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Multiple Choice Questions

Consider the following statements about Madden Julian oscillation MJO 1 Unlike ENSO El nino southern...........

Geography and Environment (MPPCS) World climates

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Consider the following statements about Madden Julian oscillation (MJO):

1. Unlike ENSO (El nino southern oscillation) which is a standing pattern, MJO is a travelling pattern.

2. The MJO is characterized by its movement from east to west.

3. The tropical cyclone activities are also modulated by the MJO.

Which of the above statements are incorrect?

1,and 3 only

2, and 3 only

1, and 2 only

All of the above

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Explanation:

EXPLANATION:

STATEMENT 2 AND 3 IS INCORRECT.

MJO is a travelling pattern of atmospheric disturbance which moves from west to east and not east to west.

The MJO can be characterized as an eastward moving “pulse” of cloud and rainfall near the equator that typically recurs every 30 to 60 days and is a feature of the tropical atmosphere.
MJO effects are most evident over the Indian Ocean and western equatorial Pacific. It influences the timing development and strength of the major global monsoon patterns including the Indian and Australian monsoons.
In 1971 two scientists Roland Madden and Paul Julian stumbled upon a 40-50 day oscillation when analysing zonal wind anomalies in the tropical Pacific. They used ten years of pressure records at Canton south of Pacific and upper level winds at Singapore.
The oscillation of surface and upper-level winds was remarkably clear in Singapore which became known as the Madden and Julian Oscillation (MJO).

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