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The output is rather different from the shorter period output of medium range ensemble products.  It provides a more general overview of the forecast up to Day46. It consists of an ensemble of 100 members plus one control member and is run every day based upon 00UTC data.

Output focuses , focusing mainly on the week-to-week changes in the weather rather than attempting to give unsupportable detail on individual days.  Output is mostly in the form of anomalies relative to ER-M-climate and is mainly shown as 7-day means for calendar weeks Monday-Sunday.   Specialised products for the extended range also include information on potential tropical cyclone activity and the Madden-Julian Oscillation (MJO) during the coming month.

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