Item #7: Indices Sea Surface Temperature indices Bermuda-Labrador Sea Transport Index A. Fischer, CLIVAR/GODAE Ocean Synthesis Meeting 31 Aug - 1 Sep 2006, ECMWF, Reading, UK

SST in boxes

Perspective Biases in the seasonal cycle of some of the models (non-SST constrained) In the tropical Pacific interannual variability is stronger than these biases in WTIO the interannual variability on top of the syntheses’ own climatologies are very similar Interannual variability of SST in the tropical Indian Ocean (particularly SETIO) not captured by 2 of the syntheses are subsurface expressions of tropical interannual variability (currents, thermocline depth/heat content) in the Indian Ocean captured as well as SST in the SST-constrained syntheses?

Bermuda-Labrador Basin Transport Index Curry and McCartney, JPO 2001

Perspective Offsets in PEA tend to be the same between Labrador Sea and Bermuda - canceling out in the transport index (vertical integration details?) Some success in capturing the phasing of changes Amplitude variations