DOI: 10.1175/JCLI-D-17-0432.1
Scopus记录号: 2-s2.0-85048976574
论文题名: Impacts of different cumulus schemes on the pathways through which sst provides feedback to the Madden-Julian oscillation
作者: Fu J.-X. ; Wang W. ; Zhu Y. ; Ren H.-L. ; Jia X. ; Shinoda T.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2018
卷: 31, 期: 14 起始页码: 5559
结束页码: 5579
语种: 英语
英文关键词: Atmosphere-ocean interaction
; Convective parameterization
; Intraseasonal variability
; Numerical weather prediction/forecasting
Scopus关键词: Atmospheric thermodynamics
; Climate change
; Clouds
; Dynamics
; Weather forecasting
; Atmosphere-ocean interactions
; Convective parameterization
; Intraseasonal variability
; Madden-Julian oscillation
; Numerical weather prediction/forecasting
; Potential temperature
; Relative contribution
; Surface disturbances
; Oceanography
; air-sea interaction
; climate feedback
; convective system
; cumulus
; Madden-Julian oscillation
; parameterization
; seasonal variation
; weather forecasting
英文摘要: Six sets of hindcasts conducted with the NCEP GFS have been used to study the SST-feedback processes and assess the relative contributions of atmospheric internal dynamics and SST feedback on the October and November MJO events observed during theDYNAMOIOP (Oct- and Nov-MJO). The hindcasts are carried out with three variants of the Arakawa-Shubert cumulus scheme under TMI and climatological SST conditions. The positive intraseasonal SST anomaly along with its convergent Laplacian produces systematic surface disturbances, which include enhanced surface convergence, evaporation, and equivalent potential temperature no matter which cumulus scheme is used. Whether these surface disturbances can grow into a robust response of MJO convection depends on the characteristics of the cumulus schemes used. If the cumulus scheme is able to amplify the SST-initiated surface disturbances through a strong upward-downward feedback, the model is able to produce a robust MJO convection response to the underlying SST anomaly; otherwise, the model will not produce any significant SST feedback. A new method has been developed to quantify the ''potential'' and ''practical'' contributions of the atmospheric internal dynamics and SST feedback on the MJOs. The present results suggest that, potentially, the SST feedback could have larger contributions than the atmospheric internal dynamics. Practically, the contributions to the Oct- and Nov- MJO events are, respectively, dominated by atmospheric internal dynamics and SST feedback. Averaged over the entire period, the contributions from the atmospheric internal dynamics and SST feedback are about half and half. © 2018 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/111484
Appears in Collections: 气候减缓与适应
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作者单位: International Pacific Research Center, School of Ocean and Earth Science and Technology, University of Hawai'i at Manoa, Honolulu, HI, United States; Institute of Atmospheric Sciences, FuDan University, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai, China; Climate Prediction Center, NOAA/NWS/NCEP, College Park, MD, United States; Environmental Modeling Center, NOAA/NWS/NCEP, College Park, MD, United States; National Climate Center, China Meteorological Administration, Beijing, China; Texas A and M University-Corpus Christi, Corpus Christi, TX, United States
Recommended Citation:
Fu J.-X.,Wang W.,Zhu Y.,et al. Impacts of different cumulus schemes on the pathways through which sst provides feedback to the Madden-Julian oscillation[J]. Journal of Climate,2018-01-01,31(14)