overlying atmosphere | Convergence in upper troposphere with subsidence beneath |
| Intensity | Decreases with height | Increases with height |
| Regions of Formation | High latitude continental interiors e.g. Siberia | Subtropical belt latitude e.g. Bermuda, Greenland, North Canada etc. |
| Troposphere Temperature | Colder | Warmer |
| Tropopause Pressure | Lower | Higher |
| Stratosphere Temperature | Warmer | Colder |
| Persistence | More immobile & less persistence | Persist for days, weeks, & even months |
Anticyclone to Cyclone
Anticyclone to Cyclone Image
Anticyclone to Cyclone Image
| Features | Anticyclone | Cyclone |
| Surface pressure | High | Low |
| Air flow | Diverges at surface | Converges at surface |
| Vertical air motion | Subsides | Rises |
| Wind speed | Weak | Moderate to strong |
| Precipitation | Generally dry | Wet |
| Cloudiness | No clouds or stratus clouds | Nimbostratus or cumulonimbus clouds |
| Stability | Stable air with no subsidence | May be unstable |
| Temperature gradient | Little temperature contrast across high | Strong temperature contrasts at fronts |
| Speed of movement | Slow moving or stagnant | Generally mobile, moves west-east |
-Manishika