The macroscale deals with systems with global size, such as the Madden-Julian Oscillation.

A pulse in the Madden-Julian oscillation, together with a convective Kelvin wave allowed the system to develop.

In particular, this may have been caused by a strong Madden-Julian oscillation which occurred in the tropics in March.

Moist static energy has also been used to study the Madden-Julian oscillation (MJO).

The conditions are often created by the Madden-Julian oscillation, an equatorial rainfall pattern which feeds its moisture into this pattern.

Over the next couple of days the disturbance gradually developed further while moving towards the northwest, with a Madden-Julian oscillation increasing the system boundary layers rotation.

Thunderstorm activity along the feature magnifies over three or more days when the Madden-Julian Oscillation passes into the region, due to the enhanced upper divergence.

In general, westerly wind increases associated with the Madden-Julian Oscillation lead to increased tropical cyclogenesis in all basins.

During the course of the year, large-scale factors such as an El Niño and two Madden-Julian oscillations greatly contributed to the changed pattern.

On July 21 as the Madden-Julian oscillation entered its fifth phase, the Bay of Bengal became favourable for tropical cyclogenesis.

California also enters a wet pattern when thunderstorm activity within the tropics associated with the Madden-Julian Oscillation nears 150E longitude.

The Madden-Julian oscillation (MJO) is the largest element of the intraseasonal (30-90 days) variability in the tropical atmosphere.

Coinciding with a Madden-Julian oscillation, a weak surface low pressure area developed on June 19, and subsequently moved inland over the Yucatán Peninsula.

It developed due to an increase in the Madden-Julian oscillation (MJO), which moved eastward across the Indian Ocean.

The development of cyclones during the season was mainly, aside from Trina, tied into Madden-Julian oscillation (MJO) phases.

Low-latitude and low-level westerly wind bursts associated with the Madden-Julian oscillation can create favorable conditions for tropical cyclogenesis by initiating tropical disturbances.

The Madden-Julian Oscillation (MJO) is an equatorial traveling pattern of anomalous rainfall that is planetary in scale.

A major surge of the Madden-Julian oscillation in early April resulting in the development of a tropical depression on April 4 near the Tanimbar Islands.

Climate cycles such as ENSO and the Madden-Julian Oscillation modulate the timing and frequency of tropical cyclone development.

In the middle of February 2004, a monsoon trough formed in the southwest Pacific Ocean during the middle of a Madden-Julian oscillation pulse.

In mid-December 2001, at the end of a Madden-Julian oscillation pulse, twin equatorial monsoonal troughs developed in the Northern and Southern Hemispheres.

There appears to be a 15-25 day cycle in thunderstorm activity associated with the monsoon trough, which is roughly half the wavelength of the Madden-Julian Oscillation, or MJO.

The main reason for this appears to be the phase of the Madden-Julian oscillation, or MJO, which is normally in opposite modes between the two basins at any given time.

A tropical disturbance developed in the east of the region monitored by Réunion on 30 August, from an active monsoon band that coincided with a burst in the Madden-Julian oscillation.

On August 30, an area of low pressure developed near the edge of Météo-France's area of responsibility within an unseasonably active monsoonal band which coincided with the Madden-Julian oscillation.