HR: 14:10h
AN: OS53A-02 INVITED     [Abstracts]
TI: The GoMOOS Nowcast/Forecast System
AU: * Xue, H
EM: hxue@maine.edu
AF: University of Maine, School of Marine Sciences 206 Libby Hall, Orono, ME 04469-5741 United States
AU: Shi, L
EM: leishi@maine.edu
AF: University of Maine, School of Marine Sciences 206 Libby Hall, Orono, ME 04469-5741 United States
AU: Cousins, S
EM: cousins@limpet.umeoce.maine.edu
AF: University of Maine, School of Marine Sciences 206 Libby Hall, Orono, ME 04469-5741 United States
AB: A circulation nowcast/forecast system was developed for the Gulf of Maine as an integral component of the Gulf of Maine Ocean Observing System (GoMOOS) technical program. The system has been used daily to produce short-term forecasts of the circulation and physical properties in the Gulf of Maine. One of the expectations is that the system can provide consistent SST to fill in AVHRR gaps and eventually produce reliable 3D temperature and flow fields for fishery applications. We first present the framework of the nowcast/forecast system, which includes an algorithm to assimilate satellite derived SST. Comparisons between the modeled and the observed temperature and velocity (both in situ and satellite derived) are discussed. In general, the assimilation algorithm is stable and produces SST patterns mimicking the AVHRR. Seasonal variations in temperature and the coastal current are well reproduced. Correlation between the modeled and observed fields in the synoptic band is summarized for individual buoys in monthly bins. Comparisons of spectral characteristics suggest that the system successfully captures the wind-driven events, whereas it is less satisfactory in simulating high frequency variability in summer.
DE: 4223 Descriptive and regional oceanography
DE: 4227 Diurnal, seasonal, and annual cycles
DE: 4255 Numerical modeling
DE: 4263 Ocean prediction
DE: 4512 Currents
SC: Ocean Sciences [OS]
MN: 2004 AGU Fall Meeting