X-Sender: doug@mailhost X-Mailer: QUALCOMM Windows Eudora Pro Version 4.0 Date: Thu, 13 Jan 2000 14:58:34 -0500 To: "Bob O'Malley" From: Doug Hamilton Subject: Re: transfer of w9605a seasoar data and ctd data Cc: fmitchell@nodc.noaa.gov, sstillwaugh@nodc.noaa.gov Greetings Bob,
Thanks for providing the CTD seasoar data and very helpful documentation.  Your data shipment can be referenced in the future by NODC Accession Number 0000005.

As we work more closely with the data we will forward any questions that might arise to you.

Regards,
Doug Hamilton
National Oceanographic Data Center

At 09:41 AM 01/13/2000 -0800, Bob O'Malley wrote:
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>Hello Doug,
>
> I have just transferred two compressed tar file to
>ftp.nodc.noaa.gov, inside the /pub/incoming/ directory.
>The files are called:
>
> w9605a.ctd.tar.Z
>and
> w9605a.csr.tar.Z
>
>
>Inside each of the tar files is a standard transimttal form:
>
> w9605a.ctd.txt
>and
> w9605a.csr.txt
>
>
>These transmittal forms are attached for your reference.
>
>
>The ctd files are standard ctd files from rosette casts;
>the csr files are ctd data obtained from continuous profiling
>with a SeaSoar while underway.
>
>If you have any difficulty with the files, please contact me
>and I will ftp the data to you again.
>
>Thanks for your help, and a few more sets will be coming your
>way soon.
>
>Robert O'Malley
>(541) 737 2180
>omalley@oce.orst.edu
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>X-Sun-Data-Type: default
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>X-Sun-Data-Name: w9605a.ctd.txt
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>
>NODC DOCUMENTATION FOR CTD DATASETS
>
>#documentation_file_name:            *    
>#nodc_accession_number:              *
>#nodc_reference_number:              *
>#nodc_documentation_date:            *
>#nodc_documentor:      *                   
>#distribution_restriction:           none
>#date_received:                      *
>#submission_medium:  ftp tar file
>#submittor_name:  Robert O'Malley
>#submittor_institution: College of Oceanic and Atmosperic Sciences,
> Oregon State University
>#submitter_street_address: 104 Ocean Admin Bldg
>#submitter_city: Corvallis
>#submitter_state: Oregon
>#submitter_country: USA
>#submitter_zip_code:  97331-5503
>#sumitter_telephone_no: 541-737-2180
>#submitter_internet: omalley@oce.orst.edu
>#submitter_email:
>#collection_information (i.e cruise dates, ports, cast numbers,
> time of cast, longitude and latitude of casts):
> Wecoma cruise W9605A
> 10 May to 15 May, 1996
> Newport to Newport, Oregon
> conventional CTD casts made to provide data along 
> standard hydrographic lines off Five Mile Point, Oregon (FM)
> and Newport, Oregon  (NH)
>
> conventional CTD casts made at following times and locations:
>
>Cruise W9605A
>
>Sta.No.    Date     Time(UT)  Latitude     Longitude
>                                 °N           °W 
>  1       10 May     2039     44 38.9      124 10.5
>  2       10 May     2210     44 39.0      124 24.9
>  3       10 May     2340     44 39.1      124 38.9
>  4       11 May     0117     44 39.1      124 52.7
>  5       11 May     1540     43 13.0      124 26.0
>  6       11 May     1629     43 13.0      124 30.0
>  7       11 May     1720     43 13.0      124 35.0
>  8       11 May     1815     43 12.9      124 40.0
>  9       11 May     1917     43 13.0      124 45.0
> 10       11 May     2024     43 13.0      124 50.0
> 11       11 May     2245     43 13.0      125 00.0
> 12       12 May     0013     43 13.0      125 10.0
>
>#principal_investigator_name: John A. Barth
>#pi_institution:  College of Oceanic and Atmosperic Sciences,
>         Oregon State University
>#pi_street-address:  104 Ocean Admin Bldg
>#pi_city: Corvallis
>#pi_state: Oregon
>#pi_country: USA
>#pi_zip_code: 97331-5503
>#pi_telephone_no: 541-737-1607
>#pi_internet: barth@oce.orst.edu
>#pi_email:
>#project: Coastal Jet Separation (CJS) and Coastal Mixing and Optics (CMO)
>          experiments
>#funding agency: NSF (for CJS) and ONR (for CMO)
>#grant/contract-no: NSF Grant OCE-9314370 and ONR Grant N00014-95-1-0382
>#platform_type: research vessel
>#platform_name: Wecoma
>#collection_methods: 
> (i.e. how were the data obtained)
> SeaBird 9/11 plus CTD in General Oceanics
> rosette, with 2 salinity samples per cast (usually);
> salinity samples analyzed in OSU lab with  Guildline Autosal;
> data acquired with SBE SeaSoft 4.207, using MRK files to match
> CTD and sample data
>#analysis_methods:
> (i.e. how were the data processed, calibrated etc)
>  - in situ conductivity calibration determined from comparison
> of CTD values from *.mrk files with sample conductivity
> (calculated from samples salinity and CTD temperature);
> found no correction for CTD conductivity to be required
>  - correction incorporated in Seasoft Configuration file;
> data processed using Seasoft modules DATCNV, ALIGNCTD, CELLTM 
> (with alpha = 0.03 and beta = 9 sec), LOOPEDIT (with minimum
> velocity = 0.0), and BINAVG (averaging to 1 dbar values).
>  - the 1-dbar average T,C data were transferred to Sun
> workstation where we used standard algorithms (Fofonoff and
> Millard, 1983) to calculate salinity, potential temperature,
> density anomaly (sigma-theta), specific volume anonomaly, and
> geopotential anomaly.
>#instruments: SBE 9/11 plus CTD SN 0256 with
> temperature sensor SN 1367 (calibrated at SBE 20 March 96),
> conductivity sensor SN 1030 (calibrated at SBE 29 March 96).
>#publications:
>#associated_datasets: SeaSoar data from W9605A;
>#associated_versions:      *
>#data_set_information:               *
>#data_set_name:      *
>#data_set_volume: 155 kbytes
>#source_computer:  Sun sparc 10
>#source_computer_operating_system: Sun OS 4.1.3
>#source_language: Fortran
>#computer_code: ASCII
>#originator_dataset_identifier: W9605A
>#data_dates:  10 May - 12 May 1996
>#left_geographic_upper_bound:        126W  45N
>#right_geographic_lower_bound:      124W  43N
>#geographic_region:     
> Northeast Pacifc
>#data_type:     CTD data
>#sphere:                             *
>#parameters: pressure (dbars), temperature (C), salinity (psu),
> potential temperature (C), Sigma-theta (kg/cubic meter),
> specific volume anomaly (cl/ton), geopotential anomaly or
> dynamic height (J/kg)
>#format_description:
> (e.g. description of the header, data, record layouts. Include
> units, scales, resolution, accuracy)
>  Files contain 13 lines of header with a format of variable
>   length character strings: ('h ',a), followed by the data
>   with a format of (f7.1,4f8.3,f7.1,f8.3). The header
>   contains: file name, latitude, longitude, time, bottom depth,
>   station number, station name (may be blank),
>   2 comment lines, and the data column labels. The data includes:
>
>   pressure (dbars), accurate to better than plus/minus 1 db
>   temperature (C), accurate to plus/minus 0.01 C
>   salinity (psu), accurate to plus/minus 0.004 psu
>   potential temperature (C),
>   Sigma-theta (kg/cubic meter),
>   specific volume anomaly (cl/ton),
>   geopotential anomaly or dynamic height (J/kg)
>
>#format_publication:
>(a reference for any document which defines/describes the data format(s))
>#format_comments:
> (any information about the format that will be useful, but is not
> elsewhere on this form)
>#misc_documentation:                *
>#submittor_documentation:
> any textual information about the data, provided by the submitter,
> or investigator, (not NODC folks)  For example, in most cases this
> has been an ASCII text file accompanying the data on a DAT , diskette,
> or CDROM.  It may contain information which is redundant with other
> parts of this form.
>
> * leave blank
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>X-Sun-Data-Type: default
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>X-Sun-Data-Name: w9605a.csr.txt
>X-Sun-Charset: us-ascii
>X-Sun-Content-Lines: 232
>
>
>NODC DOCUMENTATION FOR CTD DATASETS
>
>#documentation_file_name:            *    
>#nodc_accession_number:              *
>#nodc_reference_number:              *
>#nodc_documentation_date:            *
>#nodc_documentor:      *                   
>#distribution_restriction:           none
>#date_received:                      *
>#submission_medium: ftp tar file
>#submittor_name:  Robert O'Malley
>#submittor_institution: College of Oceanic and Atmosperic Sciences,
> Oregon State University
>#submitter_street_address: 104 Ocean Admin Bldg
>#submitter_city: Corvallis
>#submitter_state: Oregon
>#submitter_country: USA
>#submitter_zip_code:  97331-5503
>#sumitter_telephone_no: 541-737-2180
>#submitter_internet: omalley@oce.orst.edu
>#submitter_email:
>#collection_information (i.e cruise dates, ports, cast numbers,
> time of cast, longitude and latitude of casts):
> Wecoma cruise W9605A
> 10 May to 15 May, 1996
> Newport to Newport, Oregon
> Seasoar sampling in six tows during W9605A (test cruise) as follows:
>
>Tow no. Start date,time(UTC)  End date,time(UTC)      Parameters measured
>  1       12 May 1028           12 May 1743            P, T1, C1, T2, C2
>  2       12 May 1803           12 May 2211            P, T1, C1, T2, C2
>  3       13 May 1219           13 May 1407            P, T1, C1, T2, C2
>  4       14 May 0440           14 May 1703            P, T1, C1, T2, C2
>  5       14 May 2059           14 May 2243            P, T1, C1, T2, C2
>  6       15 May 0104           15 May 0919            P, T1, C1, T2, C2
>
> All observations were in the area between 42.5 degrees N. and 43.4
> degree N., and between 124.5 degrees W. and 125.2 degrees W.
> Maximum sampling depth usually less than 130 m for all tows.
>#principal_investigator_name: John A. Barth
>#pi_institution:College of Oceanic and Atmosperic Sciences,
>           Oregon State University
>#pi_street-address:  104 Ocean Admin Bldg
>#pi_city: Corvallis
>#pi_state: Oregon
>#pi_country: USA
>#pi_zip_code: 97331-5503
>#pi_telephone_no: 541-737-1607
>#pi_internet: barth@oce.orst.edu
>#pi_email:
>#project: Coastal Jet Separation (CJS) and Coastal Mixing and Optics (CMO)
>          experiments
>#funding agency: NSF (for CJS) and ONR (for CMO)
>#grant/contract-no: NSF Grant OCE-9314370 and ONR Grant N00014-95-1-0382
>#platform_type: research vessel
>#platform_name: Wecoma
>#collection_methods: 
> (i.e. how were the data obtained)
> SeaBird 9/11 plus CTD inside Seasoar vehicle; with dual ducted SBE-3 and SBE-4
> temperature and conductivity sensors inside seasoar vehicle; flow through
> sensor duct pumped by SBE-5 pumps; intake and outlet for each sensor pair was
> directed forward through center of lower nose with intake and outlet
> separated by about 2 cm, the T1-C1 pair were starboard of the centerline,
> and the T2-C2 pair were port of the centerline; final data were all from
> the T1-C1 pair with the exception of the last hour of tow 1 when the
> T1-C1 pair were clogged; final data were from the following pairs of
> sensors: 
>
> Tows 1-2:  SN 1384 and 1538 for T and C
>            (SN 1008 and 1070 for T and C at end of Tow 1)
>
> Tows 3-6:  SN 2127 and 1737 for T and C
>
>#analysis_methods:
> (i.e. how were the data processed, calibrated etc)
>  - used SBE (SeaBird Electronic, Inc.) calibrations for temperature,
>    conductivity and pressure sensors;
>
>    dates of SBE calibrations as follows:
> (tows 1-2)
> P:(SN 50506) 23 April 1992
>                T1:(SN 1384) 28 March 1996
> T2:(SN 1008) 03 February 1996
>                C1:(SN 1538) 15 September 1995
> C2:(SN 1070) 01 March 1996
>
> (tows 3-6)
> P:(SN 64256) 28 November 1995
>                T1:(SN 2127) 26 March 1996
>                T2:(SN 2128) 26 March 1996
>                C1:(SN 1737) 22 March 1996
>                C2:(SN 1738) 22 March 1996
>
>
> Data Processing:
> We compute lagged correlations between temperature and
> conductivity for each sensor pair, separately for ascending and
> descending profiles, and separately for two depth ranges: 10 to
> 90 dbar, and deeper than 90 dbar, provided the segment contains 
> at least 180 scans. The fractional value of the lag at maximum
> correlation was determined by fitting a parabola to the cross-
> correlation values. Outlying lag values (obtained occasionally
> for data segments lasting <10 seconds or having relatively low
> correlations between T and C) were not used in processing the data.
> The edited values of the alignment offset were applied sequentially
> in reprocessing the 24-Hz T/C data. To reprocess data from depths
> shallower than 10 m, we used the value determined from the associated
> (ascending or descending) shallowest layer. Outlying lag values
> that were not used were replaced with local estimates of the lag
> based on nearby values.
>
> To correct the 24-Hz conductivity data for the thermal mass of the
> conductivity cell, we used variable values for both the thermal
> amplitude and the thermal anomaly time constant depending on the
> alignment offset:
>
> tows 1-2 (for T1-C1):
> alpha = 0.0185 + 0.0000(lag)
> tau   = 7.150  + 1.340 (lag**0.5)
>  
> tows 1-2 (for T2-C2 at end of tow 1):
> alpha = 0.0128 + 0.0000(lag)
> tau   = 7.148  + 1.329 (lag**0.5)
>  
> tows 3-6:
> alpha = 0.0127 + 0.0027(lag)
> tau   = 7.150  + 1.341 (lag**0.5)
>
> These variable alpha and tau values represent the optimal
> thermal mass correction based on minimizing the area in
> T-S space of selected test hours for each set of tows.
>  
> The corrected and realigned 24-Hz temperature and conductivity data are
> used to calculate 24-Hz salinity, and these are averaged to yield one-
> second averages stored in hourly files.
>
> Successive hourly files of the reprocessed one-second average data
> were joined to yield a single data file for each tow of the survey.
>
>#instruments:
> tow 1-2:  SBE 9/11 plus CTD SN 0258 with
>           temperature  sensors SN 1384 and SN 1008 and
>           conductivity sensors SN 1538 and SN 1070
>
> tow 3-6:  SBE 9/11 plus CTD SN 0428 with
>           temperature  sensors SN 2127 and SN 2128 and
>           conductivity sensors SN 1737 and SN 1738
>
>#publications:
>#associated_datasets: CTD data from W9605A
>#associated_versions:      *
>#data_set_information:               *
>#data_set_name:      *
>#data_set_volume: 9,201 kbytes  (116,811 records)
>#source_computer:  Sun Sparc 20
>#source_computer_operating_system: Sun OS 4.1.3
>#source_language: Fortran, C
>#computer_code: ASCII
>#originator_dataset_identifier: W9605A
>#data_dates: 12 May - 15 May 1996
>#left_geographic_upper_bound:        126W  44N
>#right_geographic_lower_bound:      124W  42N
>#geographic_region:     
> Northeast Pacific
>#data_type: SEASOAR  data
>#sphere:                             *
>#parameters: latitude (decimal degrees), longitude (decimal degrees), pressure
> (dbars), temperature (C), salinity (psu), Sigma-t (kg/cubic meter), time
> (decimal year-day of 1996), date and time (integral year, month, day,
> hour, minute, second), flag.
>#format_description:
> (e.g. description of the header, data, record layouts. Include
> units, scales, resolution, accuracy)
>
> no header; each line contains:
>  unfiltered GPS latitude
>  unfiltered GPS longitude
>  pressure (dbars), accurate to better than plus/minus 2 db
>  temperature (C), accurate to plus/minus 0.01 C
>  salinity (psu), accurate to plus/minus 0.01 psu
>  sigma-t(kg/cubic meter),
>  decimal year-day (of 1996),
>  integral year, month, day, hour, minute, second
>  flag word (see format comments below for interpretation)
>
> The FORTRAN format for each record is:
> format(f10.5,f11.5,f6.1,3f8.4,f10.5,1x,6i2.2,1x,a4)
>
>#format_publication:
>(a reference for any document which defines/describes the data format(s))
>#format_comments:
> (any information about the format that will be useful, but is not
> elsewhere on this form)
>
> The variable at the end of each line (the flag word) indicates
> different items:
>
> the ones place: 
>
> 0 indicates use of sensor pair 1 (T1, C1)
> 1 indicates use of sensor pair 2 (T2, C2)
>
> the tens place:
> 
> 0 indicates gps fix for location
> 1 indicates linear interpolation between gps fixes
>
> the hundreds place: 
>
> 2 indicates top or bottom of seasoar cycle
> 0 indicates otherwise
>
> the thousands place: 
>
> not used
>
> The files are named tow1, tow2, ..., tow6 and all have the extension
> of ".dat".
>
>#misc_documentation:                *
>#submittor_documentation:
> any textual information about the data, provided by the submitter,
> or investigator, (not NODC folks)  For example, in most cases this
> has been an ASCII text file accompanying the data on a DAT , diskette,
> or CDROM.  It may contain information which is redundant with other
> parts of this form.
>
>
>
> * leave blank
>