Results 11 to 20 of about 849 (154)

Madden–Julian Oscillation

open access: yesAtmosphere, 2018
The Madden–Julian Oscillation (MJO) is the most important mode of tropical intraseasonal variability. [...]
Charles Jones
doaj   +1 more source

The first observational evidence of a mixed Rossby–gravity wave contribution to triggering the onset process of the South China Sea summer monsoon

open access: yesEnvironmental Research Letters, 2023
Convectively coupled equatorial waves (Kelvin waves, equatorial Rossby waves, the Madden–Julian Oscillation, tropical depression–type waves, and mixed Rossby–gravity (MRG) waves) are important components of the tropical atmosphere.
Peng Hu   +5 more
doaj   +1 more source

Intraseasonal to interannual variability of Kelvin wave momentum fluxes as derived from high-resolution radiosonde data [PDF]

open access: yesAtmospheric Chemistry and Physics, 2017
Observational estimates of Kelvin wave momentum fluxes in the tropical lower stratosphere remain challenging. Here we extend a method based on linear wave theory to estimate daily time series of these momentum fluxes from high-resolution radiosonde ...
J. P. Sjoberg   +3 more
doaj   +1 more source

Interdecadal variability of intensity of the Madden–Julian oscillation

open access: yesAtmospheric Science Letters, 2021
The interdecadal variability of intensity of the Madden–Julian oscillation (MJO) during boreal winter was investigated based on two reanalysis datasets (NOAA 20CR and ERA‐20C).
Ziyue Wang, Tim Li, Ying Sun
doaj   +1 more source

Multiple‐Instance Superparameterization: 2. The Effects of Stochastic Convection on the Simulated Climate

open access: yesJournal of Advances in Modeling Earth Systems, 2019
The cloud‐permitting model (CPM) of the superparameterized Community Atmosphere Model (SP‐CAM) is a stochastic parameterization. As reported in a companion paper, we have created a variant of SP‐CAM, called MP‐CAM, that uses the averaged feedback of 10 ...
Todd R. Jones   +2 more
doaj   +1 more source

An Analysis of Anomalous Winter and Spring Tornado Frequency by Phase of the El Niño/Southern Oscillation, the Global Wind Oscillation, and the Madden-Julian Oscillation

open access: yesAdvances in Meteorology, 2018
Winter and spring tornado activity tends to be heightened during the La Niña phase of the El Niño/Southern Oscillation and suppressed during the El Niño phase.
Todd W. Moore   +2 more
doaj   +1 more source

Drivers of uncertainty in future projections of Madden–Julian Oscillation teleconnections [PDF]

open access: yesWeather and Climate Dynamics, 2021
Teleconnections from the Madden–Julian Oscillation (MJO) are a key source of predictability of weather on the extended timescale of about 10–40 d. The MJO teleconnection is sensitive to a number of factors, including the mean dry static stability, the ...
A. M. Jenney   +3 more
doaj   +1 more source

Modulation of the Westerly and Easterly Quasi-Biennial Oscillation Phases on the Connection between the Madden–Julian Oscillation and the Arctic Oscillation

open access: yesAtmosphere, 2020
Previous studies have revealed the relationship between the Madden−Julian oscillation (MJO) and the Arctic Oscillation (AO). The MJO phase 2/3 is followed by the positive AO phase, and the MJO phase 6/7 is followed by the negative AO phase.
Lei Song, Renguang Wu
doaj   +1 more source

Modulation of Polar Low Activity by the Madden‐Julian Oscillation

open access: yesGeophysical Research Letters, 2023
The impacts of the Madden‐Julian Oscillation (MJO) on polar low (PL) activity are examined. We found that PL frequency increases over the Irminger Sea and decreases over the Norwegian‐Barents Seas following the MJO Phases 2–4, and nearly opposite changes
Zhuo Wang, Kevin Boyd, John E. Walsh
doaj   +1 more source

Seasonal Variability of Precipitating Systems in Four Radar Domains of Northeast Brazil

open access: yesInternational Journal of Climatology, EarlyView.
This study analyzes the climatology and evaluates how the physical aspects of precipitating systems are influenced by the dry and wet seasons in Northeast Brazil, highlighting seasonal variations in the frequency, size, intensity, and duration of these systems in the regions of Natal, Maceió, Petrolina, and Salvador.
Amanda Carolina da Silva Queiroz   +1 more
wiley   +1 more source

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