Ecosystem Modelling

Riverine Nutrient Inputs

Eutrophication in coastal waters basically reflects altered nutrient inputs. A realistic eutrophication-reconstruction requires therefore data about riverine inputs of nutrients. The here presented data basis for the North Sea and Baltic Sea is based on the integration and updating of long-term measurements of discharge data, macro-nutrients (N, P, Si) and carbon concentrations (DIC, DOC) of German, Dutch, Scandinavian and Baltic rivers.

Data sets from different sources were verified with regard to data consistency and quality. Temporal and spatial measurement gaps were extrapolated with statistical procedures and documented comprehensively, so that now a complete time series from 1977 to 2012 exists. This data basis is available as NETCDF-In component. Furthermore the governmental discharge correction factors were incorporated in a second NETCDF-In component so that discharge values at the river mouth (=data input for models), additionally to the taken measurement data at the last tide-free gauge, are available.

Hzg-karte
Gipping
Illustration

Weekly and averaged nitrogen and phosphorus concentrations. Details see River Report.

more
Colne
Illustration

Weekly and averaged nitrogen and phosphorus concentrations. Details see River Report.

more
Chelmer
Illustration

Weekly and averaged nitrogen and phosphorus concentrations. Details see River Report.

more
Thames
Illustration

Weekly and averaged nitrogen and phosphorus concentrations. Details see River Report.

more
Great Stour
Illustration

Weekly and averaged nitrogen and phosphorus concentrations. Details see River Report.

more
Medway
Illustration

Weekly and averaged nitrogen and phosphorus concentrations. Details see River Report.

more
Stour Harwich
Illustration

Weekly and averaged nitrogen and phosphorus concentrations. Details see River Report.

more
Schelde
Illustration

Weekly and averaged nitrogen and phosphorus concentrations. Details see River Report.

more
Haringvliet
Illustration

Weekly and averaged nitrogen and phosphorus concentrations. Details see River Report.

more
Nieuwe Waterweg
Illustration

Weekly and averaged nitrogen and phosphorus concentrations. Details see River Report.

more
Noordzeekanaal
Illustration

Weekly and averaged nitrogen and phosphorus concentrations. Details see River Report.

more
Vrouwenzand
Illustration

Weekly and averaged nitrogen and phosphorus concentrations. Details see River Report.

more
Ems
Illustration

Weekly and averaged nitrogen and phosphorus concentrations. Details see River Report.

more
Weser
Illustration

Weekly and averaged nitrogen and phosphorus concentrations. Details see River Report.

more
Elbe
Illustration

Weekly and averaged nitrogen and phosphorus concentrations. Details see River Report.

more
Gotaaelv
Illustration

Weekly and averaged nitrogen and phosphorus concentrations. Details see River Report.

more
Norrstrom
Illustration

Weekly and averaged nitrogen and phosphorus concentrations. Details see River Report.

more
Dalaelven
Illustration

Weekly and averaged nitrogen and phosphorus concentrations. Details see River Report.

more
Indalsaelven
Illustration

Weekly and averaged nitrogen and phosphorus concentrations. Details see River Report.

more
Angermanaelven
Illustration

Weekly and averaged nitrogen and phosphorus concentrations. Details see River Report.

more
Umeaelv
Illustration

Weekly and averaged nitrogen and phosphorus concentrations. Details see River Report.

more
Skellefteaelv
Illustration

Weekly and averaged nitrogen and phosphorus concentrations. Details see River Report.

more
Luleaelv
Illustration

Weekly and averaged nitrogen and phosphorus concentrations. Details see River Report.

more
Kalixaelv
Illustration

Weekly and averaged nitrogen and phosphorus concentrations. Details see River Report.

more
Kemijoki
Illustration

Weekly and averaged nitrogen and phosphorus concentrations. Details see River Report.

more
Torneaelv
Illustration

Weekly and averaged nitrogen and phosphorus concentrations. Details see River Report.

more
Oulujoki
Illustration

Weekly and averaged nitrogen and phosphorus concentrations. Details see River Report.

more
Kokenmaenjoki
Illustration

Weekly and averaged nitrogen and phosphorus concentrations. Details see River Report.

more
Kymijoki
Illustration

Weekly and averaged nitrogen and phosphorus concentrations. Details see River Report.

more
Neva
Illustration

Weekly and averaged nitrogen and phosphorus concentrations. Details see River Report.

more
Narva
Illustration

Weekly and averaged nitrogen and phosphorus concentrations. Details see River Report.

more
Daugava
Illustration

Weekly and averaged nitrogen and phosphorus concentrations. Details see River Report.

more
Nemun
Illustration

Weekly and averaged nitrogen and phosphorus concentrations. Details see River Report.

more
Pregolia
Illustration

Weekly and averaged nitrogen and phosphorus concentrations. Details see River Report.

more
Vistula
Illustration

Weekly and averaged nitrogen and phosphorus concentrations. Details see River Report.

more
Odra
Illustration

Weekly and averaged nitrogen and phosphorus concentrations. Details see River Report.

more
MOSSCO River data basis – Riverine Nutrient inputs / Focus: Large rivers entering the North Sea (9,7 MB)
Data Sources
MOSSCO River data basis

MOSSCO River data basis

Another essential aim of current work is the quantification and localization of nutrient retention processes as well as the changes of nutrient concentrations along river estuaries, so the area between measurement station and river mouth. Therefore time series of several measurement stations along the course of large rivers were integrated.

This quantification enables the assessment of actual nutrient inputs and is therefore of special importance for determining nutrient target values for the German North Sea within the Water Framework Directive (WRRL) and the Marine Strategy Framework Directive (MSRL).

Nutrient retention processes and additional nutrient tributaries entering in the ~80 km downstream are not taken into account in present evaluations which may result in inaccurate estimations about actual nutrient concentrations entering the sea.

Over- or underestimation of nutrient concentrations as model input may lead to misjudgment of nutrient boundary concentrations in the WRRL with consequences for the management of water catchment areas. To enable a specific evaluation, riverine inputs of numerous small German rivers were documented and analyzed.

MOSSCO River data basis – Riverine Nutrient inputs / Focus: Large rivers entering the North Sea (9,7 MB)

North Sea Rivers

Rivers
Discharge (m^3/s)
Time Series
German Rivers
Elbe
716,2
1977 - 2012
Ems
83,0
1977 - 2012
Weser
327,3
1977 - 2012
Dutch Rivers
Vrouwenzand
569,0
1977 - 2012
Schelde
134,1
1977 - 2012
Nordzeekanaal
93,3
1977 - 2012
Nieuwe Waterweg
143,3
1977 - 2012
Haringvliet
746,5
1977 - 2012
Great Britain Rivers
Chelmer
4,3
1940 - 2016
Colne
2,3
1940 - 2016
Gipping
5,2
1940 - 2016
Great Stour
8,5
1940 - 2016
Medway
24,3
1940 - 2016
Stour at Harwich
5,2
1940 - 2016
Thames
110,1
1940 - 2016
Small German Rivers
Accumersiel
3,3
1997 - 2008
Arlau
9,0
1993 - 2009
Bensersiel
1,4
1997 - 2008
Bongsiel
26,6
1993 - 2009
Dangast
8,6
1988 - 1999
Darrigbuellkoog
1,3
1993 - 2009
Deichsiel
0,8
1993 - 2009
Eckwarden
1,8
1988 - 1999
Eider
55,4
1993 - 2009
Ems-Jade-Kanal
2,1
1988 - 1999
Fedderwardersiel
1,2
1988 - 1999
Harlesiel
3,0
1997 - 2008
Hooksiel
0,5
1988 - 1999
Jade Wapel
5,7
1988 - 1999
Knock
12,9
1997 - 2008
Leybuchtsiel
11,5
1997 - 2008
Maade Siel
3,4
1988 - 1999
Miele
14,4
1993 - 2009
Mühlenau
1,8
1993 - 2009
Neuharlingersiel
2,3
1997 - 2008
Norderstrom
1,3
1993 - 2009
Schweiburg
0,6
1988 - 1999
Tetenbuell
1,1
1993 - 2009
Treene
23,4
1993 - 2009
Varel
1,9
1988 - 1999
Wanger Siel
5,9
1988 - 1999
Warwerort
2,6
1993 - 2009

Baltic Sea Rivers

Rivers
Discharge (m^3/s)
Time Series
Skellefteälv
50,5
1970 - 2000
Luleälv
140,5
1971 - 2000
Kalixälv
83,8
1972 - 2000
Torneälv
112,4
1973 - 2000
Kemijoki
155,4
1974 - 2000
Oulujoki
72,7
1975 - 2000
Kokenmaenjoki
68,7
1976 - 2000
Kymijoki
85,0
1977 - 2000
Neva
666,6
1978 - 2000
Narva
107,7
1979 - 2000
Daugava
184,7
1980 - 2000
Nemun
49,5
1981 - 2000
Pregolia
45,1
1982 - 2000
Vistula
308,8
1983 - 2000
Odra
151,3
1984 - 2000
Gotaälv
185,7
1985 - 2000
Norrstrom (Mälaren)
48,2
1986 - 2000
Dalälven
95,6
1987 - 2000
Indalsalven
126,0
1988 - 2000
Angermanalven
148,6
1989 - 2000
Umeälv
132,6
1990 - 2000