Response of two atmospheric general circulation models to sea-surface temperature anomalies in the tropical East and West Pacific

摘要: A substantial anomalous warming of sea-surface temperatures (SSTs) in the tropical Pacific Ocean (an ‘El Nino’) can have profound effects on atmospheric mid-latitude long waves, leading to severe weather anomalies1–5. However, magnitude and position these anomalies seem vary considerably between winters which El Nino events are progress2,6,7. In order forecast with confidence future events, it is important understand physical reasons for differences. Motivated by this, we present several general circulation experiments model response SST East West Pacific. We found that extratropical a relatively small anomaly be stronger than qualitatively different from much larger anomaly. These suggest possible explanation difference during 1976–77 winter 1972–73 1982–83.