DOI: 10.1002/2015GL064220
论文题名: The relationship between thermocline depth and SST anomalies in the eastern equatorial Pacific: Seasonality and decadal variations
作者: Zhu J. ; Kumar A. ; Huang B.
刊名: Geophysical Research Letters
ISSN: 0094-9326
EISSN: 1944-9057
出版年: 2015
卷: 42, 期: 11 起始页码: 4507
结束页码: 4515
语种: 英语
英文关键词: decadal variation
; seasonality
; SST
; thermocline
Scopus关键词: Atmospheric pressure
; Atmospheric temperature
; Climatology
; Stream flow
; Surface waters
; Temperature distribution
; Decadal variations
; Eastern equatorial Pacific
; Equatorial Pacific
; Sea surface temperature anomalies
; Seasonality
; Southern oscillation
; SST
; Thermocline depth
; Oceanography
英文摘要: Even though the vital role of thermocline fluctuation in El Niño-Southern Oscillation (ENSO) cycle has been established previously, the direct relationship between the thermocline depth and sea surface temperature (SST) anomalies in the equatorial Pacific is yet to be fully understood, especially its seasonality. Thermocline depth anomalies have been found to lead SST anomalies in time with a longitude-dependent delay, but our study also suggests that the relationship shows considerable seasonal dependency and is strongest (weakest) during the boreal spring (summer). Over the eastern equatorial Pacific where there is least delay (compared to that in the western and central Pacific), the connection between thermocline and SST is the weakest during the boreal spring. This feature may be one of causes for ENSO spring persistence barrier. Furthermore, the thermocline-SST connections exhibit significant decadal variations, which are remarkably consistent with the decadal changes in the persistence barrier of SST anomalies over the eastern Pacific. It is also found that the decadal shift in the timing of the thermocline-SST connection barrier is caused by the changes in the seasonal cycle of tropical trade winds and thermocline depths. ©2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84934312157&doi=10.1002%2f2015GL064220&partnerID=40&md5=f562c91ed68c7d050ee222e17a54649d
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8941
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Climate Prediction Center, NOAA/NWS/NCEP, College Park, MD, United States
Recommended Citation:
Zhu J.,Kumar A.,Huang B.. The relationship between thermocline depth and SST anomalies in the eastern equatorial Pacific: Seasonality and decadal variations[J]. Geophysical Research Letters,2015-01-01,42(11).