엘니뇨/라니냐 정의에 대한 제언 KCI

Title
엘니뇨/라니냐 정의에 대한 제언
Alternative Title
A Suggestion for Definition of El Niño/La Niña
Author(s)
손혜영; 국종성; 예상욱; 김현경; 박이형
Publication Year
2013-03
Abstract
KMA is operationally monitoring El Niño and La Niña events, which have tremendous impacts on global climate. Many scientific studies have used to define onset of El Niño and La Niña events based on the moving average and persistency of SST indices, and KMA has adopted such definition. Though the definition has been widely accepted, in the operational aspect there is a critical problem to use moving average and condition for the persistence. Because the future values for the SST indices cannot be used in the operational monitoring, the onset timing in El Niño and La Niña can be significantly delayed. We suggest here an appropriate definition of El Niño and La Niña events in the operational aspect. Instead of using the moving average and the condition for the persistence, the onset is defined based on NINO3.4 SST during last 3 months. In order to compare the new definition with the current KMA definition, we applied them to recent 60-years SST data. It is clear that the new definition can declare the onset timing of El Niño and La Niña several months earlier than that of the KMA definition. It suggest that the new definition is more appropriate to the operational monitoring on El Niño and La Niña.
ISSN
1598-3560
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/3253
Bibliographic Citation
대기, v.23, no.1, pp.63 - 71, 2013
Publisher
한국기상학회
Keywords
El Niño; La Niña; definition
Type
Article
Language
Korean
Publisher
한국기상학회
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