Should the Sea Surface Temperature Contours shown on the Fish Finding Map match exactly what I measure out at sea?
No. The goal of the Sea Surface Temperature (SST) Contours is to present the patterns of relative change. Although values on the SST Contours are the most accurate available, the objective is to show the changes over the entire area, not what the exact SST might be. Satellite-derived measurements of SST are affected by winds and atmospheric water-vapor content. Thus, they may not correspond with point measurements taken from the vessel. Without satellites, it is impossible to measure the SST for hundreds of kilometers around the vessel.
