Data Report NBP0103 GLOBEC I April 23, 2001 - June 6, 2001 United States Antarctic Program RVIB Nathaniel B. Palmer Raytheon Polar Services Company June 6, 2001 Data Report Prepared by, Aaron Hunt, Tom Bolmer & Jim Dolan TABLE OF CONTENTS INTRODUCTION 3 ARCHIVE DATA EXTRACTION 4 DISTRIBUTION CONTENTS 5 ADCP 5 CTD 5 CRUISE TRACK 6 NBP DATA PRODUCTS: MGD77 & JGOFS 6 JGOFS 6 MGD77 7 RVDAS 8 Data File Names and Structures 8 OCEAN DATA FILES 14 PROCESSING RAW TSG DATA 14 ADDITIONAL & SUPPLEMENTAL FILES 15 ADDITIONAL FILES 15 NBP0103 SENSORS 16 SHIPBOARD SENSORS 16 0103 CTD SENSORS: 16 0103 ROV SENSORS: 16 0103 MOCNESS SENSORS: 17 ACQUISITION PROBLEMS AND EVENTS 17 CALIBRATIONS 18 Barometer 18 Pyranometer/PSP 19 Radiometer/PIR 20 Gravity Tie 21 Mast Par 22 GUV 23 GUV 24 Thermosalinograph 25 TSG Internal 26 TSG External 27 Temperature/Humidity Sensor 29 Belfort Wind Vector Transmitter 30 CTD INSTRUMENTS 31 Transmissometer 31 Underwater PAR Sensor 32 Fluorimeter 33 Flourimeter 34 Fluorimeter 35 Fluorimeter 36 SBE 5T Submersible Pump Serial No: 050889 37 SBE 5T Submersible Pump Serial No:051265 38 Pressure Sensor 39 Dissolved Oxygen Sensor Serial No: 130327 40 Conductivity Sensor (Primary) 41 Conductivity Sensor (Secondary) 42 Temperature Sensor (Primary) 43 Temperature Sensor (Secondary) 45 Underwater PAR Sensor (1st five casts) 46 Underwater PAR Sensor (Starting 6th Cast) 47 ROV SENSORS 48 Pressure Sensor 48 Conductivity 49 Temperature 50 MOCNESS CALIBRATIONS 51 Pressure Sensor 51 Pressure Sensor 52 Temperature 53 Conductivity 54 Dissolved Oxygen 55 C-Star 56 Fluorometer 57 Fluorometer 58 Introduction The NBP data acquisition systems continuously log data from several instruments throughout the cruise. This document describes the format of that data and its location on the distribution DAT tapes. It also contains important information which may affect how this data is processed such as instrument failures or other known problems with acquisition. The data collected during this cruise is distributed on a CD-ROM written in ISO9660 level-1 format. This data format has very strict requirements on filenames and organization. However, it is readable by virtually every computing platform. The data is contained in a Unix tar archive called NBP0103.tar. All of the data has been compressed using Unix "gzip" compression. Gzipped files have a ".gz" extension. Tools are available on all platforms for uncompressing and de-archiving these formats. On Macintosh, Stuffit Expander with DropStuff will open a tar archive and uncompress gzipped and Unix compressed files. For Windows9X, WinZip, a shareware utility included on this CD (remember, it is shareware) will open these files. IMPORTANT: Read the last section in this document, Acquisition Problems and Events, for important information that may affect the processing of this data. Archive Data Extraction It is often useful to know exactly how an archive was produced when expanding its contents. NBP0103.tar was created on an SGI using the following commands: tar cvLf archive-file files-to-be-archived To create a list of the files in the archive: tar tvf archive-file > contents.list To extract the files from the archive: tar xvf archive-file file(s)-to-extract G-zipped files will have a ".gz" extension on the filename. These files can be decompressed after de-archiving, using: gunzip filename.gz The directories in the archive are structured in the following manner: CD 1 of 2 CD 1 of 2 continued NBP0103.GMT NBP0103.MGD NBP0103.TRK NBP0103.ps TOMPLOT.ps.gz EVENTLOG.gz ADCP/ 0103ADCP.tar 0103PING.zip GEOPDATA/ 0103BAT.tar 0103GRV.tar 0103JGOF.tar 0103MAG.tar 0103NGL.tar 0103PCD.tar 0103PS.tar 0103SB.tar 0103SIM.tar 0103TSG.tar MOCNESS/ 0103MOCB.tar 0103MOCD.tar OCEAN/ CTD/ 0103PROC.tar 0103RAW.tar 0103PCO2.tar 0103TSGF.tar 0103XBT.tar 0103GUV.tar 0103XCTD.tar REPORT/ 0103DATA.doc 0103DATA.htm 0103DATA.txt CD_cases CALIBRAT/ INSTRMNT.CNF RVDAS/ NAV/ 0103PCOD UW/ 0103BAR.tar 0103BAT.tar 0103FLR.tar 0103GRV.tar 0103MAG.tar 0103MET.tar 0103PCO2.tar 0103SIM.tar 0103SVP.tar 0103TSG.tar CD 2 of 2 RVDAS/ NAV/ 0103ADCP.tar 01033DF.tar 0103GYR.tar 0103PCOD.tar 0103NGL.tar WINZIP ADDITION/ 0103ESS.tar 0103MET.tar Distribution Contents ADCP The ADCP data set is broken up into files representing 24 hours of data collection. The files are named pingdata.xxx (xxx representing a day number). Note that these extensions do NOT represent Julian day numbers. Please refer to the file's creation date. Some ADCP data is also transmitted to RVDAS. East and North vectors for ship's speed relative to the reference layer and ship's heading are archived in the navigational data section of RVDAS. CTD The ctd data and report have been placed in the tar file 0103ctd.tar, which contains the following structure: ctdlist.txt (list of all ctd stations) ctdsetup (batch files, cfg & con files) 0103Raw (raw datafiles) 0103Proc (processed data files) seasoft (application for processing CTD data Individual CTD casts are represented by a set of four files containing a bottle-firing file (.bl), a configuration file (.con), a data file (.dat) and a header file (.hdr). Casts are numbered according to the cruise id number (0103) followed by the number of the cast. For example; the raw files associated with the third cast on this cruise are: 0103003.bl, 0103003.con, 0103003.dat, 0103003.hdr. The raw and processed data files are in binary format. The 1 db bin averaged up and down traces have been converted to ASCII (.asc files). SeaBird's SeaSoft software used to acquire the data is included in the CTD data distribution in the "Seasoft" directory. SeaSoft is a DOS-based software package, but can be run in a DOS window under the Windows9X operating systems for cast playback and data analysis. The software package used to process this data (version 4.234) is included on this CD in the directory Seasoft. The configuration files and processing scripts (written by Suzanne O'Hara for the standard processing of the SBE 9/11plus) are also included in the Seasoft directory under in the ctdsetup directory. The directory report contains the CTD data report with folder for all plots produced during the cruise. The directory seacat has a structure similar to the ctd directory and contains the data from the SeaCat CTD unit. File extension definitions: EXT Description ASC The data portion of a .CNV converted data file written in ASCII by ASCIIOUT, or files written by TERM37. BL Created by SEASAVE when a bottle fire confirmation is received. Contains bottle sequence number, position, date, time, beginning and ending scan numbers. BTL Created by ROSSUM. This is a summary of the data in a .ROS file. BSR Bottle scan range file, used by DATCNV to create a .ROS file. CFG Used by SEASOFT modules to store the input filename, input data path, output data path, and other miscellaneous module specific parameters. CTR Density contour file generated by CONTOUR. CNV 'Converted' engineering unit data file. An ASCII header precedes the data. CON Contains instrument configuration and calibration coefficients, used by SEACON, SEASAVE, and DATCNV DAT Raw binary data, optionally with header information (SBE 9/11, 11X, 9/11plus, and data files created with previous versions of SEASOFT). DSP Used by SEASAVE to store data acquisition and display parameters. HDR R. Header portion of a .CNV converted data file written by ASCIIOUT. 2) Header recorded when acquiring real time data or uploading archived data. HEX Raw HEX data with header information (SBE 16, 17, 19, 21, and 25) MRK Marker file created by SEASAVE during real time data acquisition. PLT Used by SEAPLOT to store display parameters ROS Scans marked with the bottle fire confirmation bit, or defined by a .BSR file, written by DATCNV. *Note: This is a complete list of all file extensions. This data set may not contain ALL of the above extension files. SEASOFT modules search the current directory for DSP, PLT, and CFG files. SEASOFT modules search the 'input data path' for CON, HEX, DAT, and CNV files. One exception is SEACON which searches the current directory for CON files. For more information and updated software visit the web site at www.seabird.com; or contact (206) 643-9866, seabird@seabird.com, Sea-Bird Electronics 1808 - 136th Place NE Bellevue, WA 98005 Cruise Track A Postscript cruise track file has been produced for this cruise called NBP0103.ps. It is a standard US Letter sized (8.5" x 11") plot. A GMT cruise track file (NBP0103.trk) is also included, which contains the longitude and latitude at one-minute intervals extracted from the NBP0103.gmt file. NBP Data Products: MGD77 & JGOFS NBP0103.mgd NBP0103.gmt /geopdata/JGOF /geopdata/PROC Two data products are created on each cruise of the NBP: JGOFS and MGD77. JGOFS The JGOFS data set consists of a single file produced each day named jgDDD.dat.gz where DDD is the Julian day the data was acquired. The ".gz" extension indicates that the individual files are compressed before archiving. The daily file consists of 20 separate columnar fields in text format, which are described below. The JGOFS data set is obtained primarily by applying calibrations to raw data and decimating to whole minute intervals. However, several fields are derived measurements from more than a single raw input. For example, Course Made Good (CMG) and Speed Over Ground (SOG) are calculated from gyro and GPS inputs by the NGL software package. Similarly, the wind direction field is the vector sum of the separate X and Y inputs received from the wind instruments. The JGOFS data set was used to produce the daily data plots during the cruise. Note: Null, unused, or unknown fields are filled with 9's in the JGOFS data. TSG data is processed by RVDAS. Field Data Units 01 GMT date dd/mm/yy 02 GMT time hh:mm:ss 03 NGL latitude (negative is South) dd.dddd 04 NGL longitude (negative is West) ddd.dddd 05 speed over ground Knots 06 GPS HDOP - 07 Gyro Heading Degrees (azimuth) 08 course made good Degrees (azimuth) 09 mast PAR ?Einsteins/meters2 sec 10 sea surface temperature (C 11 sea surface conductivity siemens/meter 12 sea surface salinity PSU 13 sea depth (uncorrected, calc. sw sound vel. 1500 m/s) meters 14 true wind speed (port windbird) meters/sec 15 true wind direction (port windbird) degrees (azimuth) 16 ambient air temperature (C 17 relative humidity % 18 barometric pressure mBars 19 sea surface fluorometry volts (0-5 FSO) 20 not used - MGD77 The MGD77 data set is contained in a single file for the entire cruise named NBP0103.mgd, There is also a file named NBP0103.gmt. This file is the output of the mgd77togmt utility using NBP0103.mgd as input. The "gmt" file can be useful for plotting data using the GMT plotting package. The directory /geopdata/PROC contains a file from each day of data acquisition named: Dddd.fnl.gz, where ddd is the Julian day. These files contain all the data used to produce the "mgd" file, but in a space-delimited columnar format that may be more accessible for some purposes. In addition, these files contain data at one-second intervals rather than one minute and are individually "gzipped" to save space. Below is a detailed description of the MGD77 data set format. All decimal points are implied. Leading zeros and blanks are equivalent. Unknown or unused fields are to be filled with 9's. All "corrections", such as time zone, diurnal magnetics, and Eotvos, are understood to be added. Col Len Type Description 1 1 int DATA RECORD TYPE Set to "3" for data record. 2-9 8 char SURVEY IDENTIFIER 10-14 5 int TIME-ZONE CORRECTION: In hundredths of hours. Corrects time (in characters 13-27) to GMT when added: equals zero when time is GMT. 15-16 2 int YEAR 2 digit year 17-18 2 int MONTH (e.g. May is represented as 05) 19-20 2 int DAY Day of month 21-22 2 int HOUR 23-27 5 real MINUTES X 1000 28-35 8 real LATITUDE X 100000 + = North; - = South. (-9000000 to 9000000) 36-44 9 real LONGITUDE X 100000 + = East; - = West. (-18000000 to 18000000) 45 1 int POSITION TYPE CODE: 1=Observed fix; 3=Interpolated; 9=Unspecified 46-51 6 real BATHYMETRY, 2- WAY TRAVELTIME: In 10,000th of seconds. Corrected for transducer depth and other such corrections 52-57 6 real BATHYMETRY, CORRECTED DEPTH: In tenths of meters. 58-59 2 int BATHYMETRIC CORRECTION CODE: This code details the procedure used for determining the sound velocity correction to depth 60 1 int BATHYMETRIC TYPE CODE: 1 = Observed; 3 = Interpolated (Header Seq. 12); 9 = Unspecified 61-66 6 real MAGNETICS TOTAL FIELD, 1ST SENSOR: In tenths of nanoteslas (gammas). 67-72 6 real MAGNETICS TOTAL FIELD, 2ND SENSOR: In tenths of nanoteslas (gammas). For trailing sensor. 73-78 6 real MAGNETICS RESIDUAL FIELD: In tenths of nanoteslas (gammas). The reference field used is in Header Seq. 13. 79 1 int SENSOR FOR RESIDUAL FIELD 1 = 1st or leading sensor; 2 = 2nd or trailing sensor; 9 = Unspecified 80-84 5 real MAGNETICS DIURNAL CORRECTION: In tenths of nanoteslas (gammas). (In nanoteslas) if 9-filled (i.e., set to "+9999"), total and residual fields are assumed to be uncorrected; if used, total and residuals are assumed to have been already corrected. 85-90 6 F6.0 DEPTH OR ALTITUDE OF MAGNETICS SENSOR: In meters. + = Below sea level 3 = Above sea level 91-9 7 real OBSERVED GRAVITY: In 10th of mgals. Corrected for Eotvos, drift, tares. 98-10 6 real EOTVOS CORRECTION: In tenths of mgals. E = 7.5 V cos phi sin alpha + 0.0042 V*V 104-108 5 real FREE-AIR ANOMALY In tenths of milligals Free-air Anomaly = G(observed) - G(theoretical) 109-113 5 char SEISMIC LINE NUMBER: Used for cross-referencing with seismic data. 114-119 6 char SEISMIC SHOT-POINT NUMBER 120 1 int QUALITY CODE FOR NAVIGATION: 5=Suspected, by the originating institution;6=Suspected, by the data center, 9=No identifiable problem found RVDAS rvdas/uw rvdas/nav Daily data processing of the RVDAS data is performed to convert values into usable units and as a check of the proper operation of the DAS. Both the raw and processed data sets from RVDAS are included in the data distribution. Below you will find detailed information on the data included. Be sure to read the "Significant Acquisition Events" section below for important information about data acquisition during this cruise. Meteorological and Light Data Measurement File ID Collect. Status Rate Instrument Air Temperature met1 continuous 0.5 sec R. M. young 41342C Relative Humidity met1 continuous 0.5 sec Rotonics MP-101A-C4 Wind Speed/Direction met1 continuous 0.5 sec Belfort Model 5-122AHD PIR (LW radiation) met1 continuous 0.5 sec Eppley PIR PSP (SW radiation) met1 continuous 0.5 sec Eppley PSP PhotoActive Radiation met1 continuous 0.5 sec BSI QSR-240 Barometer bar1 continuous 9 sec AIR-DB-3A Navigational Data Measurement File ID Collect. Status Rate Instrument Attitude GPS 3df1 continuous 1 sec Ashtec 12 P-Code GPS PCOD continuous 1 sec Trimble 20636-00SM Gyro gyr1 continuous 0.2 sec Yokogawa Gyro NGL ngl1 continuous 1 sec NGL Processed Nav Data Geophysical Data Measurement File ID Collect. Status Rate Instrument Gravimeter grv1 continuous 1 sec Lacoste & Romberg Gravity Magnetometer mag1 transit 15 sec EG&G G-866 Bathymetry bat1 continuous varies ODEC Bathy 2000 Bathymetry sim1 depth < 2500 m varies Simrad EK200 Sonar Oceanographic Data Measurement File ID Collect. Status Rate Instrument Conductivty tsg1 continuous 15 sec SeaBird 21 Salinity tsgfl continuous 15 sec calculated from conductivity Sea S Temperature tsg1 continuous 15 sec SeaBird 3-01/S Fluorometry flr1 & tsg1 continuous 15 sec Turner 10-AU-005 pCO2 pco2 continuous 70 sec ADCP adcp continuous 1 sec RD Instruments Data File Names and Structures RVDAS data is divided into two broad categories, Underway and Navigation. The groups are abbreviated "uw" and "nav". Thus, these two subdirectories exist under the top-level rvdas directory. The instruments are broken down as shown. Each data file is gzipped to save space on the distribution. Not all data types are collected everyday or on every cruise. RVDAS data files are named following the convention: NBP[CruiseID][ChannelID].dDDD. * The CruiseID is the numeric name of the cruise, for example: NBP0103. * The FileID (aka Channel ID) is a 4-character code representing the system being logged, for example: met1 (for meteorology) * DDD is the Julian day of the data collection Underway Data Channel ID Navigation Data Channel ID Barometer bar1 Ashtech GPS 3df1 Bathy 2000 bat1 Trimble GPS (P-Code) PCOD Fluorometer flr1 Gyro Compass gyr1 Gravimeter grv1 Furuno GPS gp02 Magnetometer mag1 NGL ngl1 Meteorological met1 ADCP course adcp Simrad sim1 Thermosalinograph tsg1 pCO2 pco2 Data is received by the RVDAS system via RS-232 serial connections. The data files that comprise the rvdas data set are described below. A time tag is added to each line of data received and the data is written to disk. YY+DDD:HH:MM:SS.SSS [data stream from instrument] Where, YY: two-digit year, DDD: Julian Day, HH: 2 digit hours, MM: 2 digit minutes SS.SSS: seconds. All times are UTC. The delimiters used to separate fields in the raw data files are usually spaces and commas, but other delimiters are used (::, =, @) and occasionally there is no delimiter. Care should be taken when reprocessing the data that the fields separations are clearly understood. An example data file: bar1 00+019:23:59:57.441 963.25 Field Data Units 1 Time Tag 2 Pressure mBar bat1 00+019:23:59:53.901 ;I04485.3ME-23.0,I00000.0,-99.9, 0000@01/11/00,23:59:52.08 PW2 PF1 SF1 PL3 MO4 SB3 PO0 TX1 TR: GM5 1500 06.7 -72.1 Field Data Units 1 RVDAS Time Tag 2 Flagged Low Freq. Chn. Depth w/ units ;FDDDDD.DUN F= V valid, I invalid meters 3 Low Freq. Echo Strength EEE.EE dB 4 Flagged High Freq. Chn. Depth - unused 5 High Freq. Echo Strength - unused 6 Signed Heave Data SHHHH cm 7 Date mm/dd/yy 8 Time hh:mm:ss 9 transmit pulse window type: PW1 Rectangular, PW2 Hamming, PW3 Cosine, PW4 Blackman 10 Primary transmit frequency PF1 3.5 kHz, PF2 12.0 kHz 11 Parametric mode secondary freq. SF1 3.5 kHz, SF2 12.0 kHz 12 pulse length: PL1 200usec, PL2 500usec, PL3 1msec, PL4 2msec, PL5 5msec, PL6 10msec, PL7 25msec. If transmit mode is FM: PL1 25msec, PL2 50msec, PL3 100msec. 13 Operating Mode: MO1 CW parametric, MO2 CW, MO3 FM parametric, MO4 FM 14 Frequency sweep bandwidth: SB1 1 kHz, SB2 2 kHz, SB3 5 kHz 15 power level: PO1 0dB, PO2 -6dB, PO3 -12dB, PO4 -18dB, PO5 -24dB, PO6 -30dB, PO6 -30 dB, PO7 -36dB, PO8 -42dB 16 Transmit Mode: TX1 single ping active, TX2 pinger listen, TX3 multipinging TR, TX4 multipinging TR, TX5 multipinging TTRR, TX6 multipinging TTTTRRRR, TX7 multipinging TTTTTRRRRR 17 Transmit Rate: TR3 4Hz, TR4 2Hz, TR5 1Hz, TR6 .5Hz, TR7 .33Hz, TR8 .25Hz, TR9 .20Hz, TR: = .10Hz, TR; = .05Hz 18 System Gain Mode: GM0 hydrographic AGC, GM1 to GM9 hydrographic +3db to + 27db manual. GMA to GMD hydrographic + 30db through + 60db manual, GME to GMK sub-bottom 1 through sub-bottom 7 19 speed of sound m/sec 20 depth of sonar window below sea-level meters 21 background noise level in fixed point reference dB/V flr1 00+019:23:59:58.061 0 0818 :: 1/19/00 17:23:17 = 0.983 (RAW) 1.2 (C) Field Data Units 1 RVDAS Time Tag 2 marker 0 to 8 3 4-digit index 4 date mm/dd/yy 5 time hh:mm:ss 6 signal 7 signal units of measurement 8 cell temperature 9 temperature units grv1 99+099:00:18:19.775 your_line#1999 99 01818 9735.4 Field Data Units Conversion 1 RVDAS Time Tag 2 text string 3 gravity device date yyyyjjjhhmmss 3 gravity count count mgal = count x 1.0047 + offset mag1 99+099:00:00:23.203 % 0 98 235928 0?372453 Field Data Units 1 RVDAS Time Tag 2 % 0 denotes G-866 magnetometer 3 Julian Day 4 Time 5 0? denotes high noise condition 6 Magnetic Data (last digit is 10th's place) nT met1 00+019:23:59:59.761 $MET: 0.84, 1.12, 0.76, 1.06, 4.98, 0.26, 1.49, 3.93, 8.94, 0.80, 0.01, 0.01, 0.01, 0.22, 0.02, 0.1,40.11,4.96 Field Data Units Conversion 1 RVDAS Time Tag 2 $MET 3 starboard windbird north rel. speed vector voltage V m/s = 7.553 x voltage 4 starboard windbird east rel. speed vector voltage V m/s = 7.553 x voltage 5 Port windbird north rel. speed vector voltage V m/s = 7.553 x voltage 6 Port windbird east rel. speed vector voltage V m/s = 7.553 x voltage 7 Air temperature V (C = 10 x voltage - 50 8 PIR Eppley Pyrgeometer V W/m2 = 923.87 x voltage 9 PSP Eppley Pyranometer V W/m2 = 194.53 x voltage 10 Temperature at the Relative Humidity Sensor V (C = 10 x voltage - 40 11 Relative Humidity V %RH = 10 x voltage 12 PAR Irradiance V ?Ei/m2s = 1662.24 x voltage 13-17 spare channels 18 AC line voltage V VAC = 150 x voltage 19 uMac Temperature C 20 uMac DC Supply V pCO2 00+021:23:59:43.190 2000021.9992 2382.4 984.2 30.73 50.8 345.9 334.1 -1.70 -68.046 -144.446 Equil Field Data Units 1 RVDAS Time Tag 2 pCO2 Time Tag (decimal is time of day) yyyjdd.fod 3 raw voltage mV 4 barometer mBar 5 cell temperature (C 6 flow rate cm3/min 7 concentration ppm 8 pCO2 pressure microAtm 9 Equilibrated temperature (C 10 Latitude degrees 11 Longitude degrees 12 Flow Source (Equil = pCO2 measurement) sim1 00+005:00:00:52.388 D1,23583509,1479.6, 17, 1, 0 Field Data Units 1 RVDAS Time Tag 2 Header 3 Time Tag hhmmss.sss 4 depth m 5 bottom surface backscattering strength dBar 6 transducer number ( 1 = 38 kHz ) 7 tsg1 00+019:23:59:46.976 15A16CFC163F8C2C100 Field Data Units 1 RVDAS Time Tag 2 Seabird Hex string (see notes on converting to real units) 3df1 PBEN: Measurement Data 00+019:23:59:57.054 $PASHR,PBN,345609.00,-1695527.0,-1569301.4,-5925126.0,-068:49.6968,-137:12.8448,00047.7,-000.69,000.67,-000.51,08,????,02,01,02,01*32 Field Data Units 1 RVDAS Time Tag $PASHR 2 PBN 3 GPS Time sec. of the week seconds 4 Station Position: ECEF X meters 5 Station Position: ECEF Y meters 6 Station Position: ECEF Z meters 7 Latitude ( - = South ) deg:min 8 Longitude ( - = West ) deg:min 9 altitude meters 10 velocity in ECEF X m/sec 11 velocity in ECEF Y m/sec 12 velocity in ECEF Z m/sec 13 number of satellites used 14 site name 15 PDOP 16 HDOP 17 VDOP 18 TDOP ATTD: Attitude Data 00+019:23:59:57.854 $PASHR,ATT,345610.0,252.82,+000.52,+001.95,0.0011,0.0068,0 Field Data Units 1 RVDAS Time Tag $PASHR 2 ATT 3 GPS Time sec. of the week seconds 4 heading (rel. to true North) degrees 5 pitch degrees 6 roll degrees 7 Measurement RMS error meters 8 Baseline RMS error meters 9 attitude reset flag GGA: GPS Position Fix - Geoid/Ellipsoid 00+019:23:59:57.134 $GPGGA,235956.00,6849.6968,S,13712.8448,W,1,08,01.0,+00048,M,,M,, Field Data Units 1 RVDAS Time Tag $GPGGA 2 UTC time at position hhmmss.ss 3 Latitude ddmm.mmm 4 North (N) or South (S) 5 Longitude ddmm.mmm 6 East (E) or West (W) 7 GPS quality (1=GPS 2=DGPS) 8 Number of GPS satellites used 9 HDOP 10 Antenna Height meters 11 M for Meters 12 Geoidal height meters 13 M for meters 14 age of diff. GPS data 15 differential reference station ID gyr1 00+019:23:59:59.952 $HEHRC25034,-020*73 Field Data Units 1 RVDAS Time Tag 2 $HEHRC 3 Heading XXXXX = ddd.dd degrees 4 Rate of Change SYYY S = +/-, YYY = r.rr 5 Checksum ngl1 00+019:23:59:59.857 -68.82822,-137.21416,1.10,279.27,251.10,0.00,0.00,0,18.2587,1,1146973 Field Data Units 1 RVDAS Time Tag 2 Latitude (south is negative) degrees 3 Longitude (west is negative) degrees 4 Ship Speed knots 5 Course made good degrees 6 Gyro Heading degrees 7 PDOP 8 HDOP 9 quality 10 GPS up 11 Fix Number PCOD GGA: GPS Position Fix - Geoid/Ellipsoid 00+019:23:59:59.301 $GPGGA,235958.409,6849.6944,S,13712.8472,W,1,06,1.2,092.4,M,047.3,M,,*67 Field Data Units 1 RVDAS Time Tag 2 $GPGGA 3 UTC time at position hhmmss.sss 4 Latitude ddmm.mmm 5 North (N) or South (S) 6 Longitude ddmm.mmm 7 East (E) or West (W) 8 GPS quality (1=GPS 2=DGPS 3=P-CODE) 9 Number of GPS satellites used 10 HDOP 11 Antenna Height meters 12 M for Meters 13 Geoidal height meters 14 M for meters 15 age of diff. GPS data 16 differential reference station ID 17 checksum GLL: GPS Latitude/Longitude 00+019:23:59:59.381 $GPGLL,6849.6944,S,13712.8472,W,235958.409,A*35 Field Data Units 1 RVDAS Time Tag 2 $GPGLL 3 Latitude degrees 4 North or South 5 Longitude degrees 6 East or West 7 UTC of position hhmmss.sss 8 status of data (A = valid) 9 checksum VTG: GPS Track and Ground Speed 00+019:23:59:59.382 $GPVTG,238.7,T,182.3,M,001.8,N,003.3,K*41 Field Data Units 1 RVDAS Time Tag 2 $GPVTG 3 heading degrees 4 degrees True (T) 5 heading degrees 6 degrees magnetic (M) 7 Ship speed knots 8 N = knots 9 speed km/hr 10 K = km per hour 11 checksum adcp 00+019:23:59:59.099 $PUHAW,UVH,-1.48,-0.51,250.6 Field Data Units 1 RVDAS Time Tag 2 $PUHAW 3 UVH (E-W, N-S, Heading) 4 Ship Speed relative to reference layer, East vector kn. 5 Ship Speed relative to reference layer, North vector kn. 6 Ship heading degrees Ocean Data Files ocean/ Some data files are "processed" into a slightly different form. The pCO2 data is merged with data from other sources for ease of data analysis. pCO2-merged 00+019:23:58:15.502 2000019.9983 2445.2 965.0 32.90 52.8 372.3 352.5 -1.27 -68.8285 -137.2080 Equil -68.8280 -137.2079 -1.58 33.60 0.97 9.06 307.23 50.0 Field Data Units 1 RVDAS Time Tag 2 pCO2 Time Tag (decimal is time of day) yyyjdd.fod 3 raw voltage mV 4 barometer mBar 5 cell temperature (C 6 flow rate cm3/min 7 concentration ppm 8 pCO2 pressure microAtm 9 Equilibrated temperature (C 10 Flow Source (Equil = pCO2 measurement) 11 RVDAS latitude degrees 12 RVDAS longitude degrees 13 TSG external temperature (C 14 TSG salinity PSU 15 TSG fluorometry V 16 RVDAS true wind speed m/s 17 RVDAS true wind direction degrees 18 RVDAS barometer mBar 19 uncontaminated seawater pump flow rate l/min 20 Ship's speed over ground kn 21 Ship's course made good ( PROCESSING RAW TSG DATA Raw TSG data is stored as a hex string 20 bytes long. Bytes Data 1-4 Sensor Temperature 5-8 Conductivity 9-14 Remote Temperature 15-17 Fluorometer voltage 18-20 unused voltage In all of the formulas listed below, the variables can be found in the TSGcal file. Calculating Temperature T = decimal equivalent of bytes 1-4 Temperature Frequency: f = T/19 +2100 q = ln(fo/f) Temperature = 1/{a + b * q + c * q2 + d * q3} -273.15 (degrees C) Calculating Conductivity C = decimal equivalent of bytes 5-8 Conductivity Frequency f = sqrt(C*2100+6250000) Conductivity = (afm +bf2 +c +dt)/[10(1+ep)] (siemens/meter) note e = epsilon in the TSGcal file Calculating Fluorometry Voltage f = decimal equivalent of bytes 15-17 Fluorometry Voltage = f/819 Additional & Supplemental Files Additional Files Data volume 2 contains a directory called ADDITION. This directory contains data files that that were created by science groups on NBP0103. The files and their descriptions are as follows: 0103ESS.tar BIOMAPER Data 0103MET.tar Weather information. NBP0103 Sensors Shipboard Sensors Sensor Description Serial # Cal. Date Status Port Anemometer Belfort 5-122AHD 2133 4/12/01 collect Stbd Anemometer Belfort 5-122AHD 7956 6/23/98 collect Barometer Atmospheric Instr. AIR-DB-3A 7G3095 7/21/00 collect Mast PRR BSI PRR-610 9696 3/18/99 not collect UW PRR BSI PRR-600 9695 3/18/99 not collect Rel. Hum./Air Temp Rotronics MP-101A-C4 R45618 6/20/00 collect. Mast PAR QSR-240 6356 2/15/01 collect GUV Biospherical Instruments 9228 3/15/00 collect P-Code GPS Trimble 20636-00 (SM) PCD/CIV Attitude GPS Ashtech 12 700273F2114 FW 7B13-D1-C21 collect Pyranometer Eppley PSP 33090F3 11/7/00 collect Pyrgeometer Eppley PIR 33023F3 7/23/98 collect Dry Air Temp R. M. Young 41342C 2267 10/1/99 collect TSG SeaBird SBE21 218091-857 7/2/01 collect TSG Remote Temp SeaBird 3-01/S 2593 01/03/01 collect Magnetometer EG&G G-866 off ship Gravimeter Lacoste & Romberg Gravity Meter not collect Bathymetry Simrad EK200 3001 11/1/95 collect Bathymetry Bathy 2000 collect 0103 CTD Sensors: Sensor Description CTD Fish SeaBird model SBE 9+ SN 09510716-0377, w/Paroscientific model 410K-105 pressure sensor SN 58949 CTD Deck Unit SeaBird model SBE 11+ SN 11P7536-0317 Primary Temperature Sensor SeaBird model 3-02/F SN 1457. Last cal 06/28/00. Secondary Temperature Sensor SeaBird model 3-02/F SN 1649. Last cal 06/28/00. Primary Conductivity Sensor SeaBird model 4-02/0 SN 1798. Last cal 06/27/00. Secondary Conductivity Sensor SeaBird model 4C SN 1431. Last cal 07/20/00. Dissolved Oxygen Sensor SeaBird model 13-02-B SN 130243. Last cal 6/27/00. Pressure Sensor Paroscientific 410k-105 SN 58949. Last cal 8/20/99 Underwater PAR Sensor Biospherical Instruments QSP-200L4S. Last cal 8/16/00 Underwater PAR Sensor Biospherical Instruments QSP-200L4S. Last cal 2/28/01 Transmissometer Sea-Tech 25cm 474 (2000m). Fluorometer Chelsea model Mk III Aquatracka SN 088080. Last cal 6/2/00 0103 ROV Sensors: Sensor Description Microcat SeaBird model 37-SM 1024M SN 1265. Last cal 11/9/99 0103 MOCNESS Sensors: Sensor Description Pressure Sensor BESS Moc01 SN 0925. Last cal 9/30/00 Temperature Sensor SeaBird model 3-01/S SN 032691. Last cal 9/27/00 Conductivity Sensor SeaBird model 4C SN 041850. Last cal 05/18/00 Transmissometer WetLabs model CST SN 397DR. Last cal 04/24/00. Dissolved Oxygen Sensor SeaBird model 13-02-B SN 230925. Last cal 09/26/00. Fluorometer WetLabs model AFLT SN 99. Last cal 04/24/00 Acquisition Problems and Events This section lists all known problems with acquisition during this cruise including instrument failures, data acquisition system failures and any other factor affecting this data set. The format is jjj:hh:mm (jjj is Julian day, hh is hour, and mm is minute). All times are in GMT. Start Time End Time Event 116 New Cruise NBP0103 - Argentina 200 Mile Limit: Turn on all logging. 127 13:00 132 18:00 PIR batter failed. Batter replaced, instrument working again. 130 16:38:56 131 PCODE GPS failed. Antenna fixed, GPS working again. 140 20:00 Changed out port windbird for S/N 7956 154 18:15 End Data collection at Argentina's 200 Mile limit. Calibrations Barometer Pyranometer/PSP Radiometer/PIR Gravity Tie Mast Par GUV GUV Thermosalinograph TSG Internal TSG External Temperature/Humidity Sensor Belfort Wind Vector Transmitter CTD Instruments Transmissometer Underwater PAR Sensor Fluorimeter Flourimeter Fluorimeter Fluorimeter SBE 5T Submersible Pump Serial No: 050889 SBE 5T Submersible Pump Serial No:051265 Pressure Sensor Dissolved Oxygen Sensor Serial No: 130327 Conductivity Sensor (Primary) Conductivity Sensor (Secondary) Temperature Sensor (Primary) Temperature Sensor (Secondary) Underwater PAR Sensor (1st five casts) Underwater PAR Sensor (Starting 6th Cast) ROV Sensors Pressure Sensor Conductivity Temperature MOCNESS Calibrations Pressure Sensor Pressure Sensor Temperature Conductivity Dissolved Oxygen C-Star Fluorometer Fluorometer Data Report for NBP0101 RVIB Nathaniel B. Palmer 4 Raytheon Polar Services Corporation United States Antarctic Program Data Report for NBP0101 RVIB Nathaniel B. Palmer Raytheon Polar Services Corporation United States Antarctic Program