Remote Sens. 2011, 3(2), 362-377; doi:10.3390/rs3020362
Article

Field Spectroscopy for Assisting Water Quality Monitoring and Assessment in Water Treatment Reservoirs Using Atmospheric Corrected Satellite Remotely Sensed Imagery

1 Remote Sensing Laboratory, Department of Civil Engineering and Geomatics, Faculty of Engineering and Technology, Cyprus University of Technology, P.O. Box 50329, Lemesos 3036, Cyprus 2 School of Civil Engineering & Environment, University of Southampton, Highfield, Southampton SO17 1BJ, UK
* Author to whom correspondence should be addressed.
Received: 31 December 2010; in revised form: 27 January 2011 / Accepted: 12 February 2011 / Published: 21 February 2011
PDF Full-text Download PDF Full-Text [618 KB, uploaded 21 February 2011 12:19 CET]
Abstract: The overall objective of this study was to use field spectro-radiometers for finding possible spectral regions in which chlorophyll-a (Chl-a) and particulate organic carbon (POC) could be identified so as to assist the assessment and monitoring of water quality using satellite remote sensing technology. This paper presents the methodology adopted in this study which is based on the application of linear regression analysis between the mean reflectance values (measured with the GER1500 field spectro-radiometer) across the spectrum and the concentrations of chlorophyll-a (µg/L) and POC (µg/L) acquired simultaneously on the same day and time in the Lower Thames Valley in West London (U.K.) from old campaigns. Each regression model (512 in total) corresponded to a measured wavelength of the GER1500 field spectro-radiometer. The achieved correlations presented as r2 against wavelength, indicate the regions with high correlation values for both water quality variables. Based on the results from this study and by matching the spectral bands of the field spectro-radiometer with those of the Landsat TM satellite sensor (or any other sensor), it has been found that suitable spectral regions for monitoring water quality in water treatment reservoirs are the following: for chlorophyll-a, the spectral region of 0.45–0.52 μm (TM band 1), and for POC, the region 0.52–0.60 μm (TM bands 1 and 2). Then 12 atmospheric corrected Landsat TM/ETM+ band 1 images acquired from 2001 to 2010 were used for validation purposes to retrieve the Chl-a concentrations.
Keywords: Chl-a; linear regression; POC; remote sensing; spectro-radiometric measurements

Article Statistics

Load and display the download statistics.

Citations to this Article

Cite This Article

MDPI and ACS Style

Hadjimitsis, D.G.; Clayton, C. Field Spectroscopy for Assisting Water Quality Monitoring and Assessment in Water Treatment Reservoirs Using Atmospheric Corrected Satellite Remotely Sensed Imagery. Remote Sens. 2011, 3, 362-377.

AMA Style

Hadjimitsis DG, Clayton C. Field Spectroscopy for Assisting Water Quality Monitoring and Assessment in Water Treatment Reservoirs Using Atmospheric Corrected Satellite Remotely Sensed Imagery. Remote Sensing. 2011; 3(2):362-377.

Chicago/Turabian Style

Hadjimitsis, Diofantos G.; Clayton, Chris. 2011. "Field Spectroscopy for Assisting Water Quality Monitoring and Assessment in Water Treatment Reservoirs Using Atmospheric Corrected Satellite Remotely Sensed Imagery." Remote Sens. 3, no. 2: 362-377.

Remote Sens. EISSN 2072-4292 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert