This dataset contains SWIFT data measured in the December 2019 experiment conducted in the NE Pacific, funded by NSF-OCE 1756040. These data were used in the manuscript “Rapid deterministic wave prediction using a sparse array of buoys” published in Ocean Engineering (2021). Additional SWIFT data is available at swiftserver.apl.washington.edu. This data and code is provided without warranty.

Alex Fisher
afisher@apl.washington.edu
Coauthors: Jim Thomson, Michael Schwendeman
March 15, 2021

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Each .nc file contains processed SWIFT data collected in December 2019 field experiment. Raw wave time series have been linearly interpolated to a common time base based on the coarsest sampling frequency used in each contemporaneous burst. Missing values have been replaced with NaN. File naming convention indicates day and time of deployment: 
swiftdata_(year)(month)(day)UTC(hr)(mn).nc

Variable definitions:

time: UTC time stamp of contemporaneous records in MATLAB datum format
geo_x, geo_y: local Cartesian coordinates
lon,lat: Earth geodetic coordinates
swift_id: SWIFT serial number
nu: scalar bandwidth
Tp: peak wave period in seconds
driftspd: buoy drift speed [m/s]
driftdirT: buoy drift direction [degrees from true North]
z: surface displacement measurements
u: surface east velocity measurements
v: surface north velocity measurements
spec_f: frequency vector used in directional wave spectrum [Hz]
spec_theta: directional bins used in wave spectrum [degrees]
spec_Etheta: Directional wave spectrum averaged over previous hour of data [m^2 s^-1 deg-^1]
forecast_buoy_id: Serial number of down-wave target buoy omitted from reconstruction.