The next step in our modelling work will be to increase horizontal and vertical
resolution. We also are going to run the ecosystem model (version 2) to study the impact of climate changes on the development of biogeochemical variables in the Baltic Sea. Set of CEMBS1 equations with the biochemical processes including parameter values. ∂Phyt∂t=−(u∂Phyt∂x+υ∂Phyt∂y)+∂∂x(Kx∂Phyt∂x)++∂∂y(Ky∂Phyt∂y)−(w+wz)∂Phyt∂z+∂∂z(Kz∂Phyt∂z)++PRP−RESP−MORP−GRZ∂Detr∂t=D−REMDD=∫0H[(1−pM)MORP+(1−pF)FEC+(1−pZ)(MORZ++PRED)]dz∂Nutr∂t=−(u∂Nutr∂x+υ∂Nutr∂y)−w∂Nutr∂z++∂∂x(Kx∂Nutr∂x)+∂∂y(Ky∂Nutr∂y)+∂∂z(Kz∂Nutr∂z)++gN[−(PRP−RESPlight)+RESPdark+pMMORP+pFFEC+pZ(MORZ+PRED)+EXCZ]where selleck compound u, v, w – the time-dependent velocities obtained from POPCICE, and wz – sinking velocity of phytoplankton, Kx, Ky, Kz – horizontal and vertical diffusion coefficient (see ECOOP WP 10.1.1). “
“The evolution of the Pomeranian Bay environment during the last 10 000 years is not well known. Previous studies have suggested that the basin was formed as a result of marine transgression into the hinterlands around 7200 cal BP (Kramarska 1998, Krzymińska & Przeździecki 2001, Broszinski et al. 2005). The study area of the Pomeranian Bay was land covered by numerous lakes in the
Early Holocene. At 20 m below sea level (b.s.l.) the maximum water level of the Ancylus Lake did not flood the terrestrial areas (Lemke et al. 1998). Kramarska (1998) reported the existence of a lagoon separated from the marine Littorina Sea Basin EX-527 by the barrier of the Odra Bank until ca 5500 cal BP (5100 ± 200 BP, calibrated by the authors). The global eustatic sea-level rise in the Atlantic period caused the inflow of marine water (Rosa 1963, Borówka
et al. 2005, Lampe 2005) that led to the Littorina transgression. The glacio-isostatic factor could have an important Nintedanib (BIBF 1120) influence on the formation of the southern Baltic coast (Mörner 1976, Rotnicki 2009). Rotnicki (2009) suggested that a hypothetical northward shift of the foreland bulge could have been partially responsible for the transgression and regression periods. The transgression produced an open marine bay that extended south-wards into the lower Odra River Valley. Some researchers (Rosa 1963, Borówka et al. 2005) have suggested that this event may have been dramatic. The rapid transgression may have been caused by the disruption and destruction of the sand bar between the Odra Bank and the east coast of the Pomeranian Bay during extremely severe storms (Borówka et al. 2005). However, marine conditions could have affected this area at ca 7000 BP (Kramarska 1998). Uścinowicz (2006) also described a rapid sea level rise in north-western Europe at ca 8500 to 6500 cal BP. Earlier geological studies of Pomeranian Bay were based on diatomological (Broszinski et al. 2005) and malacological (Krzymińska & Przeździecki 2001, Borówka et al. 2005) analyses of a few cores taken from the eastern part of the bay.