Evaluation of two band reflectance ratios for predicting concentrations of Chlorophyl-A in the river sava

Reflectance ratios are widely used in the water quality retrieval algorithms, but they are not universally applicable and have to be tuned to the local conditions. In this study we present optical characteristics of the River Sava and assess two band ratio model for the prediction of concentrations of Chl-a from the hyperspectral data. We found that the best correlation was with the NIR-blue band ratio. The results will enable further evaluation of data acquired from hyperspectral airborne and satellite sensors for monitoring water quality in the River Sava.

[1]  G. Destouni,et al.  Spatial distribution of unmonitored inland water discharges to the sea , 2007 .

[2]  Anatoly A. Gitelson,et al.  The peak near 700 nm on radiance spectra of algae and water: relationships of its magnitude and position with chlorophyll concentration , 1992 .

[3]  S. Hamilton,et al.  Sources and transport of carbon and nitrogen in the River Sava watershed, a major tributary of the River Danube , 2008 .

[4]  J. Pulliainen,et al.  Retrieval of water quality from airborne imaging spectrometry of various lake types in different seasons. , 2001, The Science of the total environment.

[5]  G. Destouni,et al.  Small unmonitored near‐coastal catchment areas yielding large mass loading to the sea , 2008 .

[6]  A. Gitelson,et al.  A simple semi-analytical model for remote estimation of chlorophyll-a in turbid waters: Validation , 2008 .

[7]  Michael Karydis,et al.  Eutrophication assessment of coastal waters based on indicators: a literature review. , 2009 .

[8]  Dong Jiang,et al.  Evaluation of Hyperspectral Indices for Chlorophyll-a Concentration Estimation in Tangxun Lake (Wuhan, China) , 2010, International journal of environmental research and public health.

[9]  S. Greenhalgh,et al.  Eutrophication: Sources and Drivers of Nutrient Pollution , 2009 .

[10]  H. Lenihan,et al.  Depletion, Degradation, and Recovery Potential of Estuaries and Coastal Seas , 2006, Science.

[11]  Kathleen Segerson,et al.  Clean Coastal Waters - Understanding and Reducing the Effects of Nutrient Pollution , 2000 .

[12]  Arnold G. Dekker,et al.  Detection of optical water quality parameters for eutrophic waters by high resolution remote sensing , 1993 .

[13]  Dimitra Kitsiou,et al.  Coastal marine eutrophication assessment: a review on data analysis. , 2011, Environment international.

[14]  Sylvain Ouillon,et al.  Above-water measurements of reflectance and chlorophyll-a algorithms in the Gulf of Lions, NW Mediterranean Sea. , 2005, Optics express.

[15]  A. Gitelson,et al.  Determination of chlorophyll a of inland waters on the basis of spectral reflectance , 1992 .

[16]  A. Drolc,et al.  Diffuse sources of nitrogen compounds in the Sava river basin, Slovenia , 2008 .

[17]  G. Likens,et al.  Technical Report: Human Alteration of the Global Nitrogen Cycle: Sources and Consequences , 1997 .

[18]  Handan Çamdevýren,et al.  Use of principal component scores in multiple linear regression models for prediction of Chlorophyll-a in reservoirs , 2005 .