DOI: 10.1007/s00382-012-1541-7
Scopus记录号: 2-s2.0-84888069160
论文题名: Understanding Madden-Julian-Induced sea surface temperature variations in the North Western Australian Basin
作者: Vialard J. ; Drushka K. ; Bellenger H. ; Lengaigne M. ; Pous S. ; Duvel J.P.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2013
卷: 41, 期: 2017-11-12 起始页码: 3203
结束页码: 3218
语种: 英语
英文关键词: Air-sea fluxes
; Air-sea interactions
; Intraseasonal variations
; Madden-Julian Oscillation
; Ocean mixed layer
英文摘要: The strongest large-scale intraseasonal (30-110 day) sea surface temperature (SST) variations in austral summer in the tropics are found in the eastern Indian Ocean between Australia and Indonesia (North-Western Australian Basin, or NWAB). TMI and Argo observations indicate that the temperature signal (std. ~0.4 °C) is most prominent within the top 20 m. This temperature signal appears as a standing oscillation with a 40-50 day timescale within the NWAB, associated with ~40 Wm-2 net heat fluxes (primarily shortwave and latent) and ~0.02 Nm-2 wind stress perturbations. This signal is largely related to the Madden-Julian Oscillation. A slab ocean model with climatological observed mixed-layer depth and an ocean general circulation model both accurately reproduce the observed intraseasonal SST oscillations in the NWAB. Both indicate that most of the intraseasonal SST variations in the NWAB in austral winter are related to surface heat flux forcing, and that intraseasonal SST variations are largest in austral summer because the mixed-layer is shallow (~20 m) and thus more responsive during that season. The general circulation model indicates that entrainment cooling plays little role in intraseasonal SST variations. The larger intraseasonal SST variations in the NWAB as compared to the widely-studied thermocline-ridge of the Indian Ocean region is explained by the larger convective and air-sea heat flux perturbations in the NWAB. © 2012 Springer-Verlag Berlin Heidelberg. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/54722
Appears in Collections: 过去全球变化的重建
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作者单位: Laboratoire d'Océanographie Expérimentation et Approches Numériques (LOCEAN), CNRS, UPMC, IRD, MNHN, Université Pierre et Marie Curie, Case 100, Place Jussieu, 75252 Paris Cedex 05, France; Laboratoire de Météorologie Dynamique, CNRS, Paris, France
Recommended Citation:
Vialard J.,Drushka K.,Bellenger H.,et al. Understanding Madden-Julian-Induced sea surface temperature variations in the North Western Australian Basin[J]. Climate Dynamics,2013-01-01,41(2017-11-12)