On the impact of spiciness on El Nino
Abstract
We investigate the modulation of ENSO location and amplitude by spiciness anomalies in the tropical thermocline. First, Argo observations constrain the size of observed spiciness anomalies. Realistic perturbations are then used to investigate the impact on an intermediate El Nino model. This shows that spiciness anomalies can increase the thermocline feedback and thus enhance the Bjerknes feedback and ENSO amplitudes. Experiments with coupled general circulation model are analyzed to investigate the impact on the character of El Nino.
- Publication:
-
AGU Fall Meeting Abstracts
- Pub Date:
- December 2015
- Bibcode:
- 2015AGUFMOS53A2011S
- Keywords:
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- 3339 Ocean/atmosphere interactions;
- ATMOSPHERIC PROCESSES;
- 1620 Climate dynamics;
- GLOBAL CHANGE;
- 4215 Climate and interannual variability;
- OCEANOGRAPHY: GENERAL;
- 4227 Diurnal;
- seasonal;
- and annual cycles;
- OCEANOGRAPHY: GENERAL