The combined use of optical remote sensing data and unattended flow‐through fluorometer measurements in the Baltic Sea
| Autor: | Jouni Pulliainen, Kari Kallio, E. Rantajärvi, Timo Pyhälahti, Jukka Seppälä, J. Vepsäläinen, Tapani Stipa, S. Pertola, M. Kiirikki |
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| Rok vydání: | 2005 |
| Předmět: | |
| Zdroj: | International Journal of Remote Sensing. 26:261-282 |
| ISSN: | 1366-5901 0143-1161 |
| Popis: | Global algorithms for chlorophyll‐a (chl‐a) concentration and primary productivity retrieval from satellite observations are often not applicable to areas that are turbid and rich in coloured dissolved organic matter (CDOM), such as the Baltic Sea. Such a turbid (Case 2) water area, with its unique optical properties, often requires a parametrization to local conditions. Water quality algorithms are also sensitive to other naturally occurring phenomena, such as temporal variations in the atmospheric properties. Therefore, adequate reference data are essential for the estimation of water quality algorithm accuracy. In this study, a comparison with Sea‐viewing Wide Field of view Sensor (SeaWiFS) data and high‐frequency flow‐through fluorometer measurements is made. These so‐called ‘ship of opportunity’ data are measured with an automated continuous sampling system onboard several merchant and passenger ships in the Baltic Sea (SOOP, the Alg@line‐system). The study is concentrated on the monitoring of spring... |
| Databáze: | OpenAIRE |
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