Currently three types of observational data are assimilated into ROMS IAS:
- satellite derived blended SST products available from
NOAA PFEL and
the University of Colorado CCAR.
- satellite altimeter data available from
University of Colorado CCAR
- shipboard ADCP current data collected by Explorer of the Seas over the upper 1000m
Prior to running the data assimilaton and forecast system in real time, quality
controled observational data were assimilated into IAS ROMS during the period
March 2005 to Oct 2006. The data assimilation method used was the incremental
4-Dimensional Variational approach (IS4DVAR), and a 14 day assimilation window
was used. During the period Nov 2006 to present, near real time SST, SSH and
ADCP data (when available) were assimilated prior to each forecast.