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Data.md
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......@@ -11,7 +11,7 @@ The model makes use of several types of external data. Data is used either to se
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# Water quality and temperature
Data on water quality is derived from [Rijkswaterstaat](https://waterinfo.rws.nl). From the category nutrients and eutrophication: all parameters are selected and from the category veldparameters-OW the concentration of Chl-a is selected. For the locations, all stations in Oosterschelde are selected and the stations Walcheren 2 on North Sea and Steenbergen and Oesterdam in Volkerak Zoommeer. For the water temperature, the measurements from Rijkswaterstaat for the location Marollegat is used.
Data on water quality is derived from [Rijkswaterstaat](https://waterinfo.rws.nl). From the category nutrients and eutrophication: all parameters are selected and from the category veldparameters-OW the concentration of Chl-a is selected. For the locations, all stations in Oosterschelde are selected and the stations Walcheren 2 in North Sea and Steenbergen and Oesterdam in Volkerak Zoommeer. For the water temperature, the measurements from Rijkswaterstaat for the location Marollegat is used.
![WQstations_28Comp](uploads/87b614de9cb20a31213260180c77eb04/WQstations_28Comp.png)
......@@ -40,10 +40,13 @@ Not all components are measured at all stations over the whole period. The nitro
Dissolved inorganic nitrogen (DIN) and particulate organic nitrogen (PON) are expressed in mmol-N m<sup>-3</sup> by dividing by the molecular weight of nitrogen (14 g mole-1) and multiplying by 1000 (l m<sup>-3</sup>).
Additionally, NIOZ measured nutrients (NO3 and particulate organic nitrogen) and chlorophyll-a at 8 locations ((NIOZ_1 to NIOZ_8)) in the Oosterschelde from 1995 to 2013. The data are combined with the data from Rijkswaterstaat. Finally, negative values for PON are set to 0 and for the stations in the Oosterschelde, the concentration of particulate organic nitrogen is set to a maximum of 30 mmol-N m<sup>-3</sup>.
The data are stored as R data file (*.rds) in the subdrirectory “./DataOS/WQData/”.
The concentrations of WALCRN2 and STEENBGN are used for the boundary concentrations at the North Sea and Krammersluizen, respectively (function “Boundary_NPZ()”). The data in the Oosterschelde is used to compare the model results with the observation with the visualisation app.
The concentrations of WALCRN2 and STEENBGN are used for the boundary concentrations at the North Sea and Krammersluizen, respectively (function “Boundary_NPZ()”). The data in the Oosterschelde is used to compare the model results with the observation with the visualization app.
![WQ_Data_WALCRN2](uploads/f6f66ef51b19fa70b185ea18f561af20/WQ_Data_WALCRN2.png)
*Overview of the data (Chla, DIN and PON) for the location WALCHRN2*
Water temperature
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# KNMI
Data on irradiation are derived from the [KNMI](https://www.knmi.nl/nederland-nu/klimatologie/daggegevens). Since the location Wilhelminadorp (323) has a gap in the data (January 6<sup>th</sup> 2014 to December 15<sup>st</sup> 2017 is missing), data from the location Westdorpe (319) is used. The variable Q in the raw datafile from KNMI contains data on Global radiation [J cm<sup>-2</sup>]. The irradiation is converted into units of W d<sup>-1</sup>. The data are stored as an R-data file in the directory "/DataOS/KNMI/"
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