Advective nitrate fluxes, sea surface chlorophyll concentrations and other physical metrics in the Santa Barbara Channel (2012-2019)

This data package includes 6 files: (1 & 2) In-situ nitrate
concentrations at the surface and mixed layer depth, and
collocated remotely-sensed and reanalysis quantities of satellite
sea surface temperature, 15-day cumulative wind stress, satellite
sea surface chlorophyll with a 5-day lag, index of offshore
position of the California Current, indices for along-channel and
across-channel distance, and index for day of the year. (3) An R
script for generating generalized additive models (GAMs) to
predict nitrate concentrations at the surface and at the mixed
layer depth using the collocated data in files 1 & 2. (4)
Daily maps of satellite sea surface chlorophyll concentrations
(SSChl), High-frequency radar (HFR) surface currents, weather
research and forecasting (WRF) model wind-derived vertical
velocities, estimated nitrate concentrations at the surface and
mixed layer depth, horizontal advective nitrate fluxes at the
surface and vertical advective nitrate fluxes. (5) Daily time
series of spatial mean SSChl, principal component amplitude of the
first mode of variability in surface currents estimated using
complex empirical orthogonal function (EOF) analysis, alongshore
pressure gradient, wind stress, spatial mean horizontal velocities
at the western and eastern Santa Barbara Channel boundaries,
spatial mean vertical velocities, spatial mean surface nitrate
concentrations at the channel boundaries and across the entire
channel, spatial mean mixed layer depth nitrate concentrations
across the entire channel, spatial mean horizontal advective
nitrate fluxes at the channel boundaries, and spatial mean
vertical advective nitrate fluxes. (6) A MATLAB script for
plotting examples of the daily maps and time series in files 4
& 5. These data were processed in order to investigate the
impact of local nutrient delivery mechanisms on phytoplankton
blooms in the Santa Barbara Channel, California, details of which
are available in the study:

Brokaw, R.J., D.A. Siegel, L. Washburn, and C. Jones (2025).
Quantifying advective nutrient fluxes and their impact on coastal
phytoplankton blooms on regional scales. [In preparation for
Journal of Geophysical Research: Oceans.]