Subject: transfer of o9903 and o9906 seasoar data Date: Fri, 1 Mar 2002 09:21:20 -0800 (PST) From: "Bob O'Malley" To: fmitchell@nodc.noaa.gov CC: sstillwaugh@nodc.noaa.gov, barth@coas.oregonstate.edu Hello Mr. Mitchell I have just transferred two compressed tar files to ftp.nodc.noaa.gov, inside the /pub/incoming/ directory. The files are called: o9903.csr.tar.Z o9906.csr.tar.Z Inside the tar files are the standard transimttal forms: o9903.csr.txt o9906.csr.txt The transmittal forms are attached for your reference. 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. Robert O'Malley (541) 737-2180 omalley@coas.oregonstate.edu --------------------------------------------------------------------- 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: #submitter_email: omalley@coas.oregonstate.edu #collection_information (i.e cruise dates, ports, cast numbers, time of cast, longitude and latitude of casts): R/V Oceanus cruise OC340 (referred to here as O9903) 28 March to 13 April, 1999 Woods Hole to Woods Hole, Massachusetts Seasoar sampling in 11 tows during O9903 as follows: Tow no. Start date,time End date,time Parameters measured (1999) (UT) (1999) (UT) 1 30 Mar 1351 30 Mar 1504 P, T1, C1, T2, C2, FL, TRANS 2 30 Mar 1622 31 Mar 1831 P, T1, C1, T2, C2, FL, TRANS 3 01 Apr 0856 01 Apr 2110 P, T1, C1, T2, C2, FL, TRANS 4 02 Apr 1911 03 Apr 1923 P, T1, C1, T2, C2, FL, TRANS 5 04 Apr 0302 06 Apr 0417 P, T1, C1, T2, C2, FL, TRANS 6 06 Apr 1418 07 Apr 1721 P, T1, C1, T2, C2, FL, TRANS 7 07 Apr 2043 08 Apr 0908 P, T1, C1, T2, C2, FL, TRANS 8 08 Apr 1332 08 Apr 1657 P, T1, C1, T2, C2, FL, TRANS 9 08 Apr 1702 09 Apr 0425 P, T1, C1, T2, C2, FL, TRANS 10 09 Apr 1213 10 Apr 0132 P, T1, C1, T2, C2, FL, TRANS 11 10 Apr 0440 11 Apr 1208 P, T1, C1, T2, C2, FL, TRANS All observations were between 42.5 and 41.9 degrees N. latitude, and between 66.8 degrees and 66.2 degrees W. longitude. Maximum sampling depth approximately 120 m for all tows. #principal_investigator_name: John A. Barth (also D. Hebert from URI) #pi_institution:College of Oceanic and Atmospheric 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: #pi_email: barth@coas.oregonstate.edu #project: GLOBEC Georges Bank #funding agency: NSF #grant/contract-no: OCE-9813641 #platform_type: research vessel #platform_name: Oceanus #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 from the T1-C1 pair for tows 5,8-11; the T2-C2 pair were used for tows 1-4,6,7; final data were from the following pairs of sensors: Tows 1-4,6,7: SN 2127 and 1737 for T and C Tows 5,8-11: SN 2128 and 1738 for T and C The CTD subunit was replaced between tows 3 and 4, resulting in the use of the following pressure sensors: Tows 1-3: SN 50506 for P (CTD #258) Tows 4-11: SN 63505 for P (CTD from Oceanus) #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 CTD #258 calibrations as follows: P:(SN 50506) 23 April 1992 T1:(SN 2128) 20 February 1999 T2:(SN 2127) 20 February 1999 C1:(SN 1738) 23 February 1999 C2:(SN 1737) 23 February 1999 and date of alternate CTD SBE calibration: P:(SN 63505) 10 Novemer 1996 Data Processing: We compute lagged correlations between temperature and conductivity for each sensor pair, and separately for each ascending and descending profile, provided the segment contains at least 180 scans, and were obtained between depths of 1 and 150 m. The fractional value of the lag at maximum correlation was determined by fitting a parabola to the cross-correlation values. The lags were then repeatedly cleaned using a three- sigma test on a centered, moving, 100-pt window until all values were within three sigma of the mean, the nulled outliers were then replaced with the mean value at that point. This time series of lags was then examined to be certain the automated cleaning was appropriate, and corrections were made when necessary. The final values of the alignment offset were then applied sequentially in reprocessing the 24-Hz T/C data. To reprocess data from depths shallower than 1 m, we used the value determined from the associated (ascending or descending) shallowest layer. 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 (values shown are for all tows): T1-C1: alpha = 1.06533E-02 + 2.72118E-03(lag) tau = 7.15038 + 1.33821 (lag**0.5) T2-C2: alpha = 0.0000 + 1.22128E-02(lag) tau = 7.14939 + 1.33904 (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 the survey. 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 1-3: SBE 9/11 plus CTD SN 0258 with SBE pressure sensor SN 50506 SBE temperature sensors SN 2127 and SN 2128 SBE conductivity sensors SN 1737 and SN 1738 WetLABS WETStar Fluorometer Seatech Transmissometer SN 15 tow 4-11: SBE 9/11 plus CTD from Oceanus with SBE pressure sensor SN 63505 SBE temperature sensors SN 2127 and SN 2128 SBE conductivity sensors SN 1737 and SN 1738 WetLABS WETStar Fluorometer Seatech Transmissometer SN 15 #publications: #associated_datasets: #associated_versions: * #data_set_information: * #data_set_name: * #data_set_volume: 67,769 kbytes (752,707 records) #source_computer: Sun Sparc 20 #source_computer_operating_system: Sun OS 5.6 #source_language: Fortran, C #computer_code: ASCII #originator_dataset_identifier: O9903 #data_dates: 30 March - 11 April 1999 #left_geographic_upper_bound: 67W 43N #right_geographic_lower_bound: 66W 41N #geographic_region: Northwest Atlantic #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 1999), date and time (integral year, month, day, hour, minute, second), flag, fluorescence (0-5 volts), light transmission (0-5 volts). . #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 1999), integral year, month, day, hour, minute, second flag word (see format comments below for interpretation) fluorescence (volts), accurate to 0.001 volts light transmission (volts), accurate to 0.001 volts The FORTRAN format for each record is: format (f10.5,f11.5,f6.1,3f8.4,f10.5,1x,6i2.2,1x,a4, 2f6.3) #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: 1 indicates collection of water sample from the 5-m intake 0 indicates otherwise The files all have the extension of ".dat" and are divided into the eleven tows (tow1.dat, etc). #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 --------------------------------------------------------------------- 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: #submitter_email: omalley@coas.oregonstate.edu #collection_information (i.e cruise dates, ports, cast numbers, time of cast, longitude and latitude of casts): R/V Oceanus cruise OC343 (referred to here as O9906) 14 June to 01 July, 1999 Woods Hole to Woods Hole, Massachusetts Seasoar sampling in 10 tows during O9903 as follows: Tow no. Start date,time End date,time Parameters measured (1999) (UT) (1999) (UT) 1 15 Jun 1547 16 Jun 1921 P, T1, C1, T2, C2, FL, TRANS 2 16 Jun 2320 19 Jun 0100 P, T1, C1, T2, C2, FL, TRANS, FPAK 3 19 Jun 0803 21 Jun 1012 P, T1, C1, T2, C2, FL, TRANS, FPAK 4 21 Jun 1624 21 Jun 2331 P, T1, C1, T2, C2, FL, TRANS, FPAK 5 22 Jun 0140 24 Jun 0108 P, T1, C1, T2, C2, FL, TRANS, FPAK 6 24 Jun 0814 25 Jun 1348 P, T1, C1, T2, C2, FL, TRANS, FPAK 7 25 Jun 1826 25 Jun 2151 P, T1, C1, T2, C2, FL, TRANS, FPAK 8 25 Jun 2322 26 Jun 1233 P, T1, C1, T2, C2, FL, TRANS, FPAK 9 26 Jun 1304 28 Jun 0302 P, T1, C1, T2, C2, FL, TRANS, FPAK 10 28 Jun 0852 30 Jun 1413 P, T1, C1, T2, C2, FL, TRANS, FPAK All observations were between 41.3 and 40.5 degrees N. latitude, and between 67.8 degrees and 66.8 degrees W. longitude. Maximum sampling depth approximately 120 m for all tows. #principal_investigator_name: John A. Barth (also D. Hebert from URI) #pi_institution:College of Oceanic and Atmospheric 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: #pi_email: barth@coas.oregonstate.edu #project: GLOBEC Georges Bank #funding agency: NSF #grant/contract-no: OCE-9813641 #platform_type: research vessel #platform_name: Oceanus #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 from the T1-C1 pair for all or part of tows 1-10; the T2-C2 pair were used in part of tows 4,6,8,9; final data were from the following pairs of sensors: Tows 1-10: SN 2128 and 1738 for T and C Tows 4,6,8,9: 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 CTD #428 calibrations as follows: P:(SN 64256) 28 November 1995 T1:(SN 2128) 20 February 1999 T2:(SN 2127) 20 February 1999 C1:(SN 1738) 23 February 1999 C2:(SN 1737) 23 February 1999 Data Processing: We compute lagged correlations between temperature and conductivity for each sensor pair, and separately for each ascending and descending profile, provided the segment contains at least 180 scans, and were obtained between depths of 1 and 150 m. The fractional value of the lag at maximum correlation was determined by fitting a parabola to the cross-correlation values. The lags were then repeatedly cleaned using a three- sigma test on a centered, moving, 100-pt window until all values were within three sigma of the mean, the nulled outliers were then replaced with the mean value at that point. This time series of lags was then examined to be certain the automated cleaning was appropriate, and corrections were made when necessary. The final values of the alignment offset were then applied sequentially in reprocessing the 24-Hz T/C data. To reprocess data from depths shallower than 1 m, we used the value determined from the associated (ascending or descending) shallowest layer. 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 (values shown are for all tows): T1-C1: alpha = 1.06833E-02 + 0.00000(lag) tau = 7.15258 + 1.34014 (lag**0.5) T2-C2: alpha = 5.26523E-03 + 0.00000(lag) tau = 7.20144 + 1.35586 (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 the survey. 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 1-10: SBE 9/11 plus CTD SN 0428 with SBE pressure sensor SN 64256 SBE temperature sensors SN 2127 and SN 2128 SBE conductivity sensors SN 1737 and SN 1738 WetLABS WETStar Fluorometer Seatech Transmissometer WetLABS FlashPAK Fluorometer SN 016 #publications: #associated_datasets: #associated_versions: * #data_set_information: * #data_set_name: * #data_set_volume: 107,073 kbytes (1,116,760 records) #source_computer: Sun Sparc 20 #source_computer_operating_system: Sun OS 5.6 #source_language: Fortran, C #computer_code: ASCII #originator_dataset_identifier: O9906 #data_dates: 15 June - 30 June 1999 #left_geographic_upper_bound: 68W 41N #right_geographic_lower_bound: 66W 40N #geographic_region: Northwest Atlantic #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 1999), date and time (integral year, month, day, hour, minute, second), flag, fluorescence (0-5 volts), light transmission (0-5 volts), FPAK fluorescence (460-nm excitation) (0-5 volts). . #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 1999), integral year, month, day, hour, minute, second flag word (see format comments below for interpretation) fluorescence (volts), accurate to 0.001 volts light transmission (volts), accurate to 0.001 volts FPAK fluorescence (volts), accurate to 0.001 volts The FORTRAN format for each record is: format (f10.5,f11.5,f6.1,3f8.4,f10.5,1x,6i2.2,1x,a4, 3f6.3) #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: 1 indicates collection of water sample from the 5-m intake 0 indicates otherwise The files all have the extension of ".dat" and are divided into the ten tows (tow1.dat, etc). #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