EnsodSstOce
ocean_driven_SST: SST anomalies caused by anomalous ocean circulation in the eastern equatorial Pacific
Computes the amount of cooling (warming) by anomalous ocean circulation needed to generate surface temperature anomalies (SSTA) of -1 (1) °C during La Nina (El Nino) events in the eastern equatorial Pacific (horizontal Niño3 average)
TropFlux 1979-2018 (main)
NHF: OAFlux-ISCCP 1984-2009, DEEP-C 1985-2016, ERA5 1940-2022, 20CRv3 1836-2015, NCEP2 1979-2023
SST: ERSSTv5 1854-2023, HadISST 1870-2023, COBE2 1850-2023, ERA5 1940-2022, 20CRv3 1836-2015, NCEP2 1979-2023
Niño3, Niño3.4
None
- seasonal cycle removed
- detrending (if applicable)
- smoothed with time running average
- spatial average
- detect December Niño3.4 SSTA < -0.75std (> 0.75std)
- seasonal cycle removed
- detrending (if applicable)
- smoothed with time running average
- spatial average
- dSSTnhf = NHFA summed from July to December
- dSSToce = dSST - dSSTnhf
- abs((model-ref)/ref)*100
monthly
% of error
- sea surface temperature (SST)
- net surface heat flux (NHF; sum of latent and sensible heat fluxes and longwave and shortwave radiations)
The first level shows the diagnostic used to compute the metric and highlight the difference between the model and the reference.
Figure 1: sea surface temperature anomalies (SSTA) caused by anomalous ocean circulation in the eastern equatorial Pacific (Niño3 averaged) during all La Niña (multiplied by -1) and El Niño for 1°C of warming (usually smaller than the reference). The black and blue markers show respectively the reference and the model. The metric derived is the absolute value of the relative difference: abs((model-ref)/ref)*100.
The second level shows the evolution of dSST, dSSTnhf and dSSToce from June to December.
Figure 2: temporal evolution of evolution of sea surface temperature anomalies (SSTA), i.e. dSST, SSTA changes by total heat flux anomalies (NHFA), i.e. dSSTnhf and SSTA changes by anomalous ocean circulation, i.e. dSSToce in the eastern equatorial Pacific (Niño3 averaged) during all La Niña (multiplied by -1) and El Niño for 1°C of warming. Usually SSTA develop too early due to too much warming by dSSToce. The black, blue and red curves show respectively dSST, dSSTnhf and dSSToce, dashed and solid lines show respectively the reference and the model.