Indicator Fact Sheets 2003
The 2003 Indicator Reports are listed below, with a short description.
The Autumn 2002 – Spring 2003 saline inflows have had a posive effect on the oxygen conditions in the deep basins of the Southern and Eastern Baltic. In the Southern Baltic Proper, oxygen levels are close 1995, shortly after the last inflow. Hydrogen sulphide is still present in the East Gotland Basin, though in smaller amounts than in 2000 – 2002. The Western Baltic Proper is still badly affected by hydrogen sulphide.
The stagnation period which lasted since 1995 was terminated by the strong major Baltic inflow from January 2003.
In all sub-regions of the Baltic Sea, a strong seasonal, annual and decadal variability in the runoff can be distinguished. Especially wet and dry periods are characterising the runoff.
In all HELCOM Contracting Parties emissions are lower in 2001 than in 1991
No significant temporal pattern in nitrogen depositions to the Baltic Sea and its sub-basins can be detected.
The maps produced from SeaWiFS satellite images show the July-August mean concentration of chlorophyll-like pigments in the Baltic Sea.
Summer concentrations of chlorophyll-like pigments reveal clear regional differences but no trends in 1998-2002.
The spring bloom in 2003 was in all areas the most intense since 1992. However, no rising trend can be detected from 1992 to 2003
Wide spread cyanobacterial surface accumulations were observed in July-August in the northern Baltic Proper and in the Gulf of Finland.
Annual emissions of heavy metals from HELCOM countries have decreased during the period from 1990 to 2001.
Total annual atmospheric depositions of heavy metals to the Baltic Sea have substantially decreased in period 1990-2001.
Since 1993 the trace metal concentrations in Baltic Sea surface waters are still in the same order of magnitude.
The most significant source of artificial radioactivity in the Baltic Sea is the fallout from the Chernobyl accident.
In 2002, 344 deliberate illegal oil discharges from ships were observed within the Baltic Sea.
The following documents are not Indicator Reports but give information on harmful substances in herrings and sea surface temperature
PCB, DDT compounds and Hg have a clear dependence on the age in the female Baltic Herrings.
Sum parameters of presented seven PCBs and three DDTs have a decreasing trend as a result of banning the use of PCBs and DDT’s.
The assessment of the sea surface temperature of the Baltic Sea in 2002 was made on the basis of data of the NOAA weather satellites.