Summary_monsoon_Enso_MJO

Summary_monsoon_Enso_MJO - Summary: Global Monsoons, ENSO...

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Unformatted text preview: Summary: Global Monsoons, ENSO and The Madden-Julian Oscillation Outline: Review the main characteristics of the monsoon Explore further the North and South America monsoons Explore the importance of ENSO for the monsoons and how this phenomenon impacts the USA Revisit the relationships between the MJO and variations in climate in tropical and extratropical regions SUMMARY: MONSOONS The Monsoon Makers: The Monsoon Makers: Seasonal heating; Moisture Processes; The Earths Rotation. Common features in monsoon systems: Common features in monsoon systems: Cloudiness and heavy rainfall [moisture processes]; [moisture processes]; Cross-equator low level jet [seasonal heating + moisture [seasonal heating + moisture processes] processes]; Low level circulation influenced by Subtropical anticyclones [moisture [moisture processes + Earths rotation]; processes + Earths rotation]; Monsoon trough (low level convergence) and associated convergence zones [moisture processes + Earths rotation]; [moisture processes + Earths rotation]; Upper level high pressure (upper level divergence) and associated upper level return flow [moisture processes + Earths rotation]; [moisture processes + Earths rotation]; Mid-latitude disturbances (NOT in African monsoon). SUMMARY Although three main monsoon systems were traditionally recognized (African, Asian and Australian), recent studies have shown that a monsoon regime exists over tropical America. America America n 1-Question for Debate: Think of Earth as a different planet with a single continent (more or less like an island) as indicated below. Discuss with your colleagues the following issues: a)Do you think this planet would have a monsoon system and why? b)How do you think would be the circulation, low level pressure and winds during the Northern Hemisphere winter? Equator Cancer Capricorn Heat: Low pressur e December High Elevation A A A A 1-Question for Debate: Think of Earth as a different planet with a single continent (more or less like an island) as indicated below. Discuss with your colleagues the following issues: a)Do you think this planet would have a monsoon system and why? b)How do you think would be the circulation, low level pressure and winds during the Northern Hemisphere summer? Equator Cancer Capricorn Hea tLo w July? High Elevation A A Important factors to consider: Presence of high elevation (topography) Area of the continent in tropical regions Reverse of the winds may depend on the extent of land over extratropical regions A Of course, patterns of winds depend on the presence of continents and oceans. In our planet the distribution of land and ocean is quite complex Differences in the thermal capacity of Oceans and Continents create differential heating Differential heating create temperature gradients that, in turn, create pressure gradients....
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This note was uploaded on 12/28/2011 for the course GEOG 133 taught by Professor Leila during the Fall '09 term at UCSB.

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Summary_monsoon_Enso_MJO - Summary: Global Monsoons, ENSO...

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