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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.

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Colne
Illustration

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

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Chelmer
Illustration

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

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Thames
Illustration

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

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

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Medway
Illustration

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

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

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Schelde
Illustration

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

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Haringvliet
Illustration

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

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Nieuwe Waterweg
Illustration

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

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

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Vrouwenzand
Illustration

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

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Ems
Illustration

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

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Weser
Illustration

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

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Elbe
Illustration

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

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Gotaaelv
Illustration

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

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Norrstrom
Illustration

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

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Dalaelven
Illustration

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

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Indalsaelven
Illustration

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

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Angermanaelven
Illustration

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

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Umeaelv
Illustration

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

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Skellefteaelv
Illustration

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

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Luleaelv
Illustration

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

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Kalixaelv
Illustration

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

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Kemijoki
Illustration

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

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Torneaelv
Illustration

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

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Oulujoki
Illustration

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

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Kokenmaenjoki
Illustration

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

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Kymijoki
Illustration

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

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Neva
Illustration

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

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Narva
Illustration

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

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Daugava
Illustration

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

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Nemun
Illustration

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

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Pregolia
Illustration

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

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Vistula
Illustration

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

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Odra
Illustration

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

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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)

RiversDischarge (m^3/s)Time Series
German Rivers  
Elbe716,21977 - 2012
Ems83,01977 - 2012
Weser327,31977 - 2012
Dutch Rivers  
Vrouwenzand569,01977 - 2012
Schelde134,11977 - 2012
Nordzeekanaal93,31977 - 2012
Nieuwe Waterweg143,31977 - 2012
Haringvliet746,51977 - 2012
Great Britain Rivers  
Chelmer4,31940 - 2016
Colne2,31940 - 2016
Gipping5,21940 - 2016
Great Stour8,51940 - 2016
Medway24,31940 - 2016
Stour at Harwich5,21940 - 2016
Thames110,11940 - 2016
Small German Rivers  
Accumersiel3,31997 - 2008
Arlau9,01993 - 2009
Bensersiel1,41997 - 2008
Bongsiel26,61993 - 2009
Dangast8,61988 - 1999
Darrigbuellkoog1,31993 - 2009
Deichsiel0,81993 - 2009
Eckwarden1,81988 - 1999
Eider55,41993 - 2009
Ems-Jade-Kanal2,11988 - 1999
Fedderwardersiel1,21988 - 1999
Harlesiel3,01997 - 2008
Hooksiel0,51988 - 1999
Jade Wapel5,71988 - 1999
Knock12,91997 - 2008
Leybuchtsiel11,51997 - 2008
Maade Siel3,41988 - 1999
Miele14,41993 - 2009
Mühlenau1,81993 - 2009
Neuharlingersiel2,31997 - 2008
Norderstrom1,31993 - 2009
Schweiburg0,61988 - 1999
Tetenbuell1,11993 - 2009
Treene23,41993 - 2009
Varel1,91988 - 1999
Wanger Siel5,91988 - 1999
Warwerort2,61993 - 2009
   
RiversDischarge (m^3/s)Time Series
Skellefteälv50,51970 - 2000
Luleälv140,51971 - 2000
Kalixälv83,81972 - 2000
Torneälv112,41973 - 2000
Kemijoki155,41974 - 2000
Oulujoki72,71975 - 2000
Kokenmaenjoki68,71976 - 2000
Kymijoki85,01977 - 2000
Neva666,61978 - 2000
Narva107,71979 - 2000
Daugava184,71980 - 2000
Nemun49,51981 - 2000
Pregolia45,11982 - 2000
Vistula308,81983 - 2000
Odra151,31984 - 2000
Gotaälv185,71985 - 2000
Norrstrom (Mälaren)48,21986 - 2000
Dalälven95,61987 - 2000
Indalsalven126,01988 - 2000
Angermanalven148,61989 - 2000
Umeälv132,61990 - 2000