A common practice in the design of forecast models for ENSO is to couple ocean general circulation models to simple atmospheric models. Therefore, by construction these models (known as hybrid ENSO models) do not resolve various kinds of atmospheric variability [e.g., the Madden–Julian oscillation (MJO) and westerly wind bursts] that are often regarded as “unwanted noise.” In this work the sens...

The 30–60-day Madden–Julian oscillation (MJO) has been documented in previous research to impact tropical cyclone (TC) activity for various tropical cyclone basins around the globe. TheMJOmodulates largescale convective activity throughout the tropics, and concomitantly modulates other fields known to impact tropical cyclone activity such as vertical wind shear, midlevelmoisture, vertical motio...

1. Introduction A number of studies have shown that the Madden-Julian Oscillation (MJO) have a strong influence on the atmospheric circulation and precipitation patterns in the Recent studies also suggest that the MJO-related tropical forcing is linked to precipitation events along the west coast of the United State during the winter season (Mo and Higgins 1998; Higgins et al. 2000). Dynamical ...

JANUARY 2003 AMERICAN METEOROLOGICAL SOCIETY | S ince its discovery by Madden and Julian (1971, 1972) over two decades ago, the Madden–Julian oscillation (MJO) has continued to be a topic of significant interest due to its complex nature (Madden and Julian 1994) and the wide range of phenomena with which it interacts. The onset and break activity of the Asian–Australian monsoon system is strong...

12 The stochastic skeleton model is a simpli ed model for the Madden-Julian oscil13 lation (MJO) and intraseasonal-planetary variability in general involving coupling of 14 planetary-scale dry dynamics, moisture, and a stochastic parametrization for the unre15 solved details of synoptic-scale activity. The model captures the fundamental features 16 of the MJO such as the intermittent growth and...

The accuracy of synoptic-based weather forecasting deteriorates rapidly after five days and is not routinely available beyond 10 days. Conversely, climate forecasts are generally not feasible for periods of less than 3 months, resulting in a weather-climate gap. The tropical atmospheric phenomenon known as the Madden-Julian Oscillation (MJO) has a return interval of 30 to 80 days that might par...

The large-scale equatorial circulation known as the Madden–Julian oscillation (MJO) has been shown to impact tropical cyclone activity in several basins around the globe. In this paper, the author utilizes an MJO index created by Wheeler and Hendon to examine its impacts on tropical genesis and intensification in the Atlantic. Large differences in frequency and intensity of tropical cyclone act...

The Madden-Julian Oscillation (MJO), an eastward-propagating equatorial disturbance most active during the boreal winter, dominates atmospheric intraseasonal variability in the tropical Eastern Hemisphere. The MJO involves cyclic patterns of suppressed convection and intense rainfall, has a period ranging from 20-100 days, and is manifested in numerous atmospheric and oceanic variables. This st...

Madden Julian Oscillation (MJO) based on its propagation through the maritime continent can be divided into two types, namely MJO-C (Crossing) and MJO-B (Blocked) as evidenced by spatial diagram of Hovmöller OLR anomaly. This study aimed to determine effect MJO variations, sea surface temperature rainfall in Indonesian region period 1998 2015. The data used this are reanalysis models including ...