WS (ERS-2)


blue arrow Instrument Overview


The Wind Scatterometer (WS) was an instrument on board the ERS-2 mission.

The WS instrument was designed to measure wind over the oceans by measuring changes in radar backscatter caused by the wind. It obtained information on wind speed and direction at the sea surface for incorporation into models, global statistics and climatological datasets. It operated by recording the change in radar reflectivity of the sea due to the perturbation of small ripples by the wind close to the surface. This was possible because the radar backscatter returned to the satellite was modified by wind-driven ripples on the ocean surface and, since the energy in these ripples increased with wind velocity, backscatter increased with wind velocity.

The ERS-2 mission was launched in 1995 and ended in September 2011.

blue arrow Cal/Val

The goal of WS (ERS-2) calibration and validation activities was to verify the accuracy and quality of data the instrument acquired. A Calibration / Validation plan, details of Calibration and Validation Activities are available

blue arrow Quality Control Reports

Quality Control is monitoring routinely the status of the spacecraft (payload and platform) and to check if the derived products meet the quality requirements along mission life-time. WS (ERS-2) Quality Control Reports are available regarding Products Availability, Cyclic Reports, ERS-2 Yaw Error Angle Monitoring - Weekly Reports, a Cyclone Archive and Telemetry Data