Acoustic Mid-Ocean Dynamics Experiment (AMODE), 1991, North Atlantic: High-frequency Barotropic Currents

A netcdf data file of high-frequency (> 1 cpd) barotropic currents in the western North Atlantic derived from ocean acoustic tomography data collected during the Acoustic Mid-Ocean Dynamics Experiment (AMODE) in 1991.  AMODE consisted of a pentagonal array of six moored instruments deployed between Puerto Rico and Bermuda.  These are barotropic currents averaged over paths several hundred kilometers long.  As documented in:

Dushaw, B. D., Egbert, G. D., Worcester, P. F., Cornuelle, B. D., Howe, B. M., & Metzger, K. (1997). A TOPEX/POSEIDON global tidal model (TPXO.2) and barotropic tidal currents determined from long-range acoustic transmissions. Prog. Oceanogr., 40 , 337–367. doi: 10.1016/S0079-6611(98)00008-1

these data can be used to derive accurate estimate for barotropic tidal currents in the open ocean.  The file includes 15 time series of 100 to 300 day record length.  See also:

Stammer, D., & Coauthors. (2014). Accuracy assessment of global barotropic ocean tide models. Rev. Geophys., 52 , 243–282. doi: 10.1002/2014RG000450

which compares tidal current harmonic constants derived from these data to those derived from several global tidal models.  The purpose of this upload is to allow others to estimate tides from these data to test other tidal models.  Other than a simple high-pass filter, the time series is unfiltered, but the barotropic tides account for 80-90% of the variance.