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18. juli 20141Forfatternavn Discharges from rivers and land - what data can NIVA provide for operational models Arild Sundfjord14/15 Mai 2008 … and what.

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Presentation on theme: "18. juli 20141Forfatternavn Discharges from rivers and land - what data can NIVA provide for operational models Arild Sundfjord14/15 Mai 2008 … and what."— Presentation transcript:

1 18. juli 20141Forfatternavn Discharges from rivers and land - what data can NIVA provide for operational models Arild Sundfjord14/15 Mai 2008 … and what else is needed?

2 18. juli 20142Forfatternavn The RID project Arild Sundfjord14/15 Mai 2008 Riverine inputs and direct discharges to Norwegian coastal waters - Daily values of freshwater run-off and associated nutrient content - 10 of the largest rivers and 36 smaller rivers - covers ~ 50 % of the total catchment area

3 18. juli 20143Forfatternavn The RID project Arild Sundfjord14/15 Mai 2008 Co-operation project between NIVA, NVE and Bioforsk Water flux data (daily) from NVE – measured from rivers, modelled for other runoff Nutrients and other constituents from NIVA - at least monthly measurements for main rivers, four times/year for smaller)

4 18. juli 20144Forfatternavn Arild Sundfjord14/15 Mai 2008 The RID project Discharge areas

5 18. juli 20145Forfatternavn The RID project Arild Sundfjord14/15 Mai 2008 Parameters: pH Conductivity Suspended particulate matter Total Organic Carbon Total phosphorus Orthophosphate Total nitrogen Nitrate Ammonium (NH4) Silicate (SiO2) Lead (Pb) Cadmium (Cd) Copper (Cu) Zinc (Zn) Arsenic (As) Chromium (Cr) Nickel (Ni) Mercury (Hg) Lindane + various PCBs

6 18. juli 20146Forfatternavn The RID project – AquaMonitor web pages Arild Sundfjord14/15 Mai 2008 Data are processed and quality checked, then uploaded to password protected web site Financed by SFT, for OSPAR commitment Data until 2006 are available free of charge

7 18. juli 20147Forfatternavn The TEOTIL project Arild Sundfjord14/15 Mai 2008 Theoretical, coefficient based calculation of runoff and associated nutrient loads based on known source distribution. Covers entire Norwegian mainland – can be used to ”fill” the missing 50% of the area in RID.

8 18. juli 20148Forfatternavn Arild Sundfjord14/15 Mai 2008 The TEOTIL project

9 18. juli 20149Forfatternavn Arild Sundfjord14/15 Mai 2008 The TEOTIL project

10 18. juli Forfatternavn Arild Sundfjord14/15 Mai 2008 Summary - and questions - Discharges and nutrient loads are provided at 1 day resolution. Is this sufficient for operational modelling? Of hydrodynamics? Biology, e.g. algal blooms or oxygen deficiencies? Should other parameters be included? Is temporal and spatial resolution adequate? Reference Skarbøvik et al., Riverine inputs and direct direct discharges to Norwegian coastal waters OSPAR Commission. NIVA report , TA-2327/2007, 142 pages + appendices


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