"Algorithms for remote estimation of chlorophyll-a in coastal and inland waters using red and near infrared bands" (2010 Abstract: Remote sensing algorithms that use red and NIR bands for the estimation of chlorophyll-a concentration [Chl] can be more effective in inland and coastal waters than algorithms that use blue and green bands. We tested such two-band and three-band red-NIR algorithms using comprehensive synthetic data sets of reflectance spectra and inherent optical properties related to various water parameters and a very consistent in situ data set from several lakes in Nebraska, USA. The two-band algorithms tested with MERIS bands were R rs (708)/R rs (665) and R rs (753)/R rs (665). The three-band algorithm with MERIS bands was in the form R3 = [R rs 1 (665)  R rs 1 (708)] × R rs (753). It is shown that the relationships of both R rs (708)/R rs (665) and R3 with [Chl] do not depend much on the absorption by CDOM and non-algal particles, or the backscattering properties of water constituents, and can be defined in terms of water absorption coefficients at the respective bands as well as the phytoplankton specific absorption coefficient at 665 nm. The relationship of the latter with [Chl] was established for [Chl] > 1 mg/m 3 and then further used to develop algorithms which showed a very good match with field data and should not require regional tuning. 6, 28-36 (1985). (2010) 1161-1166 (1979). 12. A. Vasilkov, and O. Kopelevich, -Reasons for the appearance of the maximum near 700 nm in the radiance spectrum emitted by the ocean layer,‖ Oceanology (Mosc.) 22, 697-701 (1982). 13. Published in Optics Express

Both treatment modalities provided comparable clinical results in the treatment of chronic periodontitis.

Based on HYDROLIGHT simulations of more than 2000 reflectance spectra from datasets typical of coastal waters with highly variable optically active constituents as well as on intercomparisons with field measurements, the magnitude of chlorophyll fluorescence was analyzed and parameterized as a function of phytoplankton, CDOM, and suspended inorganic matter concentrations. Using the parameterizations developed, we show that variations in the fluorescence component of water leaving radiance in coastal waters are due more to the variability of attenuation in the water than to the variability of the fluorescence quantum yield, which we estimate to be relatively stable at around 1%. Finally, the ranges of water conditions where fluorescence plays a significant role in the reflectance NIR peak and where it is effectively undetectable are also determined.

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