On The Significance Of The Atmospheric Deposition To The Eutrophication Of
The Baltic Sea
Author(s)
M. Hongisto
Abstract
On the significance of the atmospheric
deposition to the eutrophication of the Baltic
Sea
M. Hongisto
Finnish Meteorological Institute, Finland
Abstract
A 3D model based estimate of the atmospheric nutrient load (AL) to the Baltic
Sea (BS) is compared to othe, external and internal load sources. The
eutrophication state of the Baltic Sea, nutrient deposition and it's importance,
factors affecting to the time variability of the load and uncertainties in 3D
modelling are discussed.
1 Introduction
The Baltic Sea is a young, semi-closed brackish water basin with a relatively
small volume (around 22 000 km3) and a long (30-50 years) residence time for its
water. It is very shallow, being on average 55 m in depth. The Baltic Sea Basin
got its present form after the last Ice Age, when the sea level rose from -120 m of
the present level and the Atlantic connection opened around 8500-7000 years
ago. By comparison, the average depth of the Mediterranean is over 1.5 km, and
it's age is around 5 million
Keywords
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