Hydrodynamic timeseries data from south San Francisco Bay, California, summer 2020

One platform was deployed in the channel, and it contained the following instruments: Nortek Signature1000 acoustic doppler current profiler, EofE Ultrasonics Altimeter, RBR CTD, Nortek single point acoustic doppler velocimeter with a Seapoint turbidity meter, Sequoia Scientific Laser In-situ scattering and transmissometry (LISST).

Three platforms were deployed in the shallows, and together contained the following instruments: RDInstrument ADCP, RBR DUO bursting pressure sensor, Nortek single point acoustic doppler velocimeter (no turbidity meter), Sequoia Scientific Laser In-situ scattering and transmissometry (LISST), RBR Virtuoso with Seapoint turbidity meter, EofE Ultrasonics Altimeter, RBR CTD.

Instruments were retrieved from both the channel and shallows sites. The data from the retrieved instruments were post-processed using manufacturers software packages and USGS matlab codes.

Data were accumulated into NetCDF files. During post-processing, data collected when instruments were out of the water were removed from the time series. Bad data points identified by 1) the deployment and recovery times, 2) data flagged as erroneous by the manufacturer, 3) amplitude or correlation values outside of predetermined quality thresholds for the velocimeter, were removed. The files include data of intermittent poor quality due to interference by vegetation caught on frames. In a few datasets with persistent vegetative interference the compromised data were removed, as noted in the associated metadata. Turbidity data are raw unless otherwise noted and include high values that may be attributable to vegetation. Use of these data requires careful assessment of data quality. LISST volume concentrations are most accurate when the optical percent transmission is above 30, as light passing through the sample volume is unlikely to be scattered by more than one particle.

Files were named with a convention that uses a 12- to 15-digit alpha-numeric code. The first three characters for this dataset are all 'CSF' for the experiment name; the fourth and fifth positions represent the calendar year in which the data were collected (20, 2020); the sixth, seventh and eighth characters are an alphanumeric code for the platform name (CHT, SC1, etc.); the ninth and tenth characters represent the instrument position on the platform, where 01 is the top-most. Next is a two- or three-character code for the instrument type (vec, Nortek's Acoustic Doppler Velocimeter; alt, EofE Ultrasonics' altimeter; wh, RDInstrument's acoustic doppler current profile current data; pt, RBR's bursting pressure sensor with temperature; ctd, RBR's CTD; Tu, RBR's Virtuoso turbidity logger; ls, Sequoia Scientific's LISST; sig, Nortek's Signature1000 ADCP). There are an additional 2-4 characters for instruments that collect in a bursting pattern to indicate whether the file includes the raw burst data (-b), the statistics of the burst (-s), or the wave data (-wvs). This indicator is omitted if there is no bursting pattern.