Satellite assessment of particulate matter and phytoplankton variations in the Santa Barbara Channel and its surrounding waters: Role of surface waves. Freitas, F. H., Siegel, D. A., Maritorena, S., & Fields, E. Journal of Geophysical Research-Oceans, 122(1):355–371, January, 2017. ![Satellite assessment of particulate matter and phytoplankton variations in the Santa Barbara Channel and its surrounding waters: Role of surface waves [link]](https://bibbase.org/img/filetypes/link.svg "link")
Paper doi abstract bibtex Satellite observations of chlorophyll in coastal waters are often described in terms of changes in productivity in response to regional upwelling processes while optical backscattering coefficients are more often linked to episodic inputs of suspended sediments from storm runoff. Here we show that the surface gravity wave resuspension of sediments has a larger role in controlling backscatter than previously considered. Almost 18 years of SeaWiFS, MODIS, MERIS, and VIIRS satellite imagery of the Santa Barbara Channel, California and its surrounding waters spectrally merged with the Garver-Siegel-Maritorena bio-optical model were used to assess the controls on suspended particle distributions. Analysis revealed that chlorophyll blooms in the warmer portions of the domain occur in phase with SST minima, usually in early spring, while blooms in the cooler regions lag SST minima and occur simultaneously to the strongest equatorward winds every year, often in the summer. Tight coupling between the optical variables was seen in offshore areas, as expected for productive waters. However, values of backscatter near the coast were primarily modulated by surface waves. This relationship holds throughout all seasons and is stronger within the 100 m isobath, but often extends tens of kilometers offshore. This forcing of particle resuspension by surface waves is likely a feature ubiquitous in all coastal oceans characterized by fine sediments. The implication of surface wave processes determining suspended particle loads far beyond the surf zone has large consequences for the interpretation of satellite ocean color signals in coastal waters and potentially redefines the extent of the littoral zone.
@article{freitas_satellite_2017,
title = {Satellite assessment of particulate matter and phytoplankton variations in the {Santa} {Barbara} {Channel} and its surrounding waters: {Role} of surface waves},
volume = {122},
issn = {2169-9275},
shorttitle = {Satellite assessment of particulate matter and phytoplankton variations in the {Santa} {Barbara} {Channel} and its surrounding waters: {Role} of surface waves},
url = {://WOS:000394996400022},
doi = {10.1002/2016jc012152},
abstract = {Satellite observations of chlorophyll in coastal waters are often described in terms of changes in productivity in response to regional upwelling processes while optical backscattering coefficients are more often linked to episodic inputs of suspended sediments from storm runoff. Here we show that the surface gravity wave resuspension of sediments has a larger role in controlling backscatter than previously considered. Almost 18 years of SeaWiFS, MODIS, MERIS, and VIIRS satellite imagery of the Santa Barbara Channel, California and its surrounding waters spectrally merged with the Garver-Siegel-Maritorena bio-optical model were used to assess the controls on suspended particle distributions. Analysis revealed that chlorophyll blooms in the warmer portions of the domain occur in phase with SST minima, usually in early spring, while blooms in the cooler regions lag SST minima and occur simultaneously to the strongest equatorward winds every year, often in the summer. Tight coupling between the optical variables was seen in offshore areas, as expected for productive waters. However, values of backscatter near the coast were primarily modulated by surface waves. This relationship holds throughout all seasons and is stronger within the 100 m isobath, but often extends tens of kilometers offshore. This forcing of particle resuspension by surface waves is likely a feature ubiquitous in all coastal oceans characterized by fine sediments. The implication of surface wave processes determining suspended particle loads far beyond the surf zone has large consequences for the interpretation of satellite ocean color signals in coastal waters and potentially redefines the extent of the littoral zone.},
language = {English},
number = {1},
journal = {Journal of Geophysical Research-Oceans},
author = {Freitas, F. H. and Siegel, D. A. and Maritorena, S. and Fields, E.},
month = jan,
year = {2017},
keywords = {river, variability, climate, ocean color remote sensing, algorithm, continental-shelf, Oceanography, bio-optical variability, biooptical model, california current, GSM, inner-shelf, long-term trends in phytoplankton, ocean productivity, optical-properties, role of surface waves, sediment resuspension, wind and wave processes},
pages = {355--371}
}
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