Skagerrak and Kattegat including fjords

Ammonium and ammonia concentration parameters in water bodies; Air pressure; Air temperature; Cloud cover height and extent; Particulate total and organic carbon concentrations in the water column; Chlorophyll pigment concentrations in water bodies; Dissolved oxygen parameters in the water column; Wind strength and direction; Particulate total and organic nitrogen concentrations in the water column; Nitrate concentration parameters in the water column; Phytoplankton taxonomic abundance in water bodies; Phosphate concentration parameters in the water column; Salinity of the water column; Dissolved total and organic nitrogen concentrations in the water column; Dissolved total or organic phosphorus concentration in the water column; Phytoplankton taxonomic volume in water bodies; Nitrite concentration parameters in the water column; Silicate concentration parameters in the water column; Temperature of the water column

In January 2001 the Swedish Meteorological and Hydrological Institute realized that the high water flow in the river Gota Alv, the entrance to Gothenburg, during autumn year 2000 and expected high flow in spring year 2001 may exert an influence on the sea, i.e. the Kattegat and the Skagerrak. SMHI, The Swedish Environmental Protection Agency (Naturvardsverket) and the Water Quality Association of the Bohus Coast (Bohuskustens Vattenvardsforbund) co-funded an investigation of possible effects in the area relatively close to the river mouth. The investigation started in February and ended in the beginning of June. The analysis comprises nutrients, chlorophyll a, quantitative phytoplankton, solar radiation and primary productivity. Data on nutrient concentrations in rivers was made available from the Swedish University of Agricultural Sciences (Sveriges lantbruksuniversitet).

Karlsson, B. & Andersson, L (2003) The Chatonella-bloom in year 2001 and effects of high freshwater input from river Gota Alv to the Kattegat-Skagerrak area., SMHI 2003. RO-32.

Swedish Meteorological and Hydrological Institute
Folkborgsvagen 1
Norrkoping

SE-601 76
Sweden