| DOI: | 10.1002/2014GL061992
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| 论文题名: | Factors contributing to uncertainty in Pacific Decadal Oscillation index |
| 作者: | Wen C.; Kumar A.; Xue Y.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-9575
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| EISSN: | 1944-9306
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| 出版年: | 2014
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| 卷: | 41, 期:22 | | 起始页码: | 7980
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| 结束页码: | 7986
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| 语种: | 英语
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| 英文关键词: | PDO
; SST
; uncertainty
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| Scopus关键词: | Atmospheric temperature
; Orthogonal functions
; Sea ice
; Submarine geophysics
; Surface properties
; Surface waters
; Time measurement
; Empirical Orthogonal Function
; North-eastern Pacific
; Pacific decadal oscillation
; PDO
; Sea surface temperature (SST)
; Sources of uncertainty
; SST
; uncertainty
; Oceanography
; air-sea interaction
; climate variation
; data set
; monitoring
; Pacific Decadal Oscillation
; sea surface temperature
; timescale
; uncertainty analysis
; Pacific Ocean
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| 英文摘要: | Pacific Decadal Oscillation (PDO) index is an important indicator of climate variability. However, large discrepancies are found among real-time PDO monitoring indices maintained by several operational centers, with larger uncertainty exhibiting prior to 1950s and after late 1990s on seasonal to decadal time scales. Two historical sea surface temperature (SST) data sets are used to investigate causes for the uncertainty: the Extended Reconstructed Sea Surface Temperature version 3b (ERSST 3b) and the Hadley Center Sea Ice and SST data set (HadISST) version 1. It is found that choices of spatial structure of Empirical Orthogonal Function (EOF) vector and SST data set are important sources of uncertainty on seasonal to decadal time scales, while choice of climatological base period only contributes to uncertainty on seasonal time scale. Decadal variation of differences in PDO indices from ERSST and HadISST is associated with systematic differences between the two data sets in the central and the north-eastern Pacific. © 2014. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84923330719&doi=10.1002%2f2014GL061992&partnerID=40&md5=9161ed0a941bfe154290aab4ab938692
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| Citation statistics: |
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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/6839
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| Appears in Collections: | 气候减缓与适应
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作者单位: | NOAA/NWS/NCEP/Climate Prediction Center, College Park, United States
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| Recommended Citation: | |
Wen C.,Kumar A.,Xue Y.. Factors contributing to uncertainty in Pacific Decadal Oscillation index[J]. Geophysical Research Letters,2014-01-01,41(22).
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