Field testing two instruments for remotely sensing water quality in the Tennessee Valley

Dierberg, Forrest E.; Carriker, Neil E.

doi:10.1021/es00050a004

Cited by 29 publications

(23 citation statements)

References 16 publications

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“…The coefficients of determination for linear regression FLH algorithms range from 0.73 (Gitelson et al 1994) to 0.86 (Dierberg and Carriker 1994) for Chl-a concentrations not exceeding 79 mg m −3 in this instance. It is important to consider that the FLH algorithm is only suitable for use in relatively low-biomass waters (Chl-a concentrations generally not exceeding ∼30 mg m −3 ) as the backscattering peak near 700 nm overwhelms the fluorescence peak in high-biomass water.…”

Section: The Fluorescence/reflectance Line Height Algorithmmentioning

confidence: 80%

“…There are numerous recent examples where airborne sensors have been used successfully for the detection of various water-quality parameters in lakes (e.g. Dierberg and Carriker 1994, Hakvoort et al 2002, Floricioiu et al 2003, Hunter et al 2009. However, the difficulty in obtaining temporally and spatially consistent data as acquired from satellites, and the relatively high cost of campaigns, makes this approach generally unsuited to frequent monitoring applications, especially in the developing world.…”

Section: Remote-sensing Instruments and Their Application To Inland Amentioning

confidence: 99%

“…In particular, studies by Mittenzwey et al (1992), Gitelson et al (1993), Gons (1999) and more recently Moses et al (2009a) show that the correlation between Chl-a concentration and the ratio is very significant (r 2 > 0.8) for a variety of waters, including rivers, lakes, estuaries and in the laboratory, and over a wide range of concentrations from ∼0.1 to 350 mg m −3 . There are a large number of studies that use high spectral resolution airborne and in situ radiometric data (Dierberg and Carriker 1994, Jiao et al 2006, Duan et al 2007, Hunter et al 2008b, Hunter et al 2009) to estimate Chl-a using the ratio, and the r 2 values for these studies range from 0.75 (Duan et al 2007) to 0.99 (Menken et al 2006). The positioning of the MERIS bands at 665 and 709 nm makes MERIS ideally suited for predicting Chl-a using this ratio, and many studies have recently been carried out (Flink et al 2001, Ammenberg et al 2002, Härmä et al 2001, Gons et al 2002, Kallio et al 2003, Strömbeck et al 2004, Koponen et al 2007, Moses et al 2009b The causal explanation for the strength of the correlation of Chl-a with the 700/670 nm ratio is based on the interaction between backscattering from particulate matter (phytoplankton) and the strong absorption of water, which both increase towards the infrared (figure 1).…”

Section: R700/r670-based Colour-ratio Algorithmsmentioning

confidence: 99%

“…The fluorescence maximum near 685 nm has often been used to estimate Chl-a (Gower 1980, Gitelson et al 1994 peak at 685 nm from a linear baseline drawn between two points on either side of the peak (Dierberg andCarriker 1994, Giardino et al 2005). The coefficients of determination for linear regression FLH algorithms range from 0.73 (Gitelson et al 1994) to 0.86 (Dierberg and Carriker 1994) for Chl-a concentrations not exceeding 79 mg m −3 in this instance.…”

Section: The Fluorescence/reflectance Line Height Algorithmmentioning

confidence: 99%

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A current review of empirical procedures of remote sensing in inland and near-coastal transitional waters

Matthews

2011

International Journal of Remote Sensing

415

225

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The empirical approach of remote sensing has a proven capability to provide timely and accurate information on inland and near-coastal transitional waters. This article gives a thorough review of empirical algorithms for quantitatively estimating a variety of parameters from space-borne, airborne and in situ remote sensors in inland and transitional waters, including chlorophyll-a, total suspended solids, Secchi disk depth (z SD ), turbidity, absorption by coloured dissolved organic matter (a CDOM ) and other parameters, for example, phycocyanin. Current remote-sensing instruments are also reviewed. The theoretical basis of the empirical algorithms is given using fundamental bio-optical theory of the inherent optical properties (IOPs). Bands, band ratios and band arithmetic algorithms that could be used to produce common biogeophysical products for inland/transitional waters are identified. The article discusses the potential role that empirical algorithms could play alongside more advanced model-based algorithms in the future of water remote sensing, especially for near real-time operational monitoring systems. The article aims to describe the current status of empirical remote sensing in inland and near-coastal transitional waters and provide a useful reference to workers. It does not cover 'inversion' algorithms.

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Section: The Fluorescence/reflectance Line Height Algorithmmentioning

confidence: 80%

Section: Remote-sensing Instruments and Their Application To Inland Amentioning

confidence: 99%

Section: R700/r670-based Colour-ratio Algorithmsmentioning

confidence: 99%

Section: The Fluorescence/reflectance Line Height Algorithmmentioning

confidence: 99%

See 2 more Smart Citations

A current review of empirical procedures of remote sensing in inland and near-coastal transitional waters

Matthews

2011

International Journal of Remote Sensing

415

225

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“…Dierberg and Carriker (1994) used the remote sensing technique for investigating water quality in the Tennessee Valley, USA. Ver (1995) used spatial information from remote sensing for tasks of waterquality modeling.…”

Section: Computer-based Techniquesmentioning

confidence: 99%

Barriers to sustainable water-quality management

Huang

Xia

2001

Journal of Environmental Management

139

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Effect of hydrogen donor on the thermal degradation of poly(vinyl acetate) in solution

Madras¹,

Chattopadhyay²

2001

J of Applied Polymer Sci

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The thermal decomposition of poly(vinyl acetate) (PVAc) in solution was investigated both in the presence and absence of a hydrogen donor (H‐donor). Thermal degradation experiments at 220–250°C were conducted in a batch reactor by dissolving PVAc in diphenylether. The molecular weight distributions were measured as a function of reaction time. Experimental data indicated that the polymer degrades by random chain scission. The random scission degradation rate coefficient was between 9.01 × 10−4 and 6.12 × 10−3 min−1. The activation energy, determined from the temperature dependence of the rate coefficient, was 31.5 kcal/mol. The effect of an H‐donor, diphenylamine, was also investigated by varying the concentration from 0 to 0.472 mol/L. The data indicated that the presence of diphenylamine increases the PVAc degradation rate from 3.67 × 10−3 to 4.59 × 10−3 min−1 at 240°C. This is in contrast to the reduction in the degradation rate of polystyrene in the presence of diphenylamine. Continuous distribution models have been developed by treating molecular weight as a continuous variable. The experimentally observed variation of the degradation rates with H‐donor concentration is satisfactorily explained by a continuous distribution model based on the radical mechanism that involves the elementary reactions including the hydrogen abstraction steps. © 2001 John Wiley & Sons, Inc. J Appl Polym Sci 81: 1996–2000, 2001

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Field testing two instruments for remotely sensing water quality in the Tennessee Valley

Cited by 29 publications

References 16 publications

A current review of empirical procedures of remote sensing in inland and near-coastal transitional waters

A current review of empirical procedures of remote sensing in inland and near-coastal transitional waters

Barriers to sustainable water-quality management

Effect of hydrogen donor on the thermal degradation of poly(vinyl acetate) in solution

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