discharges from rivers and land
DESCRIPTION
Discharges from rivers and land. … and what else is needed?. what data can NIVA provide for operational models. Arild Sundfjord. 14/15 Mai 2008. The RID project. Riverine inputs and direct discharges to Norwegian coastal waters. - PowerPoint PPT PresentationTRANSCRIPT
April 20, 2023 1Forfatternavn
Discharges from rivers and land
- what data can NIVA provide for operational models
Arild Sundfjord 14/15 Mai 2008
… and what else is needed?
April 20, 2023 2Forfatternavn
The RID project
Arild Sundfjord 14/15 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
April 20, 2023 3Forfatternavn
The RID project
Arild Sundfjord 14/15 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)
April 20, 2023 4ForfatternavnArild Sundfjord 14/15 Mai 2008
The RID project
Discharge areas
April 20, 2023 5Forfatternavn
The RID project
Arild Sundfjord 14/15 Mai 2008
Parameters: pHConductivity Suspended particulate matterTotal Organic Carbon Total phosphorus OrthophosphateTotal nitrogen NitrateAmmonium (NH4) Silicate (SiO2) Lead (Pb)Cadmium (Cd) Copper (Cu)Zinc (Zn)Arsenic (As)Chromium (Cr) Nickel (Ni)Mercury (Hg) Lindane + various PCBs
April 20, 2023 6Forfatternavn
The RID project – AquaMonitor web pages
Arild Sundfjord 14/15 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
April 20, 2023 7Forfatternavn
The TEOTIL project
Arild Sundfjord 14/15 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.
April 20, 2023 8ForfatternavnArild Sundfjord 14/15 Mai 2008
The TEOTIL project
April 20, 2023 9ForfatternavnArild Sundfjord 14/15 Mai 2008
The TEOTIL project
April 20, 2023 10ForfatternavnArild Sundfjord 14/15 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., 2007. Riverine inputs and direct direct discharges to Norwegian coastal waters - 2006. OSPAR Commission. NIVA report 5511-2007, TA-2327/2007, 142 pages + appendices