Documentation of a highly ENSO‐related sst region in the equatorial pacific: Research note
Documentation of a highly ENSO‐related sst region in the equatorial pacific: Research note
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DOI：
10.1080/07055900.1997.9649597
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发表时间：
1997-09
期刊：
影响因子：
1.2
通讯作者：
Anthony G. Bamston;M. Chelliah;Stanley B. Goldenberg
中科院分区：
文献类型：
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作者：
Anthony G. Bamston;M. Chelliah;Stanley B. Goldenberg
摘要本文提出了一个新的ENSO SST指数，它与ENSO现象有很强的相关性。热带太平洋中东部和东部的海温异常与ENSO密切相关。然而，当使用最近几十年的数据时，从赤道太平洋东半部中心附近向西到日期变更线附近的异常被认为是与ENSO相关最强的。这是关于（1）与其他海洋/大气ENSO相关异常的关联强度（同时和作为时间延迟的预测），以及（2）对远程全球气候异常的影响。在1980年代早期，当四个“尼诺”区域被开发出来时，这种观测的洞察力是缺乏的。尽管这一区域性偏好的动力学基础还有待建立，但研究人员、诊断专家和预报人员可将Nino 3和Nino 4之间的区域视为ENSO状态的一个合适的综合SST指数。
Abstract A new ENSO SST index is documented that is strongly correlated to the core ENSO phenomenon. The SST anomaly in much of the east‐central and eastern tropical Pacific is closely related to ENSO. However, the anomaly from approximately the centre of the eastern half of the equatorial Pacific westward to near the date line is suggested to be most strongly ENSO‐related when data spanning the most recent several decades are used. This is the case both with respect to (1) strength of association with other oceanic/atmospheric ENSO‐related anomalies (both simultaneously and as a time‐delayed predictand), and (2) impact on remote worldwide climate anomalies. This observational insight was lacking in the early 1980s when the four “Nino” regions were developed. While a firmer dynamical foundation for this regional preference still needs to be established, the region straddling Nino 3 and Nino 4 may be regarded as an appropriate general SST index of the ENSO state by researchers, diagnosticians and forecaste...