Thiemann, S. and Kaufmann, H. (2002) Lake water quality monitoring using hyperspectral airborne data - a semiempirical multisensor and multitemporal approach for the Mecklenburg Lake District, Germany. Remote Sensing of Environment, 81 (2-3), pp. 228-237.
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This study presents an approach for the determination of the trophic parameters Secchi disk transparency and chlorophyll-a from hyperspectral airborne casi and HyMap data with multitemporal validity. Based on in situ water sampling and reflectance measurements, algorithms have been developed. For Secchi disk transparency, the area between a base line and the spectrum from 400 nm to 750 nm was calculated and correlated to the Secchi disk transparency measured in situ; chlorophyll-a concentration was quantified using the existing reflectance ratio at 705 nm and 678 nm, which showed a linear relationship to chlorophyll-a concentration from laboratory spectrophotometric measurements. The algorithms have been adapted to the spectral characteristics of the airborne sensors and applied to these data recorded in September 1997 and 1998, May and June 1999. The validation using independent in situ reference data showed mean standard errors of 1.2 to 1.3 m for Secchi disk transparency and of 10.2 to 10.9 µg/l chlorophyll-a.
|Title:||Lake water quality monitoring using hyperspectral airborne data - a semiempirical multisensor and multitemporal approach for the Mecklenburg Lake District, Germany|
|Journal or Publication Title:||Remote Sensing of Environment|
|In ISI Web of Science:||Yes|
|Page Range:||pp. 228-237|
|Keywords:||monitoring, water quality, airborne, chlorophyll|
|HGF - Research field:||Aeronautics, Space and Transport (old)|
|HGF - Program:||Space (old)|
|HGF - Program Themes:||W EO - Erdbeobachtung|
|DLR - Research area:||Space|
|DLR - Program:||W EO - Erdbeobachtung|
|DLR - Research theme (Project):||UNSPECIFIED|
|Institutes and Institutions:||Remote Sensing Technology Institute|
|Deposited By:||elib DLR-Beauftragter|
|Deposited On:||16 Sep 2005|
|Last Modified:||06 Jan 2010 21:01|
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