SCICEX'93 Temperature-Salinity Section About the Western Arctic Ocean
from USS Pargo

Processed data from Submarine Ship-launched expendable CTDs
(SSXCTD) and the surface CTDs are in a directory called CTD_Section.
These are a section along the cruise track in matrix form, one for
salinity, one for temperature, position, depth, etc.  These are our
best estimate of the truth and are what we use in our analyses.  We
don't show the raw SSXCTD because they required so much calibration
and editing against the wire lowered surface CTD.

ASCII Files:
Tslice => the temperature matrix (127 x 36)
Sslice =>the salinity matrix (127 x 36)
Zslice => depth vector (127 x 1) actually pressure in dbar.
nxyslice => three row label & position matrix (3 x 36)

row 1 => In general cast number, 14.0 for surface cast 14, 6.1 for
expendable cast 6, but certain other combinations occur, as when
certain casts were combined.  See below.

row 2 => Grid distance in kilometers from the pole out 90¡ East,
simple trigonometric approximation from Lat/Lon.

row 3 => Grid distance in kilometers from the pole out 180¡, simple
trigonometric approximation from Lat/Lon.

MAT File:
Slice.mat => For MATLAB users, here is a binary file containing
the above matrices.

Here are some final details that went into creating the CTD_Section.
Users may wish to contact us directly to discuss these in detail.
Following the process described in included text document
'Processing_description.txt.'

XCTD 2 XCTD 5 and XCTD 8 were corrected to more appropriate 450-500 m
averages interpolated between CTDS 1 and 3 for the XCTD2 and XCTD5,
and planar interpolation between CTDS 3, 4, 8, and 9 for XCTD 8.  XCTD
4 was used on the bottom of CTD 2 and XCTD 6 on bottom of CTD 3.  CTD3
now has data from a cast using the alternate SeaBird CTD on the
bottom.  Biggest effect was actually XCTD 8 which had an anomolously
high 450-500 avg (+0.05) salinity before.  Salinity at bottom of CTD2
still looks low because it is from noisy XCTD4 so we still edit it out
here below 312.5 but at least the bottom of CTD 2 (XCTD4) is not used
in adjusting XCTD 2 & 5.

Salinities for CTD Station 2 below 316 dbar were interpolated to full
depth resolution before smoothing to iron out any bump, and
interpolate to CTD Position 2 by distance.

XCTDs 20 &21, XCTDs 24 & 25, and XCTDs 38 & 40 were averaged together
because they are close together and/or have some noise problems.
__J.Morison, 6/5/96



Direct comments and questions to:

Dr. James Morison, Principal Investigator
     (206) 543-1394
     morison@apl.washington.edu


Technical questions may also be directed to:

     Roger Andersen
     (206) 543-1258
     roger@apl.washington.edu
     
Polar Science Center
Applied Physics Laboratory
University of Washington
1013 NE 40th
Seattle, WA  98105   USA
Phone  (206) 543-6613
FAX  (206) 543-3521