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The MJO is a coupling between atmospheric circulation and deep tropical convection which tends to have a period of variability of 1-3 months. It is characterized by tropical convection propogating eastward, starting in the Indian ocean and moving through the Pacific Ocean. It is linked to other modes of low frequency variability such as ENSO, but is not necessarily causal. Its impacts include primarily rainfall anomalies in parts of the Eastern tropics, and more subtle effects on moisture and energy getting into the mid- and high latitudes.

It is displayed using a Hovmöller diagram.

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4mo ago

The Madden-Julian Oscillation (MJO) is a tropical atmospheric disturbance that moves eastward across the globe, typically over a period of 30-60 days. It is characterized by increased thunderstorm activity and can influence weather patterns in various regions around the world, impacting phenomena such as monsoons and tropical cyclones.

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Q: What is the Madden Julian oscillation?
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