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The effect of the MJO on the energetics of El Niño

Journal Article · · Climate Dynamics
 [1];  [2]
  1. George Mason Univ., Fairfax, VA (United States). Dept. of Atmospheric, Oceanic, and Earth Sciences
  2. George Mason Univ., Fairfax, VA (United States). Dept. of Atmospheric, Oceanic, and Earth Sciences; Center for Ocean-Land-Atmosphere Studies, Fairfax, VA (United States)
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The energy budget of the Pacific Ocean is evaluated in the Super-Parameterized Community Climate Model version 4 (SP-CCSM4) on intraseasonal time scales. The budget terms are decomposed to isolate the MJO influence and the ocean current associated with Kelvin waves. Using this decomposition, one can distinguish between El Niño events with strong and weak MJO influence. Composites of El Niño events based on the wind power component associated with the MJO induced wind stress and oceanic Kelvin waves ( WMJO,K ) are compared with composites based only on the atmospheric variability and based only on the oceanic variability. It was found that the composite of events when WMJO,K is near maximum (+ NMJO,K) shows a greater magnitude of mean perturbation wind power, buoyancy power, and available potential energy than any other case, which is consistent with the greater amplitude Kelvin wave perturbations on the thermocline, as well as the greater amplitude of SST anomalies at the peak of the event. For + NMJO,K, latent heat flux anomalies out of the ocean along the coast of New Guinea are seen coincident with deepening of the mixed layer depth there, suggesting that this is an important region for the thermodynamic influence of the MJO on the ocean. Latent heat flux anomalies into the ocean are seen across the ITCZ in the spring, suggesting a basin wide influence by the MJO on the ocean surface radiation budget in + NMJO,K.

Research Organization:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC); Univ. of California, Oakland, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
DOE Contract Number:
AC02-05CH11231
OSTI ID:
1543487
Journal Information:
Climate Dynamics, Vol. 51, Issue 7-8; ISSN 0930-7575
Publisher:
Springer-Verlag
Country of Publication:
United States
Language:
English

References (68)

The Energetics of El Niño and La Niña journal May 2000
El Nino on the Devil's Staircase: Annual Subharmonic Steps to Chaos journal April 1994
The role of off-equatorial surface temperature anomalies in the 2014 El Niño prediction journal January 2016
A Linear Stochastic Dynamical Model of ENSO. Part I: Model Development journal August 2000
A Stability Analysis of Tropical Ocean–Atmosphere Interactions: Bridging Measurements and Theory for El Niño journal July 2001
Observed El Niño SSTA Development and the Effects of Easterly and Westerly Wind Events in 2014/15 journal February 2017
The impact of westerly wind bursts on the diversity and predictability of El Niño events: An ocean energetics perspective: Hu et al.: WWB and ENSO diversity: energetics view journal July 2014
A Balance Condition for Stochastic Numerical Models with Application to the El Niño-Southern Oscillation journal September 1994
Deep Ocean Impact of a Madden-Julian Oscillation Observed by Argo Floats journal December 2007
Subseasonal Atmospheric Variability and El Niño Waveguide Warming: Observed Effects of the Madden–Julian Oscillation and Westerly Wind Events journal May 2014
Stochastic Dynamics of El Niño–Southern Oscillation* journal January 1999
Oceanic Kelvin Waves and the Madden–Julian Oscillation journal January 1998
An All-Season Real-Time Multivariate MJO Index: Development of an Index for Monitoring and Prediction journal August 2004
Impact of dynamical and stochastic processes on the predictability of ENSO journal August 1996
The Role of Stochastic Forcing in Modulating ENSO Predictability journal August 2004
Climate simulations and projections with a super-parameterized climate model journal October 2014
MJO-related oceanic Kelvin waves and the ENSO cycle: A study with the NCEP Global Ocean Data Assimilation System: OCEANIC KELVIN WAVES AND THE ENSO CYCLE journal April 2005
How the July 2014 easterly wind burst gave the 2015-2016 El Niño a head start: EFFECT OF SUMMER 2014 ON 2015 EL NINO journal June 2016
The Intraseasonal Oscillation in Eastern Pacific Sea Levels: How Is It Forced? journal November 1987
Ensemble-mean dynamics of the ENSO recharge oscillator under state-dependent stochastic forcing journal January 2007
Madden-Julian Oscillation journal January 2005
Forcing of intraseasonal Kelvin waves in the equatorial Pacific journal January 1995
Role of high- and low-frequency winds and wave reflection in the onset, growth and termination of the 1997?1998 El Ni�o journal March 2004
Rectification of the Madden–Julian Oscillation into the ENSO Cycle journal October 2000
Stochastic Forcing of ENSO by the Intraseasonal Oscillation journal May 1999
On the 30–60 Day Oscillation and the Prediction of El Niño journal November 1989
Dynamics and Thermodynamics of a Warming Event in a Coupled Tropical Atmosphere–Ocean Model journal October 1988
Westerly Wind Bursts: ENSO’s Tail Rather than the Dog? journal December 2005
Mixed Layer Temperature Balance on Intraseasonal Timescales in the Equatorial Pacific Ocean* journal September 2002
A Study of Self-excited Oscillations of the Tropical Ocean–Atmosphere System. Part II: Nonlinear Cases journal May 1991
Extreme Noise–Extreme El Niño: How State-Dependent Noise Forcing Creates El Niño–La Niña Asymmetry journal August 2016
The Oceanic Response to the Madden-Julian Oscillation and ENSO journal January 2009
Exceptionally strong easterly wind burst stalling El Niño of 2014 journal February 2016
A simple approach to quantifying the noise–ENSO interaction. Part II: the role of coupling between the warm pool and equatorial zonal wind anomalies journal July 2016
SST Anomalies of ENSO and the Madden–Julian Oscillation in the Equatorial Pacific* journal September 2002
How important is intraseasonal surface wind variability to real-time ENSO prediction?: ISV IMPACTS ON ENSO PREDICTION journal July 2011
Mechanisms controlling mixed-layer temperature variability in the eastern tropical Pacific on the intraseasonal timescale: INTRASEASONAL MLT BUDGET IN EASTERN PACIFIC journal September 2011
The Nonnormal Nature of El Niño and Intraseasonal Variability journal October 1999
A Delayed Action Oscillator for ENSO journal November 1988
An Equatorial Ocean Recharge Paradigm for ENSO. Part I: Conceptual Model journal April 1997
The Influence of Atmospheric Noise and Uncertainty in Ocean Initial Conditions on the Limit of Predictability in a Coupled GCM journal July 2008
Second and first baroclinic Kelvin modes in the equatorial Pacific at intraseasonal timescales journal January 2003
Drivers of coupled model ENSO error dynamics and the spring predictability barrier journal July 2016
Strong and moderate nonlinear El Niño regimes journal June 2015
Equatorial waves and the 1997-98 El Niño journal October 1999
Irregularity and Locking to the Seasonal Cycle in an ENSO Prediction Model as Explained by the Quasi-Periodicity Route to Chaos journal February 1995
Indo-Pacific Sea Surface Temperature Perturbations Associated with Intraseasonal Oscillations of Tropical Convection journal July 2007
The Optimal Growth of Tropical Sea Surface Temperature Anomalies journal August 1995
The mixed layer of the western equatorial Pacific Ocean journal January 1991
Atmosphere‐ocean coupled processes in the Madden‐Julian oscillation journal November 2015
A Model El Niñ–Southern Oscillation journal October 1987
Modulation of equatorial Pacific westerly/easterly wind events by the Madden–Julian oscillation and convectively-coupled Rossby waves journal June 2015
The Life Cycle of the Madden–Julian Oscillation journal August 1994
Intraseasonal Air–Sea Interactions at the Onset of El Niño journal April 2001
Moist Static Energy Budget of MJO-like Disturbances in the Atmosphere of a Zonally Symmetric Aquaplanet journal April 2012
About the role of Westerly Wind Events in the possible development of an El Niño in 2014 journal September 2014
Oceanic Rossby Wave Dynamics and the ENSO Period in a Coupled Model journal July 1997
Interactions between the seasonal cycle and the Southern Oscillation - Frequency entrainment and chaos in a coupled ocean-atmosphere model journal December 1994
ENSO Transition, Duration, and Amplitude Asymmetries: Role of the Nonlinear Wind Stress Coupling in a Conceptual Model journal December 2013
Large scale dynamics and MJO forcing of ENSO variability journal January 2006
The dynamics of error growth and predictability in a coupled model of ENSO journal July 1996
ENSO theory journal June 1998
A Theory for the Limitation of ENSO Predictability Due to Stochastic Atmospheric Transients journal March 1997
Intraseasonal Perturbations in Sea Surface Temperatures of the Equatorial Eastern Pacific and Their Association with the Madden–Julian Oscillation* journal March 2001
Mechanisms governing sea surface temperature anomalies in the eastern tropical Pacific Ocean associated with the boreal winter Madden-Julian Oscillation journal January 2010
The seasonally changing cloud feedbacks contribution to the ENSO seasonal phase-locking journal February 2016
Seasonal Dependence of the MJO–ENSO Relationship journal February 2007
Tropical Pacific baroclinic mode contribution and associated long waves for the 1994–1999 period from an assimilation experiment with altimetric data journal January 2003

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