DOI: 10.1007/s00382-017-4047-5
Scopus记录号: 2-s2.0-85038395773
论文题名: The effect of the MJO on the energetics of El Niño
作者: Lybarger N.D. ; Stan C.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2018
卷: 51, 期: 2018-07-08 起始页码: 2825
结束页码: 2839
语种: 英语
Scopus关键词: climate modeling
; decomposition analysis
; El Nino
; Kelvin wave
; latent heat flux
; Madden-Julian oscillation
; parameterization
; radiation budget
; wind power
; wind stress
; New Guinea
; Pacific Ocean
英文摘要: 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 (W MJO , 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 W MJO , 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. © 2017, Springer-Verlag GmbH Germany, part of Springer Nature. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/109073
Appears in Collections: 影响、适应和脆弱性 气候变化事实与影响
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作者单位: Department of Atmospheric, Oceanic, and Earth Science, George Mason University, 4400 University Drive, Fairfax, VA 22030, United States; Center for Ocean-Land-Atmosphere Studies, Fairfax, VA 22030, United States
Recommended Citation:
Lybarger N.D.,Stan C.. The effect of the MJO on the energetics of El Niño[J]. Climate Dynamics,2018-01-01,51(2018-07-08)