Results 21 to 30 of about 17,552 (267)

A Mechanism Denial Study on the Madden-Julian Oscillation

open access: yesJournal of Advances in Modeling Earth Systems, 2011
A series of Madden-Julian oscillation (MJO) mechanism-denial experiments is performed using an atmospheric general circulation model (AGCM). Daily climatological seasonal cycles of i) surface latent heat flux, ii) net radiative heating rate, and iii ...
In-Sik Kang, Adam H. Sobel, Daehyun Kim
doaj   +3 more sources

A pioneering time of discoveries in large-scale tropical meteorology: 1960 through 1972 [PDF]

open access: yesHistory of Geo- and Space Sciences, 2023
The Australian Bureau of Meteorology (http://www.bom.gov.au/climate/mjo, last access: 9 February 2023) states that “The Madden–Julian Oscillation (MJO) is a major fluctuation in tropical weather on weekly to monthly timescale.
R. A. Madden, R. A. Madden
doaj   +1 more source

Potential Predictability of the Madden‐Julian Oscillation in a Superparameterized Model

open access: yesGeophysical Research Letters, 2023
The Madden‐Julian Oscillation (MJO) is a promising target for improving sub‐seasonal weather forecasts. Current forecast models struggle to simulate the MJO due to imperfect convective parameterizations and mean state biases, degrading their forecast ...
Sarah Weidman, Zhiming Kuang
doaj   +1 more source

Deep learning for bias correction of MJO prediction

open access: yesNature Communications, 2021
The Madden-Julian Oscillation (MJO) is a crucial component of the tropical weather system, but forecasting it has been challenging. Here, the authors present a deep learning bias correction method that significantly improves multi-model forecasts of the ...
H. Kim, Y. G. Ham, Y. S. Joo, S. W. Son
doaj   +1 more source

Diurnal Cycle of Tropospheric Winds over West Sumatra and Its Variability Associated with Various Climate and Weather Modes

open access: yesAtmosphere, 2023
The typical diurnal variability of tropospheric winds over West Sumatra and their changes associated with El Niño Southern Oscillation, Quasi-Biennial Oscillation, Madden–Julian Oscillations and convectively coupled Kelvin waves during the extended ...
Wojciech Ryszard Szkolka   +5 more
doaj   +1 more source

Improved MJO Forecasts Using the Experimental Global‐Nested GFDL SHiELD Model

open access: yesGeophysical Research Letters, 2023
Sitting at the crossroads of weather and climate, the Madden‐Julian Oscillation (MJO) is considered a primary source of subseasonal predictability. Despite its importance, numerical models struggle with MJO prediction as its convection moves through the ...
Breanna L. Zavadoff   +5 more
doaj   +1 more source

Is the Madden‐Julian Oscillation a Moisture Mode?

open access: yesGeophysical Research Letters, 2023
The governing thermodynamics of the Madden‐Julian Oscillation (MJO) is examined using sounding and reanalysis data. On the basis of four objective criteria, results suggest that the MJO behaves like a moisture mode–a system whose thermodynamics is ...
Víctor C. Mayta   +1 more
doaj   +1 more source

Subseasonal midlatitude prediction skill following Quasi-Biennial Oscillation and Madden–Julian Oscillation activity [PDF]

open access: yesWeather and Climate Dynamics, 2020
The Madden–Julian Oscillation (MJO) is known to force extratropical weather days to weeks following an MJO event through excitation of stationary Rossby waves, also referred to as tropical–extratropical teleconnections.
K. J. Mayer, E. A. Barnes
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

Influence of the Madden-Julian Oscillation on upper tropospheric humidity [PDF]

open access: yes, 2002
Variations of upper tropospheric humidity (UTH) and cold cloud in the tropics reveal coherent changes that propagate eastward from the Indian Ocean into the Pacific. The coherence of UTH is high at periods of 30–90 days along the equator.
Pumphrey, H. C.   +3 more
core   +1 more source

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