Inherent optical properties and optical mass classification of the waters of the Strait of Georgia, British Columbia, Canada

Loos, Eduardo; Costa, Maycira

doi:10.1016/j.pocean.2010.09.004

Cited by 26 publications

(59 citation statements)

References 74 publications

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“…Sutton et al [18] demonstrated spatial variability in the suspended matter, in that northern waters are dominated by phytoplankton when compared to the central and southern regions; this is similarly observed with bio-optical data [16]. Biologically, this region exhibits typical temperate diatom-dominated spring blooms followed by weaker fall bloom events [19], where primary assemblages are Thalassiosira spp., Skeletonema costatum, and Chaetoceros spp.…”

Section: Study Areamentioning

confidence: 76%

“…High particulate inputs in the Salish Sea produce optically complex waters [16] with the highest light attenuation due to suspended matter occurring particularly in the spring and summer [16,17]. Sutton et al [18] demonstrated spatial variability in the suspended matter, in that northern waters are dominated by phytoplankton when compared to the central and southern regions; this is similarly observed with bio-optical data [16].…”

Section: Study Areamentioning

confidence: 84%

“…However, in the Salish Sea, high surface chla and terrestrial particulates [16,38,39] can contribute to the water-leaving reflectance at the NIR bands, especially during spring and summer conditions. For this reason, the spatially averaged aerosol property, ε(748, 869), was estimated from previous corrected images according to the SWIR method.…”

Section: Atmospheric Correction Approachmentioning

confidence: 99%

“…For this reason, the spatially averaged aerosol property, ε(748, 869), was estimated from previous corrected images according to the SWIR method. In the Salish Sea, the mean ε(748, 869) was derived from a region farther from the coastline and away from known areas of high scattering [16] to limit potential land adjacency and turbid water effects, respectively. Specifically, a 5 × 5 pixel-box centred at 49.404 • N/−123.965 • W was used to produce an average α and ε for input into the MUMM + SWIR method.…”

Section: Atmospheric Correction Approachmentioning

confidence: 99%

“…Ricker during the summer and fall of 2012. All chlorophyll samples (n = 192) were collected at the surface (≤3.0 m; this represents, on average, the first optical depth in this region [16]) using the continuous shipboard laboratory pump. Triplicate 1L samples were filtered using 0.7 µm Whatman GF/F glass fibre filters following the Ocean Optics protocols [51].…”

Section: In Situ Chlorophyll Datamentioning

confidence: 99%

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Evaluation of MODIS-Aqua Atmospheric Correction and Chlorophyll Products of Western North American Coastal Waters Based on 13 Years of Data

et al. 2017

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Abstract:There is an increasing need for satellite-derived accurate chlorophyll-a concentration (chla) products to improve fisheries management in coastal regions. However, the methods used to derive these products have to be evaluated, so the associated uncertainties are known. The performance of three atmospheric correction methods, the near infrared (NIR), the shortwave infrared (SWIR), and the Management Unit of the North Seas Mathematical Models with an additional modification (MUMM + SWIR), and derived chla products based on the Moderate Resolution Imaging Spectroradiometer AQUA (MODIS) images acquired from 2002 to 2014 over the west coast of Canada and the United States were evaluated. The atmospherically corrected products and above-water reflectance were compared with in situ AERONET (N~650) and above-water reflectance (N~34) data, and the Ocean Color 3 MODIS (OC3M)-derived chla were compared with in situ chla measurements (N~82). The statistical analysis indicated that the MUMM + SWIR method was the most appropriate for this region, with relatively good retrievals of the atmospheric products, improved retrieval of remote sensing reflectance with bias lower than 20% for the OC3M bands, and improved retrievals of chla (r = 0.83, slope = 0.89, log RMSE = 0.33 mg m −3 for ±1 h). The poorest chla retrievals were achieved with the SWIR and NIR methods. These results represent the most comprehensive satellite data analysis of MODIS retrievals for this region and provide a framework for the MUMM + SWIR method that can be further tested in other coastal regions of the world.

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Section: Study Areamentioning

confidence: 76%

Section: Study Areamentioning

confidence: 84%

Section: Atmospheric Correction Approachmentioning

confidence: 99%

Section: Atmospheric Correction Approachmentioning

confidence: 99%

Section: In Situ Chlorophyll Datamentioning

confidence: 99%

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Evaluation of MODIS-Aqua Atmospheric Correction and Chlorophyll Products of Western North American Coastal Waters Based on 13 Years of Data

et al. 2017

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Impact of an extreme flood event on optical and biogeochemical properties in a subtropical coastal periurban embayment (Eastern Australia)

et al. 2014

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Major floods impacted the city of Brisbane, eastern Australia, in January 2011, delivering large amounts of dissolved and particulate materials and nutrients into the adjacent coastal embayment, Moreton Bay. The resulting spatially resolved changes in biogeochemical and optical properties in Moreton Bay were examined 1, 2, 6, 19, and 49 weeks after the main freshwater discharge. One week postflood, total suspended matter (TSM) and chlorophyll a (TChla) concentrations varied over 1 order of magnitude throughout Moreton Bay, the particle scattering coefficient at 555 nm varied by a factor of 20, and the total absorption coefficient and colored dissolved organic matter (CDOM) absorption coefficient at 440 nm varied by a factor of 5. The largest changes in biogeochemical and optical properties observed during our study were from 1 to 2 weeks after the floods: near the Brisbane River mouth, TSM decreased by a factor of 3, CDOM by a factor of 2, while TChla increased by a factor of 3. Within a year, optical and biogeochemical properties recovered to levels similar to nonflood conditions. The strong changes in the characteristics of the particulate and dissolved material following the flood event and subsequent biological and photochemical processes led to a large spatial and temporal variability in the relative contribution of different constituents to the total absorption coefficient at 440 nm, the particle single scattering albedo, and the specific inherent optical properties. This work has significant implications for the accuracy of standard ocean color remote sensing algorithms in coastal waters during flood events.

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Colored Dissolved Organic Matter in Frontal Zones

Guéguen

Kowalczuk

2013

The Handbook of Environmental Chemistry

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Inherent optical properties and optical mass classification of the waters of the Strait of Georgia, British Columbia, Canada

Cited by 26 publications

References 74 publications

Evaluation of MODIS-Aqua Atmospheric Correction and Chlorophyll Products of Western North American Coastal Waters Based on 13 Years of Data

Evaluation of MODIS-Aqua Atmospheric Correction and Chlorophyll Products of Western North American Coastal Waters Based on 13 Years of Data

Impact of an extreme flood event on optical and biogeochemical properties in a subtropical coastal periurban embayment (Eastern Australia)

Colored Dissolved Organic Matter in Frontal Zones

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