Details on Cross-Track Bias Correction (Version 2005): |
Mean cross-track bias correction coefficients were computed for each satellite using a full two years of data. In computing the bias coefficients a liberal land mask was applied to the data to remove any land influence and the data poleward of 60 degrees was eliminated. This was done to avoid the impact of sea ice as well as a latitudinal bias on one end of the scan as the sensor passed near the poles. It was decided to compute the cross-track bias values based on the antenna temperatures. The resulting cross-track bias correction coefficients for each of the SSM/I sensors (F11, F13, F14, and F15) is shown in the following plots.
