Assessment of Climate Change for the Baltic Sea Basin by BACC Author Team

By BACC Author Team

This booklet deals an updated evaluation of the most recent medical findings in local weather examine at the Baltic Sea Basin, together with weather alterations within the fresh earlier, weather projections up till 2100 utilizing the main subtle local weather types on hand, and an overview of weather switch affects on terrestrial, freshwater and marine ecosystems. The authors reveal that the neighborhood weather has already began to swap, and should proceed to take action - projections exhibit that the quarter turns into significantly hotter and wetter in a few components, yet dryer in others. Terrestrial and aquatic ecosystems have already proven changes to elevated temperatures, and are anticipated to stand extra adjustments within the close to future.

The BACC writer staff includes greater than eighty scientists from thirteen international locations masking numerous disciplines with regards to weather learn and comparable affects. BACC is a venture in the BALTEX (Baltic Sea scan) Programme and a contribution to the realm weather learn Programme. Lead authors of the crew comprise Hans von Storch, Anders Omstedt, Raino Heino, Heikki Tuomenvirta, Valery Vuglinsky, Bo Gustafsson, L. Phil Graham, Benjamin Smith, Joachim W. Dippner and Ilppo Vuorinen.

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The Baltic Sea ecosystem is also a transition area between sub-Arctic conditions in the Bothnian Bay to a boreal environment in the central and southern parts of the Baltic Sea. Some of the marine species are Arctic in origin, such as the bivalves Astarte borealis and Macoma calcarea. They are found in the central and southern half of the Baltic Sea, in the Belt Sea and Kattegat but only sporadically on the Norwegian coasts. In addition to the impoverished fauna of the Arctic and the North Sea, there is a special group of animals in the Baltic Sea, the glacial relicts (Segerstråle 1966).

The most important processes in terms of the overall control of the ecosystem are the physiological processes underlying net primary production, photosynthesis, respiration, stomatal regulation and carbon allocation in plants. 2. 5 Marine Ecological Characteristics The Baltic Sea is a large transition area between limnic and marine conditions. Plants and animals are a mix of marine and limnic species together with some genuinely brackish water forms (the Baltic Sea lacks endemics at species level, due to its geological youth).

E. a decrease in the southwestern regions and an increase in the north-eastern regions. During the 20th century, the Baltic Sea mean salinity decreased during the 1980s and 1990s, but similar decreases had also appeared earlier in the century. No long-term trend was found for the 20th century. There are indications of a sea level rise in the 20th century compared to the 19th century. A climate warming can be detected from the time series of the maximum annual extent of sea ice and the length of the ice season in the Baltic Sea.

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