El Niño and La Niña events in the tropical Pacific have significant and disrupting impacts on
the global atmospheric and oceanic circulation. El Niño Southern Oscillation (ENSO) …

Since its discovery in the early 1970s, the crucial role of the Madden‐Julian Oscillation
(MJO) in the global hydrological cycle and its tremendous influence on high‐impact climate …

The stratosphere has been identified as an important source of predictability for a range of
processes on subseasonal to seasonal (S2S) time scales. Knowledge about S2S …

Abstract The Northern Hemisphere (NH) polar winter stratosphere of 2019/2020 featured an
exceptionally strong and cold stratospheric polar vortex. Wave activity from the troposphere …

The Madden—Julian Oscillation (MJO) has been diagnosed in the World Weather Research
Program (WWRP)/World Climate Research Program (WCRP) Sub‐seasonal to Seasonal …

Abstract The Madden–Julian Oscillation (MJO) is the most dominant mode of subseasonal
variability in the tropics, characterized by an eastward-moving band of rain clouds. The MJO …

Interannual variation of seasonal-mean tropical convection over the Indo-Pacific region is
primarily controlled by El Niño–Southern Oscillation (ENSO). For example, during El Niño …

Abstract Madden‐Julian oscillation (MJO), the dominant mode of intraseasonal variability in
the tropical troposphere, has a significant impact on global weather and climate. Here we …

Pronounced changes in the Arctic environment add a new potential driver of anomalous
weather patterns in midlatitudes that affect billions of people. Recent studies of these …

Abstract The Madden-Julian Oscillation (MJO) simulation diagnostics developed by MJO
Working Group and the process-oriented MJO simulation diagnostics developed by MJO …