Symposium Water Quality and Ecological modelling

1. 3 November 2014
Introduction to PC-Lake within DELWAQ for Case Study Lake Tai-Hu, China
Annette Janssen (NIOO-KNAW) & Michel Jeuken (Deltares)

2. What is PCLake?
•Started as a model for Phosphorus and Carbon in the foodweb of Lake Loosdrecht (an eutrophic shallow lake) by Jan Janse et al. (RIVM) in the 80’s
•Generalised to PCLake in the 90’s
•Was programmed in ACSL
•N.B.: It does contain nitrogen, too..

3. How did PCLake and up in DELWAQ?
1990’s: Two dutch 1D (water quality) models:
STOWA – DUFLOW Delft Hydraulics - SOBEK
DELWAQ = WQ core of SOBEK
Water quality DUPROL language Proces Library (PLCT)
processes Standard processes OpenPLCT
PCLake
In ACSL
2010’s: Merge between DUFLOW and SOBEK Standard processes made available in SOBEK and DELWAQ
Translator
Parser
DUPROL

4. DUPROL Parser
PARSER:
•Sub-file
•Proc_def
•FORTRAN code All you need for an OpenPLCT! OpenPLCT manual Parser code in open source: svn.oss.deltares.nl/repos/delft3d/trunk Look in: src/tools_gpl/duprol2delwaq
/* MODEL WATERTEMPERATUUR STROMENDE EN STAGNANTE WATERSYSTEMEN */ /* TEMP1 (VOLLEDIGE WARTMTEBALANS) */ /* STOWA project uitbreiding procesbeschrijvingen DUFLOW */ /* */ /* Landbouwuniversiteit Wageningen */ /* Vakgroep Waterkwaliteitsbeheer en Aquatische Oecologie */ /* Postbus 8080 */ /* 6700 DD Wageningen */ WATER TW [20.0] oC ;Watertemperatuur PARM RFS [0.10] - ;Reflexie korte golf straling PARM RFA [0.03] - ;Reflexie lange golfstraling XT FS [ 0.0] W/m2 ;Korte golf straling XT TA [20.0] oC ;Luchttemperatuur XT RV [ 8.0] % ;Relatieve vochtigheid XT Zon [100.] % ;Percentage zonneschijnduur XT W [ 2.0] m/s ;Windsnelheid XT P [1020] mbar ;Luchtdruk FLOW Z [1.0] m ;Waterdiepte { ES=1.33*0.75*exp(54.721-(6788.6/(TA+273.15))-5.0016*ln(TA+273.15)); EA=RV*ES*0.01; bw=(100-Zon)/100; EPSA=(0.53+0.067*EA^0.5)*(1+0.17*bw*bw); SIGMA=0.0000000567; RHO=1000; Cp=4200; FSnet=(1-RFS)*FS; FA=epsa*sigma*(TA+273.15)^4; FAnet=(1-RFA)*FA; FW=0.97*SIGMA*(TW+273.15)^4; K=4.4+1.82*W; FL=K*(ES-EA); FC=0.000619*P*(TW-TA)*FL/(ES-EA); FSOM=FSnet+FAnet-FW-FL-FC; k0(TW)=86400*FSOM/(rho*Cp*Z); }

5. Model translation taken one step further
Water quality DUPROL language Proces Library (PLCT)
processes Standard processes OpenPLCT
PCLake
In ACSL
DOI: 10.1016/j.envsoft.2014.04.004
Translator
Parser
DUPROL
Osiris
Other environments
Database Approach To Modelling

6. And now…
… Annette Janssen on PCLake within DELWAQ in Delft3D 4 A case study of Lake Tai-Hu, China