DOI: 10.1007/s00382-013-1721-0
Scopus记录号: 2-s2.0-84894323248
论文题名: Interannual and interdecadal variability of ocean temperature along the equatorial Pacific in conjunction with ENSO
作者: Kumar A. ; Hu Z.-Z.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2014
卷: 42, 期: 2017-05-06 起始页码: 1243
结束页码: 1258
语种: 英语
英文关键词: ENSO
; ENSO-Modoki
; Interannual and interdecadal variations
; Ocean temperature along the equatorial pacific
; Tilt mode
; Warm water volume mode
英文摘要: In this paper, the leading modes of ocean temperature anomalies (OTA) along the equatorial Pacific Ocean are analyzed and their connection with El Niño-Southern Oscillation (ENSO) and interdecadal variation is investigated. The first two leading modes of OTA are connected with the different phases of the canonical ENSO and display asymmetric features of ENSO evolution. The third leading mode depicts a tripole pattern with opposite variation of OTA above the thermocline in the central Pacific to that along the thermocline in the eastern and western Pacific. This mode is found to be associated with so-called ENSO-Modoki. Insignificant correlations of this mode with the first two leading modes suggest that ENSO-Modoki may be a mode that is independent to the canonical ENSO and also has longer time scales compared with the canonical ENSO. The fourth mode reflects a warming (cooling) tendency above (below) the thermocline since 2000. Both the first and second modes have a large contribution to the interdecadal change in thermocline during 1979-2012. Also, the analysis also documents that both ENSO and OTA shifted into higher frequency since 2000 compared with that during 1979-1999. Interestingly, the ENSO-Modoki related OTA mode does not have any trend or significant interdecadal shift during 1979-2012. In addition, it is shown that first four EOF modes seem robust before and after 1999/2000, suggesting that the interdecadal shift of the climate system in the tropical Pacific is mainly a frequency shift and the changes in spatial pattern are relatively small, although the mean states over two periods experienced some significant changes. © 2013 Springer-Verlag (outside the USA). 资助项目: NOAA, National Oceanic and Atmospheric Administration
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/54249
Appears in Collections: 过去全球变化的重建
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作者单位: Climate Prediction Center, NCEP/NWS/NOAA, 5830 University Research Court, College Park, MD, 20740, United States
Recommended Citation:
Kumar A.,Hu Z.-Z.. Interannual and interdecadal variability of ocean temperature along the equatorial Pacific in conjunction with ENSO[J]. Climate Dynamics,2014-01-01,42(2017-05-06)