The use of remote sensing to obtain quantitative and qualitative ocean data: A few examples

Ocean imagery obtained by satellite carried sensors in the visible, microwave and IR frequency bands contain synoptic data about the state of the ocean that is available in close to "real time" on a global scale. The information includes quantitative data about surface waves, temperatures, velocity, shear, chlorophyl content and bathymetry in shallow water. Here we will report on two examples of the use of remote sensing in ocean measurements: 1. The use of high resolution ocean images of swell to determine wavelength and direction of the dominant waves as well as to detect and measure surface currents and horizontal shears. 2. The use of infra red ocean imagery to determine water velocities and circulation patterns. Archived imagery of both types can be used for obtaining historic data on a global scale.