Tandem mission data consists of
QuikSCAT and SeaWinds collected when both were
operationing. SeaWinds on ADEOS-II and SeaWinds
on QuikSCAT are identical instruments and have
been carefully cross-calibrated. The orbit phasing
is such that they observe the same location at
different local-times of day, however.
The increased temporal coverage of the tandem
data set compared to a single instrument can be
exploited to improve the spatial and/or temporal
sampling in enhanced resolution imaging. For
improved termporal resolution the tandem mission
set is processed into 'all pass' images. For
improved temporal resolution in the polar regions,
daily local-time-of-day images have been
generated. However, separate ascending/descending
pass images are not available for tandem data.
Combining QuikSCAT, SeaWinds, and tandem images
enables up to 3 images per day in the polar regions.
Images are made both from "egg" backscatter measurements
and "slice" measurements.
Further information is available in the
Enhanced Resolution Image Users Notes.