| DOI: | 10.1175/2011JCLI4092.1
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| Scopus记录号: | 2-s2.0-84863034388
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| 论文题名: | Seasonality of the Pacific decadal oscillation |
| 作者: | Wang H.; Kumar A.; Wang W.; Xue Y.
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| 刊名: | Journal of Climate
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| ISSN: | 8948755
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| 出版年: | 2012
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| 卷: | 25, 期:1 | | 起始页码: | 25
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| 结束页码: | 38
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| 语种: | 英语
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| Scopus关键词: | Coupled models
; Mixed layer
; Pacific decadal oscillation
; Sea surface temperatures
; Seasonal variability
; Atmospheric temperature
; Climate change
; Climate models
; Oceanography
; Computer simulation
; air temperature
; atmospheric forcing
; data assimilation
; decadal variation
; mixed layer
; sea surface temperature
; seasonal variation
; seasonality
; weather forecasting
; Pacific Ocean
; Pacific Ocean (North)
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| 英文摘要: | The seasonality of the Pacific decadal oscillation (PDO) is examined using North Pacific sea surface temperature (SST) in observations and in a 480-yr simulation with the National Centers for Environmental Prediction (NCEP) Climate Forecast System (CFS) coupled model. The PDO, both in observations and in the CFS, shows similar seasonality, with increasing SST variance during spring and a maximum in late spring and early summer. The vertical structure of the ocean temperature anomaly associated with the PDO in the CFS displays a significant transition from a deep to a shallow structure during late spring, consistent with the seasonal variation of the mean ocean mixed layer depth (MLD). An analysis of atmospheric surface wind and SST anomalies from the CFS simulation indicates that there is a 1-month delay in the PDO-related SST response to the atmospheric wind forcing. The results based on the CFS simulation are generally consistent with observations, including both atmospheric data from the NCEP/Department of Energy (DOE) Global Reanalysis 2 (GR-2) and ocean data from the NCEP Global Ocean Data Assimilation System (GODAS). The 1-month delay together with the seasonal variation of the mean MLD tends to amplify the PDO-related SST response to the atmospheric surface wind in late spring to early summer, and the combination leads to the maximum variability of the PDO, which is a 3-month delay from the peak phase of the surface wind in February and March. © 2012 American Meteorological Society. |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/52604
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| Appears in Collections: | 气候变化事实与影响
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作者单位: | NOAA/NWS/NCEP/Climate Prediction Center, Camp Springs, MD, United States; Wyle Information Systems, McLean, VA, United States
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| Recommended Citation: | |
Wang H.,Kumar A.,Wang W.,et al. Seasonality of the Pacific decadal oscillation[J]. Journal of Climate,2012-01-01,25(1)
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