This document overviews the fields and processing for the MCR 2013 SWIFT data. Much of details of the methods are published in Zippel and Thomson (2017), JGR:Oceans, and in Zippel and Thomson (in revisions) JPO. Please contact Seth Zippel (zippelsf@gmail.com) before using

SWIFT Structure terms:
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ID: [1×5293 double]
	SWIFT identification number. SWIFTS IDs are numeric, and span 1-7, 9, 40, 50.

time: [1×5293 double]
	MATLAB datenum referenced to local time.

lat: [1×5293 double]
lon: [1×5293 double]
	center (mean) of 5 min buoy location measured by GPS

depth: [1×5293 double]
	Depth is reported in meters, and found found by referencing measured lat/lon locations to bathymetry provided by Cigdem Akan (see Akan et. al. 2017, JGR:Oceans)

driftspd: [1×5293 double]
	5-min average drift speed taken from GPS, in m/s.

driftdir: [1×5293 double]
	direction determined by GPS as well. Referenced to true north, oceanographic convention.

windspd: [1×5293 double]
	Wind speed is reported in m/s, and was measured with an Airmar PB200 at an elevation of approximately 1 m. 

Hs: [1×5293 double]
	Significant wave height is reported in m, and was estimated from the horizontal GPS velocities using the Herbers et. al. (2012) JTECH method.

fp: [1×5293 double]
	Peak wave frequency estimated using Young (1999), units in Hertz

kmean: [1×5293 double]
	Energy Averaged wavenumber, units in radians/m

Da: [1×5293 double]
	Average wave direction, oceanographic convention

wave_spectra: [53×5293 double]
	Sea surface elevation power spectral density, in m^2/Hz

wave_spectra_f: [53×5293 double]
	Frequencies corresponding to the wave_spectra field
	
wave_spectra_k: [53×5293 double]
	wavenumbers estimated via sheared dispersion (Kirby and Chen 1989)

effective_current: [53×5293 double]
	The estimated effective current based on shear and relative wave/current direction

relative_current_dir: [1×5293 double]
	The relative wave/current direction in degrees

brk_rate: [1×5293 double]
	Number of breaking waves per 5 min

Qb: [1×5293 double]
	breaking fraction, estimated as the breaking rate normalized by peak frequency
 
downlooking_vel_magnitude: [25×5293 double]
	When available, downlooking AQD profiles

downlooking_z: [1×25 double]
	depth of downloading profiles

mean_vel_profiles: [25×20 double]
	Mean velocity profiles used in Zippel and Thomson 2017

mean_vel_profiles_edges: [1×21 double]
	bin edges for the above profiles

TKE: [16×5293 double]
	Estimated TKE in each of the 16 uplooking bins, in m^2/s^2

dissipation_rate_SF: [16×5293 double]
	Structure function estimated TKE dissipation rate, in m^2/s^3. used beam 2

dissipation_rate_spectral: [16×5293 double]
	TKE dissipation rate estimated using the tennekes method, in m^2/s^3. used beam 2

uplooking_z: [1×16 double]
	depth of turbulence measurements

tke_spectra_b1/2/3
	turbulence spectra for beams 1,2 and 3. Usually beam 1 was contaminated by buoy wake

tke_freq
	frequency of turbulence spectra