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<h2>Salish Model Ecosystem-Lower Trophic (SMELT), the biological component of SalishSeaCast</h2>
<p>
The 3 nutrient- 3 phytoplankton- 1.5 zooplankton compartment model described in
Moore-Maley et al . (2016) was adapted to three dimensions and coupled to the Salish
Sea NEMO model described by Soontiens et al. (2016). Description and evaluation of the
model can be found in:
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<p>
Olson, E. M., S. E. Allen, V. Do, M. Dunphy, and D. Ianson (in press).
Assessment of Nutrient Supply by a Tidal Jet in the Northern Strait of Georgia Based on a Biogeochemical Model.
J. Geophys. Res. Oceans.
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<p>
<a href="https://dx.doi.org/10.1029/2019JC015766">
https://dx.doi.org/10.1029/2019JC015766
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<h2>BibTeX Citations</h2>
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drift in the deep and intermediate waters in an operational version of this
model.",
doi = "10.1002/2015JC011118",
}
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<h3>
Olson, <em>et al</em>, 2020,
Assessment of Nutrient Supply by a Tidal Jet in the Northern Strait of Georgia Based on a Biogeochemical Model
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<pre>
@unpublished{Olson-etal-2020,
author = "Olson, E. M. and S. E. Allen and V. Do and M. Dunphy and D. Ianson",
title = "Assessment of Nutrient Supply by a Tidal Jet in the
Northern Strait of Georgia Based on a Biogeochemical Model",
journal = "Journal of Geophysical Research: Oceans",
year = "2020",
note = "(in press)",
url = "https://dx.doi.org/10.1029/2019JC015766",
keywords = "nitrate, tidal jet, Discovery Passage, Strait of Georgia,
biogeochemical model, new production",
abstract = "We present a coupled three-dimensional biological-physical model for
the Salish Sea and evaluate it by comparison to nitrate, silicate, and chlorophyll
observations. It accurately reproduces nitrate concentrations with Willmott skill
scores, root mean squared error, and bias ranging from 0.84–0.95, 4.02–6.5 μM,
and −2.33–1.84 μM, respectively, compared to three independent discrete sample
data sets. A prominent feature of the model output is a tidal jet emanating from
Discovery Passage producing a downstream plume of elevated surface nitrate.
The signal is present from April to September, when surface nitrate is otherwise
drawn down. It has a weak but statistically significant correlation to
Discovery Passage tidal velocity (R=0.37, p<0.01). Within the turbulent jet and
associated plume, the average rate of vertical nitrate supply due to mixing and
advection across a depth of roughly 6 m is 0.46 μmol m−2 s−1 between May 15, 2015,
and August 20, 2015, compared to 0.10 μmol m−2 s−1 for the northern Strait of Georgia
as a whole. Close to Discovery Passage, where velocities and shear are strongest,
the majority of the vertical nitrate flux is due to mixing. As velocities weaken
downstream, vertical advection becomes more important relative to mixing, but vertical
velocities also decrease. The tidal pulses out of Discovery Passage drive waves that
contribute net upward nitrate flux as far south as Cape Lazo, 40 km away. The nitrate
supply drives new production, consistent with existing observations. Similar dynamics
have been described in many other tidally influenced coastal systems.",
doi = "10.1029/2019JC015766",
}
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