Underway sampling of marine inherent optical properties on the Tara Oceans expedition as a novel resource for ocean color satellite data product validation

Werdell, P. Jeremy; Proctor, Christopher A.; Boss, Emmanuel; Leeuw, Thomas; Ouhssain, Mustapha

doi:10.1016/j.mio.2013.09.001

Cited by 32 publications

(29 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This might also be a reason why Manizza et al (2005) suggested improving their TR VIS model by including bio-optical parameterizations for each phytoplankton functional type (PFT). However, as demonstrated in Lee et al (2005) and here, the propagation of light depends on bulk optical properties, and such properties can be well estimated from radiometric measurements (Lee et al, 2005;Werdell et al, 2013) and there is no need to know a priori biological properties of the environment, such as the dominant PFT.…”

Section: Discussionmentioning

confidence: 94%

Estimation of Transmittance of Solar Radiation in the Visible Domain Based on Remote Sensing: Evaluation of Models Using In Situ Data

et al. 2017

View full text Add to dashboard Cite

The transmittance of solar radiation in the oceanic water column plays an important role in heat transfer and photosynthesis, with implications for the global carbon cycle, global circulation, and climate. Globally, the transmittance of solar radiation in the visible domain (∼400–700 nm) (TRVIS) through the water column, which determines the vertical distribution of visible light, has to be based on remote sensing products. There are models centered on chlorophyll‐a (Chl) concentration or Inherent Optical Properties (IOPs) as both can be derived from ocean color measurements. We present evaluations of both schemes with field data from clear oceanic and from coastal waters. Here five models were evaluated: (1) Morel and Antoine (1994) (MA94), (2) Ohlmann and Siegel (2000) (OS00), (3) Murtugudde et al. (2002) (MU02), (4) Manizza et al. (2005) (MA05), and (5) Lee et al. () (IOPs05), where the first four are Chl‐based and the last one is IOPs‐based, with all inputs derived from remote sensing reflectance. It is found that the best performing model is the IOPs05, with Unbiased Absolute Percent Difference (UAPD) ∼23%, while Chl‐based models show higher uncertainties (UAPD for MA94: ∼54%, OS00: ∼133%, MU02: ∼56%, and MA05: ∼39%). The IOPs‐based model was insensitive to the type of water, allowing it to be applied in most marine environments; whereas some of the Chl‐based models (MU02 and MA05) show much higher sensitivities in coastal turbid waters (higher Chl waters). These results highlight the applicablity of using IOPs products for such applications.

show abstract

Section: Discussionmentioning

confidence: 94%

Estimation of Transmittance of Solar Radiation in the Visible Domain Based on Remote Sensing: Evaluation of Models Using In Situ Data

et al. 2017

View full text Add to dashboard Cite

show abstract

“…Our HPLC measurements showed that the surface Chl‐a concentrations were very low with the range of 0.077–0.441 mg m −3 and a mean of 0.184 mg m −3 , indicating that there was no surface phytoplankton blooms detected during the cruise in July [ Xi et al ., ]. The highest values were observed at the depth of the chlorophyll maximum (DCM) located between 20 m and 75 m, always below the first optical depth (i.e., the layer over which light attenuates to ∼37% of its magnitude at the surface) [ Werdell et al ., ] that was 9.8 m on average. Stations in the north of the Bay (e.g., Sts.…”

Section: Resultsmentioning

confidence: 99%

Beam attenuation, scattering and backscattering of marine particles in relation to particle size distribution and composition in Hudson Bay (Canada)

Larouche

Michel

et al. 2015

JGR Oceans

View full text Add to dashboard Cite

This study investigated the relationships between the concentration of biogeochemical parameters and particulate beam attenuation (c p ), scattering (b p ), and backscattering (b bp ) in Hudson Bay. Results showed that most of the variability resulted from the presence of a deep chlorophyll maximum. c p , b p , and b bp were all adequate proxies to estimate total suspended matter (TSM) but were mostly sensitive to particulate inorganic matter (PIM) in the surface layer, and particulate organic matter (POM) at the chlorophyll maximum depth. The backscattering ratiob bp varied in the range of 0.005-0.05 and was inversely related to the POM : TSM ratio. According to the Twardowski et al. (2001) model, the PSD slope n well representedb bp and bulk refractive index n p in relation to particulate composition. For inorganic particulate dominated waters, bothb bp and n p had a larger range and a higher mean value than at organic particulate dominated waters. This knowledge on the optical properties related to the PSD and particulate composition provides valuable information for further investigation and broadens our understanding of ocean optics in high latitude waters leading to potential improvements of regional scale remote sensing algorithms.

show abstract

“…Alternatively, when stocks and abundances are required, regional relationships between a ph (λ) and C a could be developed for application to the GIOP-derived a ph (λ) following, for example, the approach presented in Werdell et al (2013c). A sufficient in situ data set exists from ICESCAPE such that regional statistical relationships between a ph (443) and C a can be developed (e.g., Bricaud et al, 1998;Werdell et al, 2013c). Our limited in situ data set yielded the following best fit relationship using Type II linear least squares regression: log 10 C a ð Þ¼1:564nlog 10 a ph 443…”

Section: Discussionmentioning

confidence: 99%

Assessment of ocean color data records from MODIS-Aqua in the western Arctic Ocean

Chaves

Werdell

Proctor

et al. 2015

Deep Sea Research Part II: Topical Studies in Oceanography

Self Cite

View full text Add to dashboard Cite

Underway sampling of marine inherent optical properties on the Tara Oceans expedition as a novel resource for ocean color satellite data product validation

Cited by 32 publications

References 28 publications

Estimation of Transmittance of Solar Radiation in the Visible Domain Based on Remote Sensing: Evaluation of Models Using In Situ Data

Estimation of Transmittance of Solar Radiation in the Visible Domain Based on Remote Sensing: Evaluation of Models Using In Situ Data

Beam attenuation, scattering and backscattering of marine particles in relation to particle size distribution and composition in Hudson Bay (Canada)

Assessment of ocean color data records from MODIS-Aqua in the western Arctic Ocean

Contact Info

Product

Resources

About