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Nov - Climatology - Coggle Diagram
Nov - Climatology
Madden–Julian Oscillation (MJO)
Intraseasonal 30-to-90 day
variability in tropical atmosphere
MJO characterized by
eastward progression
suppressed tropical rainfall
observed mainly
Indian and Pacific Ocean
moving band of rain clouds
travels around
globe spanning
12000-20000 km
across tropical oceans
pattern of tropical rainfall
moves over
cooler ocean water of eastern pacific
again reappears
passing over
warmer waters over
pacific coast of central america
low amplitude
over tropical atlantic
higher amplitude
over Indian ocean
October to December
favourable months
for cyclones development
in Bay of Bengal and Arabian Sea
Reasons
Weak La Nina conditions
equatorial Pacific Ocean
cooler than
normal sea surface temperatures
high wind shear
btw different atmospheric levels
vertical wind shear
created
due to significant wind speed
difference observed
btw higher and lower atmospheric levels