These data files were processed by Jim Richman - please contact him if you would like further information.

VACM

The pressure sensors were calibrated both before and after their deployment.  Only the second calibration file was used as the first calibration did not include many temperatures near those encountered during the instrument deployment (0 - 4^oC).  Using these post-deployment calibration files, the raw data were calibrated to physical units.  The pressure data were then converted from units of psia to dbar (using a conversion factor of 1.4511 psia/dbar).  The data were then examined to determine appropriate start and end times for the data set, to remove the effects of the mooring deployment and recovery. 

Corrections were then applied to the pressure data to improve the data quality.  Anomalous data were first removed from each pressure data set by using a median filter.  The pressure data were then quantitatively adjusted using the measured values at the sea surface during the mooring deployment and recovery. 

The resulting data sets (V**.dat), including both the corrected and uncorrected pressures, can be downloaded from the data page.

High-frequency variations were then removed from the data sets by applying a  low-pass filter to the data set (2nd order Butterworth filter forward and back, with a 24 hour cutoff).  These low-pass data were then interpolated to GMT noon and midnight.  The resulting low-pass data files (V**lp.dat) can also be accessed from the data page.

Problems regarding these data are discussed in the discussion page.

MicroCAT

After calibration, data were removed from near the deployment and recovery times.  The resulting data sets (M**.dat) can be downloaded from the data page.

A 1-day, low-pass filter was then applied to the data, and the results were output for data every 12 hours.  These low-pass data  (M**lp.dat)  can also be accessed from the data page.

Webpage by Jasmine S. Bartlett, Oregon State University.