DOI: 10.1175/JCLI-D-14-00477.1
Scopus记录号: 2-s2.0-84921677500
论文题名: The MJO and air-sea interaction in TOGA COARE and DYNAMO
作者: de Szoeke S.P. ; Edson J.B. ; Marion J.R. ; Fairall C.W. ; Bariteau L.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2015
卷: 28, 期: 2 起始页码: 597
结束页码: 622
语种: 英语
Scopus关键词: Atmospheric temperature
; Atmospheric thermodynamics
; Budget control
; Climatology
; Evaporation
; Heat convection
; Heat flux
; Interactive devices
; Moisture
; Ships
; Surface measurement
; Surface waters
; Wind effects
; Air sea interactions
; Atmosphere-ocean interactions
; Coupled ocean-atmosphere response experiments
; Deep convective clouds
; Madden-Julian oscillation
; Outgoing longwave radiation
; Sea surface temperature (SST)
; Turbulent heat fluxes
; Oceanography
; air-sea interaction
; atmosphere-ocean coupling
; atmospheric dynamics
; evaporation
; longwave radiation
; Madden-Julian oscillation
; precipitation intensity
; research vessel
; shipborne measurement
; TOGA-COARE
; wind stress
; Indian Ocean
; Pacific Ocean
; Pacific Ocean (West)
英文摘要: Dynamics of the Madden-Julian Oscillation (DYNAMO) and Tropical Ocean and Global Atmosphere Coupled Ocean-Atmosphere Response Experiment (TOGA COARE) observations and reanalysis-based surface flux products are used to test theories of atmosphere-ocean interaction that explain the Madden-Julian oscillation (MJO). Negative intraseasonal outgoing longwave radiation, indicating deep convective clouds, is in phase with increased surface wind stress, decreased solar heating, and increased surface turbulent heat flux-mostly evaporation-from the ocean to the atmosphere. Net heat flux cools the upper ocean in the convective phase. Sea surface temperature (SST) warms during the suppressed phase, reaching a maximum before the onset of MJO convection. The timing of convection, surface flux, and SST is consistent from the central Indian Ocean (70°E) to the western Pacific Ocean (160°E). Mean surface evaporation observed in TOGA COARE andDYNAMO (110 Wm-2) accounts for about half of the moisture supply for the mean precipitation (210 Wm-2 for DYNAMO). Precipitation maxima are an order of magnitude larger than evaporation anomalies, requiring moisture convergence in the mean, and on intraseasonal and daily time scales. Column-integrated moisture increases 2 cm before the convectively active phase over the Research Vessel (R/V) Roger Revelle in DYNAMO, in accordance with MJO moisture recharge theory. Local surface evaporation does not significantly recharge the column water budget before convection. As suggested in moisture mode theories, evaporation increases the moist static energy of the column during convection. Rather than simply discharging moisture from the column, the strongest daily precipitation anomalies in the convectively active phase accompany the increasing column moisture. © 2015 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/50608
Appears in Collections: 气候变化事实与影响
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作者单位: College of Earth, Ocean, and Atmospheric Science, Oregon State University, Corvallis, OR, United States; University of Connecticut, Groton, CT, United States; Physical Sciences Division, NOAA/Earth System Research Laboratory, Boulder, CO, United States
Recommended Citation:
de Szoeke S.P.,Edson J.B.,Marion J.R.,et al. The MJO and air-sea interaction in TOGA COARE and DYNAMO[J]. Journal of Climate,2015-01-01,28(2)