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- Title
A Theory of the Spring Persistence Barrier on ENSO. Part II: Persistence Barriers in SST and Ocean Heat Content.
- Authors
Jin, Yishuai; Liu, Zhengyu
- Abstract
In this paper, we investigate the potential factors that control the relationship between the El Niño–Southern Oscillation (ENSO) persistence barriers (PBs) in sea surface temperature (SST) and ocean heat content (OHC) and apply them to explain observational ENSO PBs. With the addition of seasonal growth rate in SST in the neutral recharge oscillator (NRO) model, approximate analytical solutions of autocorrelation functions for SST and OHC suggest strictly that the timing of PB for OHC leads that of SST by half a year and the strengths of the two PBs are the same. The numerical solutions of the NRO model also show a similar relationship. The role of ENSO growth rate with regard to PBs in SST and OHC is then identified in the damped and unstable ENSO regime. Therefore, it is suggested that for the observational ENSO, the seasonally varying ENSO growth rate in SST controls PBs in SST and OHC simultaneously.
- Subjects
UNITED States. National Reconnaissance Office; ENTHALPY; EL Nino; OCEAN temperature; OCEAN; ANALYTICAL solutions
- Publication
Journal of Climate, 2021, Vol 34, Issue 13, p5555
- ISSN
0894-8755
- Publication type
Article
- DOI
10.1175/JCLI-D-20-0820.1