Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1175/JCLI-D-16-0786.1 |
Pairwise-Rotated EOFs of Global SST | |
Chen, Xianyao1,2; Wallace, John M.3; Tung, Ka-Kit4 | |
2017-07-01 | |
发表期刊 | JOURNAL OF CLIMATE |
ISSN | 0894-8755 |
EISSN | 1520-0442 |
出版年 | 2017 |
卷号 | 30期号:14 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; USA |
英文摘要 | Empirical orthogonal function (EOF) analysis of global sea surface temperature yields modes in which interannual variability associated with ENSO and the lower-frequency variability associated with the Pacific decadal oscillation (PDO) and the Atlantic multidecadal oscillation (AMO) are confounded with one another and with the signature of global warming. The confounded EOFs exhibit overlapping centers of action with polarities of the perturbations juxtaposed such that the respective modes are mutually orthogonal in the global domain. When physical modes with different time scales appear in the same pair of EOFs, the principal component (PC) time series tend to be positively correlated in one frequency band and negatively correlated in another. Mode mixing may be a reflection of sampling variability or it may reflect the lack of spatial orthogonality of the physical modes themselves. Using sequences of pairwise orthogonal rotations of selected PCs, it is possible, without recourse to filtering, to recover a global warming mode with a bland spatial pattern and a nearly linear upward trend, along with dynamical modes, each with its own characteristic time scale, that resemble ENSO, the PDO, and the AMO. Novel elements of this analysis include a rationale for choosing the optimal angle for pairwise rotation and a simple algorithm for eliminating mode mixing between the dynamical modes and the global warming mode by transferring the linear trends from the former to the latter. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000404018600018 |
WOS关键词 | SEA-SURFACE TEMPERATURES ; ATLANTIC MULTIDECADAL OSCILLATION ; EMPIRICAL ORTHOGONAL FUNCTIONS ; CLIMATE VARIABILITY ; DECADAL VARIABILITY ; SAMPLING ERRORS ; PACIFIC ; OCEAN ; ENSO ; MODES |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/19760 |
专题 | 气候变化 |
作者单位 | 1.Ocean Univ China, CIMST, Phys Oceanog Lab, Qingdao, Peoples R China; 2.Qingdao Natl Lab Marine Sci & Technol, Qingdao, Peoples R China; 3.Univ Washington, Dept Atmospher Sci, Seattle, WA 98195 USA; 4.Univ Washington, Dept Appl Math, Seattle, WA 98195 USA |
推荐引用方式 GB/T 7714 | Chen, Xianyao,Wallace, John M.,Tung, Ka-Kit. Pairwise-Rotated EOFs of Global SST[J]. JOURNAL OF CLIMATE,2017,30(14). |
APA | Chen, Xianyao,Wallace, John M.,&Tung, Ka-Kit.(2017).Pairwise-Rotated EOFs of Global SST.JOURNAL OF CLIMATE,30(14). |
MLA | Chen, Xianyao,et al."Pairwise-Rotated EOFs of Global SST".JOURNAL OF CLIMATE 30.14(2017). |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论