○ Argo: pink circle at the location of any profile made in the window t0 +/- 12hrs.

→ Glider: A blue arrow shows the latest depth-average velocity estimated by the glider. A trail of arrow heads shows its path in the time-window listed in the key.

⇉ Radar: the average velocity using all available hourly radar velocities from the IMOS radar facility within a specified time window around t0. Eg (3-12h avg) indicates a minimum of 3 hourly radar velocity estimates are required within a 12 hour window. Shown red or blue to contrast with SST.

> Drifter: 6- or 12-hourly positions (see key) within a window of -4 or -2 to +1 day around t0. Location and velocity are indicated with pink arrow heads. These are drogued at 15m on deployment. A drifter that cuts across the geostrophic velocity more than usual may have lost its drogue.

○ Ship: Underway water temperature, plotted hourly, from research vessels (MNF and AIMS) with hull-mounted intake. Data within t0 +/- 1day is indicated with a small black dot at the ship location and a black circle indicates the measurement occurred within 12 hours of t0.

Adjusted Sea level (ASL=ASLA plus Mean Dynamic Topography): white contours every 0.1m.

Geostrophic velocity: black arrows indicate the path something would travel over a 12hr or 24hr period (as indicated) at this velocity. Derived from ASL.

The latest ASL (NRT00) map is usually dated 4 days behind real time, as indicated.