Asymmetric impact of Atlantic Multidecadal Oscillation on El Nino and La Nina characteristics
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- Asymmetric impact of Atlantic Multidecadal Oscillation on El Nino and La Nina characteristics
- Other Titles
- 대서양 장주기 순환이 엘니뇨-라니냐 비대칭 발달에 미치는 영향
- Sung, Mi-Kyung
- Atlantic Multidecadal Oscillation; ENSO
- Issue Date
- Sung, Mi-Kyung, et al. 2015. "Asymmetric impact of Atlantic Multidecadal Oscillation on El Nino and La Nina characteristics". GEOPHYSICAL RESEARCH LETTERS, 42(12): 4998-5004.
- The long-lasting cold surface conditions of North Atlantic, i.e., the negative phase of Atlantic Multidecadal Oscillation (AMO), can intensify the El Nino？Southern Oscillation through the enhanced air-sea coupling under the increased central-to-eastern tropical Pacific mean sea surface temperature. However, the impact of warmermean sea surface temperature (SST) is more efficient in the intensifying El Nino than La Nina, because of the nature of the exponential growth of atmospheric convection to SST change. Moreover, the farther eastward shift of the atmospheric convection during the negative AMO leads to the stronger El Nino due to the longer delayed negative feedback by oceanic waves. Therefore, the AMO mainly influences the El Nino intensity rather than La Nina intensity.
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