Operational Coastal Water Quality Monitoring: Are Space Borne Products an Alternative to In-Situ Measurements - Where are we Now?

Details Operational Coastal Water Quality Monitoring: Are Space Borne Products an Alternative to In-Situ Measurements - Where are we Now? Operational Coastal Water Quality Monitoring: Are Space Borne Products an Alternative to In-Situ Measurements - Where are we Now?

May 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004esasp.549e..15b&link_type=abstract

Proceedings of MERIS User Workshop (ESA SP-549). 10-13 November 2003, ESA-ESRIN, Frascati, Italy. Editor: H. Lacoste. Published

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Water quality monitoring is an essential part of the monitoring programmes of the North Sea countries, required by international regulations such as the EU Water Framework Directive or the HELCOM Agreement. Because of budget constraints cost-effective alternatives to the very expensive ship cruises are urgently needed. The potential usage of water quality products from the space-borne instruments MERIS, MODIS and SeaWiFS is presently assessed in close collaboration with the monitoring agencies in the Netherlands and Germany in the framework of the EU project OROMA and the ESA GSE Coastwatch initiative. Standard products from these instruments are compared with in-situ data, taken by the monitoring agencies, and airborne measurements. Local inherent optical properties are available for the Dutch waters, which are used to improve the water quality products, and which results in a convincing comparison with in-situ data. This has been shown with SeaWiFS data on a statistical evaluation of a 2 year time series. MERIS products are compared on a case study basis because of the short period of data availability. However, the objective is also to prove the quality of the products on a sound statistical basis. The first reactions of the monitoring agencies is very positive.

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