Impact of a modified convective scheme on the Madden-Julian Oscillation and El Niño - Southern Oscillation in a coupled climate model

Xiaoqing Wu; Liping Deng; Xiaoling Song; Guido Vettoretti; W. Richard Peltier; Guang Jun Zhang

doi:10.1029/2007GL030637

Impact of a modified convective scheme on the Madden-Julian Oscillation and El Niño - Southern Oscillation in a coupled climate model

Xiaoqing Wu^*, Liping Deng, Xiaoling Song, Guido Vettoretti, W. Richard Peltier, Guang Jun Zhang

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

53 Scopus citations

Abstract

The connection between the intraseasonal Madden-Julian Oscillation (MJO) and interannual El Niño - Southern Oscillation (ENSO) has been proposed and investigated for the last two decades. However, many fully coupled atmosphere-ocean general circulation models (GCMs) are still unable to simulate many important characteristics of these two phenomena partly due to the great uncertainty in the representation of subgrid-scale cloud systems. We report herein the simulation of an El Niño in a fully coupled GCM with a modified convection scheme, which captures many of the observed features of the 1997/1998 El Niño event. The representation of convection in the coupled model plays a major role in modeling both interannual ENSO and intraseasonal MJO variability in closer accord with observations, and in reproducing the evolution of 1997/1998 El Niño-type events.

Original language	English (US)
Article number	L16823
Journal	Geophysical Research Letters
Volume	34
Issue number	16
DOIs	https://doi.org/10.1029/2007GL030637
State	Published - Aug 28 2007
Externally published	Yes

ASJC Scopus subject areas

Geophysics
General Earth and Planetary Sciences

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1029/2007GL030637

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title = "Impact of a modified convective scheme on the Madden-Julian Oscillation and El Ni{\~n}o - Southern Oscillation in a coupled climate model",

abstract = "The connection between the intraseasonal Madden-Julian Oscillation (MJO) and interannual El Ni{\~n}o - Southern Oscillation (ENSO) has been proposed and investigated for the last two decades. However, many fully coupled atmosphere-ocean general circulation models (GCMs) are still unable to simulate many important characteristics of these two phenomena partly due to the great uncertainty in the representation of subgrid-scale cloud systems. We report herein the simulation of an El Ni{\~n}o in a fully coupled GCM with a modified convection scheme, which captures many of the observed features of the 1997/1998 El Ni{\~n}o event. The representation of convection in the coupled model plays a major role in modeling both interannual ENSO and intraseasonal MJO variability in closer accord with observations, and in reproducing the evolution of 1997/1998 El Ni{\~n}o-type events.",

author = "Xiaoqing Wu and Liping Deng and Xiaoling Song and Guido Vettoretti and Peltier, {W. Richard} and Zhang, {Guang Jun}",

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AU - Wu, Xiaoqing

AU - Deng, Liping

AU - Song, Xiaoling

AU - Vettoretti, Guido

AU - Peltier, W. Richard

AU - Zhang, Guang Jun

PY - 2007/8/28

Y1 - 2007/8/28

N2 - The connection between the intraseasonal Madden-Julian Oscillation (MJO) and interannual El Niño - Southern Oscillation (ENSO) has been proposed and investigated for the last two decades. However, many fully coupled atmosphere-ocean general circulation models (GCMs) are still unable to simulate many important characteristics of these two phenomena partly due to the great uncertainty in the representation of subgrid-scale cloud systems. We report herein the simulation of an El Niño in a fully coupled GCM with a modified convection scheme, which captures many of the observed features of the 1997/1998 El Niño event. The representation of convection in the coupled model plays a major role in modeling both interannual ENSO and intraseasonal MJO variability in closer accord with observations, and in reproducing the evolution of 1997/1998 El Niño-type events.

AB - The connection between the intraseasonal Madden-Julian Oscillation (MJO) and interannual El Niño - Southern Oscillation (ENSO) has been proposed and investigated for the last two decades. However, many fully coupled atmosphere-ocean general circulation models (GCMs) are still unable to simulate many important characteristics of these two phenomena partly due to the great uncertainty in the representation of subgrid-scale cloud systems. We report herein the simulation of an El Niño in a fully coupled GCM with a modified convection scheme, which captures many of the observed features of the 1997/1998 El Niño event. The representation of convection in the coupled model plays a major role in modeling both interannual ENSO and intraseasonal MJO variability in closer accord with observations, and in reproducing the evolution of 1997/1998 El Niño-type events.

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Impact of a modified convective scheme on the Madden-Julian Oscillation and El Niño - Southern Oscillation in a coupled climate model

Abstract

ASJC Scopus subject areas

UN SDGs

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