Numerical modeling of upwelling filaments in the Gulf of Finland

Edith Soosaar, Urmas Raudsepp;
Marine System Institute at Tallinn University of Technology.

Coastal upwelling and upwelling filaments are common phenomenon in the Gulf of Finland. Observations show that locations of upwelling centers and filaments are repeatable. We use ROMS to reproduce coastal upwelling event that occurred in the Gulf of Finland at August 2006.

The model area is Gulf of Finland (from 21N to 30N and from 59E to 61E). Grid resolution is 1/20 degrees in the respect for longitude. In vertical direction there are 20 sigma coordinate layers. The model is forced by winds from Kalbadagrund weather station for time period from 25.07.2006 to 31.08.2007 (with three hour time resolution). The model results are validated against available sea surface temperature satellite pictures.