Simulation of two types of El Nio from different convective parameters SCIE SCOPUS KCI

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Title
Simulation of two types of El Nio from different convective parameters
Author(s)
Jang, Yeon-Soo; Kim, Daehyun; Kim, Young-Ho; Kim, Dong-Hoon; Watanabe, Masahiro; Jin, Fei-Fei; Kug, Jong-Seong
Publication Year
2013-02
Abstract
Many recent studies have reported the presence of two types of El Nio events in observation: Cold Tongue (CT) El Nio and Warm Pool (WP) El Nio. We investigate the sensitivity of a model simulating two types of El Nio by changing a convective triggering parameter (Tokioka parameter). When deep convections are highly suppressed with a large Tokioka parameter, the model is capable of simulating distinct two-types of El Nio. However, the model has a problem in simulating two-types of El Nio distinctively when the Tokioka parameter is small, because the location of the maximum precipitation anomaly related to the CT El Nio is significantly shifted westward, leading to an atmospheric response pattern similar to that of the WP El Nio. Our results suggest that the mean precipitation over the eastern equatorial Pacific and the resultant zonal distribution in atmospheric feedback associated with ENSO can be one of the crucial factors for simulating two-types of El Nio.
ISSN
1976-7633
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/3272
DOI
10.1007/s13143-013-0020-3
Bibliographic Citation
ASIA-PACIFIC JOURNAL OF ATMOSPHERIC SCIENCES, v.49, no.2, pp.193 - 199, 2013
Publisher
KOREAN METEOROLOGICAL SOC
Subject
WARM POOL; NINO; PACIFIC; EVENTS; ENSO
Keywords
El Nino; climate model; two types of El Nino; convective parameterization; eastern Pacific precipitation
Type
Article
Language
English
Document Type
Article
Publisher
KOREAN METEOROLOGICAL SOC
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