5 This paper studies the significance of MJO convection asymmetry through composites 6 of kinematic and thermodynamic fields associated with predominantly symmetric and pre7 dominantly antisymmetric MJO convection using ECMWF Interim Reanalysis. The MJO 8 events were identified based on the primary MJO modes extracted from the IR brightness 9 temperature in Part I of this work. The predominantl...

This study investigates 1) the eastward propagation of the Madden–Julian oscillation (MJO) and global occurrences of extreme precipitation, 2) the degree to which a general circulation model with a relatively realistic representation of the MJO simulates its influence on extremes, and 3) a possible modulation of the MJO on potential predictability of extreme precipitation events. The observatio...

The boreal winter response of the ocean mixed layer to the Madden–Julian oscillation (MJO) in the IndoPacific region is determined using in situ observations from the Argo profiling float dataset. Composite averages over numerous events reveal that the MJO forces systematic variations in mixed layer depth and temperature throughout the domain. Strong MJO mixed layer depth anomalies (.15 m peak ...

High-resolution simulations over a large tropical domain (;208S–208N, 428E–1808) using both explicit and parameterized convection are analyzed and compared to observations during a 10-day case study of an active Madden–Julian oscillation (MJO) event. The parameterized convection model simulations at both 40and 12-km grid spacing have a very weak MJO signal and little eastward propagation. A 4-k...

Whether there is an independent component of MJO associated with El Niño Southern Oscillation (ENSO) is investigated using Xie-Arkin precipitation and NCEP reanalysis pentad data. The analysis tool employed here is the cyclostationary empirical orthogonal function (CSEOF) technique. As a result of the analysis, the evolution of the precipitation pattern for the Asian-Pacific domain is found to ...

The role of air–sea coupling in the simulation of the Madden–Julian oscillation (MJO) is explored using two configurations of the Hadley Centre atmospheric model (AGCM), GA3.0, which differ only in F, a parameter controlling convective entrainment and detrainment. Increasing F considerably improves deficient MJO-like variability in the Indian and Pacific Oceans, but variability in and propagati...

The Tibetan Plateau (TP), known as the third pole of the Earth, has snow cover with intraseasonal to decadal variability that affects weather and climate both inside and outside the TP. However, the factors that generate the TP snow cover (TPSC) anomalies at the intraseasonal time-scale are unclear. This report reveals the influence of the Madden‒Julian oscillation (MJO), which is the most domi...

Abstract To better understand the Madden–Julian Oscillation (MJO) in Maritime Continent (MC), events from 1980 to 2019 were classified as active or weakening according propagation characteristics and amplitude changes two leading indices, Real-time Multivariate MJO (RMM) index Outgoing Longwave Radiation (OLR) Index (OMI). Active had larger amplitudes than events, those differences appeared at ...

[1] The Madden-Julian Oscillation (MJO) is the primary mode of large-scale intraseasonal variability in the tropics. Recent work has connected the MJO to atmospheric variability in mid-latitudes. We focus on relationships between the MJO and wintertime surface air temperatures in the Northern Hemisphere high latitudes. The MJO is diagnosed using principal EOF of 850 hPa zonal winds from the NCE...