LMG01_04 Cruise Data Report 10 April - 5 June 2001 Table of Contents TABLE OF CONTENTS 3 INTRODUCTION 1 ARCHIVE DATA EXTRACTION 2 DISTRIBUTION CONTENTS 3 ADCP 3 CTD 3 MAPS 3 MOCNESS DATA ARCHIVE 4 PUV - GUV 5 ISOBAR CHARTS 6 DATA AND SCIENCE REPORT 6 LMG JGOFS DATA PRODUCTS 6 RVDAS 7 Data File Names and Structures 7 XBT 13 XCTD 13 PROCESSING NOTES 13 LMG01_04 SENSORS 14 ADDITONAL INFORMATION ABOUT SHIPBOARD SENSORS 14 LMG01_04 CTD SENSORS: 15 ACQUISITION PROBLEMS AND EVENTS 16 Introduction The LMG data acquisition systems continuously log data from a suite of instrumentation throughout the cruise. This document describes the format of that data and its location on the distribution CDs. 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 Unix tar archives called lmgjgof1.tar, lmguw.tar, and lmgnav.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. Tar files were created 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: LMG01_04/adcp/pingdata.zip LMG01_04/adcp/Gentoo.zip LMG01_04/calibration/calibration.zip LMG01_04/ctd/plots/plots.zip /Process/process.zip /Raw/raw.zip /Seasave/seasoft.zip LMG01_04/Isobars/isobars.zip LMG01_04/JGOF/lmgjgof.tar LMG01_04/Maps LMG01_04/MOCNESS/Moc1.zip /Moc10.zip /Moccnfg instrument.coeff report/ report.doc report.html report.txt LMG01_04/PUV-GUV/ Csvfiles.zip Graphs.zip Logfiles.zip LMG01_04/rvdas/lmguw.tar DISK 1 LMG01_04/rvdas/lmgnav.tar DISK 2 LMG01_04/XBT/LMG01_04s.zip /LMG01_04e.arj /LMG01_04n.arj /LMG01_04s.arj LMG01_04/XCTD/XCTD.zip utilities/ Winzip Aladdin Stuffit Expander Distribution Contents ADCP Adcp/ The ADCP data set is broken up into files representing 24 hours of data collection. The files are contained in the pingdata.zip archive and are named pingdata.xxx (xxx representing a sequential day number starting from 000). Note that these extensions do NOT represent Julian day numbers. Please refer to the file's creation date. Additionally, Gentoo data is contained in Gentoo.zip. The files are named ADCP2001.xxx (xxx representing the julian day number). 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 Ctd/ process/ (post processed datafiles) raw/ (raw datafiles) plots/ (up & down trace postscript plots) seasoft4.242/ (application for processing ctd data) All CTD data acquired on the cruise can be found within this ctd directory. The data for each station consists of four files archived in the RAW folder. Each filename consists of the station number and extension: either .dat, .con, .bl, or .hdr. The type of data in each file is listed below. .dat Actual cast data in SeaBird format. .bl Information pertaining to the water sampling bottles for each cast. .hdr ASCII "header" containing user specific information for each cast. .con Configuration file used during each cast. .nav Position and time stamp generated at the beginning, bottom and end of the cast. The Data collected was post-processed using seasoft standard processing and is stored in the PROCESS directory. .cnv 'Converted' engineering unit data file b.cnv 'Converted' engineering unit data file with data averaged into pressure bins .ros Scans marked with the bottle fire confirmation bit .btl A summary of the data in the .ros file .asc The data portion of the .cnv converted data file written in ascii .hdr Header file Within the ctd directory, the setup directory contains SeaSoft v4.242, which can be used to replay, display, or manipulate the data. Processing Note: 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. Maps JPG cruise track plots have been produced for this cruise: station1.jpg thru station5.jpg and final maps, with and without CTD points plotted. Additionally, the cruise track file (LMG01_04.trk) is also included and contains the latitude and longitude in one minute intervals. Mocness Data Archive A total of 23 MOC10 and 18 MOC1 hauls were made during this cruise. Each haul's data is recorded in three separate and different text files and one graphics file. The format of each of these is summarized below. "M01" prefix = 1m2 MOCNESS, "M10" prefix = 10m2 MOCNESS. Processed filename *.pro This file contains the processed data for each tow, written in ASCII to disk in a simple configuration, which consists of: Rows 1-5 header information about sensors and the tow Row 6 the column headings (discussed below): time pres echo temp theta sal sigma angle flow hzvel vtvel vol net fluor ptran oxycurrent oxytemp oxygen lat lon Succeeding rows data for each column heading with each value separated by 2 spaces. time Julian day, hours and minutes expressed as decimal pres depth (m) temp temperature degrees C theta potential temperature, formulae from Fofonoff and Millard 1983 sal salinity ppt sigma potential density, formulae from Fofonoff and Millard 1983 angle angle 0-90 flow flow counts 0000-9999 hzvel horizontal velocity (knots) vtvel vertical velocity (m/min) vol seawater volume filtered (m3) net net number fluor fluorescence (0-5 volts) ptran extinction coefficient (0-5 volts) oxycurrent 0-5 volts oxytemp 0-5 volts internal to the probe oxygen dissolved oxygen (ml/l) lat latitude decimal degrees lon longitude decimal degrees Raw filename *.raw This file contains the raw data from the underwater unit. These "*.raw" files can be used in the playback mode to re-process the data (see page 33 MOCNESS instructions), and also serve as the backup in case there are problems with the processed data file. For each tow, data is written (as it appears in the acquisition window) in ASCII to disk in a simple configuration, which consists of: Rows 1-5 header information about sensors and the tow Succeeding rows raw data string formatted thusly: #MN- N1 N2 AA FFFF PPPPP PTPT TTTTTT CCCCCC BBB $GPGLL The fields are as follows and are discussed individually below. - N1 net count, counts of left response switch, 00-99 - N2 net count, counts of right response switch, 00-99 - AA net angle in degrees, 00-99 - FFFF flow counts, 0000-9999. Reset to 0000 with every net response or increment net # button command - PPPPP pressure value, converted to decibars by the deck computer - PTPT a decimal number derived from the temperature sensor in the pressure sensor which is used to improve the pressure calibration - TTTTTT averaged SeaBird temperature period. The frequency from the SeaBird temperature sensor is measured and processed in the NCU to generate the value TTTTTT, a 6-digit decimal number. This number is scaled as follows: (frequency of the temp. sensor)=K/(TTTTTT) where K=1,258,291,200. Software in the deck computer uses this frequency value along with the individual sensor's calibration file to calculate temperature. - CCCCCC averaged SeaBird conductivity period, handled exactly like the temperature frequency and the same scaling factor should be used - BBB battery voltage (divide value by 10) - $GPGLL latitude and longitude in decimal degrees Tab filename *.tab The statistical summary for a given *.pro file. For each net, the following parameters are included: pmin,pmax,pavg minimum,maximum and average depth of net tmin,tmax,tavg minimum,maximum and average temperature of net smin,smax,savg minimum,maximum and average salinity of net amin,amax,aavg minimum,maximum and average angle of net spmin,spmax,spavg minimum,maximum and average horizontal velocity (kt) of net armin,armax,aravg minimum,maximum and average vertical velocity (m/sec) of net #obs total number of observations while net was open vol total seawater volume filtered for net Captured screens, filenames *.jpg This file is a jpeg image of the acquisition software captured at any point during a MOCNESS "flight". The files on this CD reflect the acquisition window at the end of each "flight", immediately prior to ending acquisition. PUV - GUV PUV-GUV/ All GUV files, both binary and ASCII, have been zipped and placed in zip archives called csvfiles.zip and logfiles.zip respectively. The GUV files were converted to CSV (Comma Separated Value) format using the Biospherical Instruments' PUVPROF program. The columnar format of the CSV file is listed below: Field PUV Data Field GUV Data 1 Depth 1 Depth 2 308 U 2 306 U 3 320 U 3 320 U 4 Temp U 4 Temp U 5 MATFL 5 MATFL 6 340 U 6 340 U 7 380 U 7 380 U 8 PAR U 8 PAR U 9 Temp U 9 Temp S 10 308 S 10 300 S 11 Batt S 11 Batt S 12 320 12 320 S 13 340 13 340 S 14 380 14 380 S 15 Gnd 15 Gnd S 16 PAR 16 PAR S 17 K308 18 K320 19 K340 20 K380 21 Kpar 22 Chl 23 Prod Isobar Charts Isobars/ Analysis of mean sea level pressure from the National Center for Environmental Prediction's Medium Range Forecast Model. Updated every 12 hours. Data and Science Report Report/ Copies of this report in MS Word, HTML, and text formats. The weekly science reports in text format may be included upon request of the Principal Investigator. LMG JGOFS Data Products JGOF/ The JGOFS data set consists of a single file produced each day named jg.dat.gz where is the day the data was acquired. The ".gz" extension indicates that the individual files are compressed before archiving. The daily file consists of 22 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. Note: Null, unused, or unknown fields are filled with 9's in the JGOFS data. Additionally, 3 separate QC plots are generated daily by the ET using the JGOFS data set. These plots include TSG and Bathymetry data, meteorological data, and navigation data. The files are called ocean.ps, met.ps, and nav.ps respectively. Field Data Units 01 GMT date dd/mm/yy 02 GMT time hh:mm:ss 03 PCOD latitude (negative is South) Ddd.dddd 04 PCOD longitude (negative is West) Ddd.dddd 05 Ships speed Knots 06 GPS HDOP - 07 Gyro Heading Degrees (azimuth) 08 Course over ground Degrees (azimuth) 09 Mast PAR ?Einsteins/meters2 sec 10 Sea surface temperature (C 11 Not used - 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 - 21 PSP W/m2 22 PIR W/m2 RVDAS rvdas/ RVDAS (Research Vessel Data Acquisition System) was developed at Lamont-Doherty Earth Observatory of Columbia University and has been used on the R/V Maurice Ewing for several years. It was adapted for use on the Nathaniel B. Palmer and her sister ship, the R/V Laurence M. Gould. 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 lmet continuous 1 sec R. M. young 41372VC Relative Humidity lmet continuous 1 sec R. M. young 41372VC Wind Speed/Direction lmet continuous 1 sec R. M. young 5106 PIR (LW radiation) lmet continuous 1 sec Eppley PIR PSP (SW radiation) lmet continuous 1 sec Eppley PSP Photosynthetically- Available Radiation lmet continuous 1 sec BSI QSR-240 Barometer lmet continuous 1 sec R. M. young 61201 Navigational Data Measurement File ID Collect. Status Rate Instrument Attitude GPS lash continuous 1 sec Ashtec ADU-2 P-Code GPS lpcd continuous 1 sec Trimble 20636-00SM Gyro lgyr continuous 0.2 sec Yokogawa Gyroscope Trimble GPS tgps continuous 1 sec NT200 Geophysical Data Measurement File ID Collect. Status Rate Instrument Bathymetry lknu variable Varies Knudsen 320B/R Oceanographic Data Measurement File ID Collect. Status Rate Instrument Salinity ltsg continuous 15 sec SeaBird 21 Sea S Temperature ltsg continuous 15 sec SeaBird 3-01/S Fluorometry (analog) ltsg continuous 15 sec Turner 10-AU-005 ADCP ladc 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 tar files, lmguw.tar and lmgnav.tar exist under the top-level rvdas directory. The instruments are broken down as shown. Each data file is g-zipped 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: LMG[FileID].dDDD. * The FileID is a 4-character code representing the system being logged, for example: lmet (for meteorology) * DDD is the Julian day of the data collection Underway Data File ID Navigation Data File ID Meteorolical lmet Gyro Compass lgyr Knudsen lknu P-CODE GPS lpcd Thermosalinograph ltsg Ashtech ADU2 GPS lash ADCP ladc Trimble NT2100 GPS tgps Sound Velocity Probe lsvp 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 lknu 99+099:00:18:19.775 hf,305.2,lf,304.3 Field Data Units 1 RVDAS Time Tag 2 hf - high frequency flag (12 kHz) 3 high fequency depth meters 4 lf - low frequency flag (3.5 kHz) 5 low frequency depth meters lmet 00+040:00:00:00.928 16-10-97 00:01:19 005.53 005.53 005.69 145 141 005.15 005.12 005.15 146 148 004.4 004.4 004.4 94.07 94.06 94.07 0981.40 -0.023 00.292 00.315 Field Data Units 1 RVDAS Time Tag 2 Instrument date dd-mm-yy 3 Instrument time hh:mm:ss 4 Port wind speed (10 second running average) m/s 5 Port wind speed (min for 24 hour cycle) m/s 6 Port wind speed (max for 24 hour cycle) m/s 7 Port wind direction degrees 8 Port wind direction (standard deviation) degrees 9 Starboard wind speed (10 second running average) m/s 10 Starboard wind speed (min for 24 hour cycle) m/s 11 Starboard wind speed (max for 24 hour cycle) m/s 12 Starboard wind direction degrees 13 Starboard wind direction (standard deviation) degrees 14 Temperature (C 15 Temperature (min for 24 hour cycle) (C 16 Temperature (max for 24 hour cycle) (C 17 Relative humidity % 18 Relative humidity (min for 24 hour cycle) % 19 Relative humidity (max for 24 hour cycle) % 20 Barometric pressure millibars 21 PSP (long wave radiometer) Volts 22 PIR (short wave radiometer) Volts 23 PAR (photo-synthetically available radiation, 400 - 700 nm) Volts svp1 00+348:01:59:52.128 1539.40 Field Data Units 1 RVDAS Time Tag 2 Sound velocity m/s ltsg 00+040:00:00:06.153 6926 15.8827 0.2010 2.9218 3.239 4.334e-01 Field Data Units 1 RVDAS Time Tag 2 Scan number 3 Internal water temperature (C 4 Salinity PSU 5 External water temperature (C 6 Transmissometer signal Volts 7 Fluorometer signal (analog) Volts ladc 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 layer1 velocity2, East vector knots 5 Ship Speed relative to reference layer1 velocity2, North vector knots 6 Ship heading degrees 1The reference layer is an average velocity measured in a number of depth "bins". On the LMG, the bins are eight meters deep and bins 3-10 define the reference layer. Hence, the reference layer is the water column from 16-80 meters beneath the ship. 2The speed ouput is water velocity relative to the ship's hull and is therefore opposite of the actual movement of the ship. For example, if the ship's heading is due north, the North/South reference layer velocity is likely to be negative (southerly). lash ATTD: Attitude Data 01+081:00:00:00.806 $PASHR,ATT,345605.0,165.03,+001.86,-01.96,0.0018,0.0173,0*22 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 Measuremnet RMS error meters 8 Baseline RMS error meters 9 attitude reset flag GGA: GPS Position Fix - Geoid 01+081:00:00:00.966 $GPGGA,235952.00,6051.7937,S,06030.2175,W,1,08,01.0,+00068,M,,M,,*79 Field Data Units 1 RVDAS Time Tag $GPGGA 2 $GPGGA, NEMA sentence label 3 UTC time at position hhmmss.ss 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) 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 seconds 16 differential reference station ID lgyr 01+155:00:00:00.106 $IIVHW,001.2,T,,M,,N,,K*78 01+155:00:00:00.286 $HEHDT,001.2,T*2C 01+155:00:00:00.486 $HEROT,004.3,A*2C 01+155:00:00:00.665 $HCHDT,,T*07 01+155:00:00:00.885 $PASVW,06.0,A*1A HDT: True Heading 01+083:00:00:02.893 $HEHDT,246.3,T*2C Field Data Units 1 RVDAS Time Tag $HEHDT 2 Heading XXXXX = ddd.d degrees 3 T flag for true heading, checksum ROT: Rate of Turn 01+083:00:00:03.093 $HEROT,-006.3,A*03 Field Data Units 1 RVDAS Time Tag $HEROT 2 Rate of turn degrees/min 3 Status: A = data valid, checksum tgps GGA: Global Positioning Fix Data 00+040:00:00:00.985 $GPGGA,000003,6139.961,S,05949.422,W,1,6,001.64,-00036,M,00000,M,, Field Data Units 1 RVDAS Time Tag $GPGGA 2 Latitude in degrees with decimal minutes ddmm.mmm 3 North (N) or South (S) 4 Longitude in degrees with decimal minutes ddmm.mmm 5 East (E) or West (W) 6 GPS quality (1=GPS 2=DGPS) 7 Number of GPS satellites used 8 Horizontal dilution of precision (HDOP) 9 Antenna height above/below mean-sea-level (geoid) meters 10 Units for antenna height (M = Meters) 11 Geoidal Separation1 12 Units for Geoidal Separation (M = Meters) meters 13 Age of differential GPS data, number of seconds since last SC104 Type 1 or 9 14 Differental reference station ID 1Geoidal Separation: the difference between the WGS-84 earth ellipsoid and mean-sea-level (geoid). A negative value represents mean-sea-level below ellipsoid. GLL: Geographic Position - Latitiude/Logitude 00+040:00:00:00.065 $GPGLL,6139.96,S,05949.42,W,000002,A Field Data Units 1 RVDAS Time Tag $GPGLL 2 Latitude ddmm.mmm 3 North (N) or South (S) 4 Logitude ddmm.mmm 5 East (E) or West (W) 6 UTC of position hhmmss.ss 7 Status: A = Data Valid VTG: Track Made Good and Speed over Ground 00+040:00:00:00.213 $GPVTG,161,T,149,M,009.6,N,017.8,K Field Data Units 1 RVDAS Time Tag $GPVTG 2 Track, degrees true degrees 3 T flag for True 4 Track, degrees magnetic degrees 5 M flag for Magnetic 6 Speed over Ground knots 7 N flag for Knots 8 Speed over Ground kmhr 9 K flag for km/hr VHW: Speed Through Water and Heading 00+040:00:00:00.212 $GPVHW,246,T,234,M,012.3,N,022.8,K Field Data Units 1 RVDAS Time Tag $GPVHW 2 Heading, degrees True degrees 3 T flag for True 4 Heading, degrees Magnetic degrees 5 M flag for Magnetic 6 Speed through water knots 7 N flag for Knots 8 Speed through water km/hr 9 K flag for km/hr ZDA: Time and Date 00+040:00:00:00.285 $GPZDA,000002,09,02,2000,00,00 Field Data Units 1 RVDAS Time Tag $GPZDA 2 UTC time hhmmss.ss 3 Day: 01 - 31 dd 4 Month: 01 - 12 mm 5 Year yyy 6 Local time zone description1, 00 +/-13 hrs 7 Local time zone minutes description, same sign as local hours 1Zone description is the number of whole hours added to local time to obtain GMT, values are negative for East longitudes. BWC: Bearing and Distance to Waypoint 00+040:00:00:00.865 $GPBWC,000003,6209.70,S,05824.00,W,127.2,T,115.3,M,050.1,N,014 Field Data Units 1 RVDAS Time Tag $GPBWC 2 UTC of bearing hhmmss.ss 3 Destination waypoint latitude in degrees, decimal minutes ddmm.mmm 4 Hemisphere Flag: N or S 5 Destination waypoint longitude in degrees, decimal minutes ddmm.mmm 6 Hemisphere Flag: E or W 7 Bearing, degrees true degrees 8 T flag for True 9 Bearing, degrees magnetic degrees 10 M flag for Magnetic 11 Distance to waypoint in nautical miles nm 12 N flag for Nautical Miles 13 Waypoint ID lpcd 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 $GPGGA 2 UTC time at position hhmmss.sss 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 3=P-CODE) 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 Null field 15 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 $GPGLL 2 Latitude degrees 3 North or South 4 Longitude degrees 5 East or West 6 UTC of position hhmmss.sss 7 staus of data (A = valid) 8 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 $GPVTG 2 Heading degrees 3 degrees True (T) 4 Heading degrees 5 degrees magnetic (M) 6 Ship speed knots 7 N = knots 8 Speed km/hr 9 Checksum XBT XBT/ During the cruise Expendable Bathythermographs were used to obtain water column temperature profiles. The data files from these launches are included. XCTD XCTD/ During the cruise Expendable CTDs were used to obtain water column temperature profiles. The data files from these launches are included. Processing Notes Refer to the instrument.coeff file, included in the root level of the data distribution, along with the specific instrument calibration sheets, found at the end of this report, for information on how the RVDAS data was processed. LMG01_04 Sensors The most recent calibration sheets for CTD Instrumentation, Mast Radiometer Instrumenation, and TSG Instrumenation have been included on the CD in the Cal/ directory. These are scanned image files of the hard copy calibration sheets. A key to match filenames to instruments is shown below. TSG Primary Temperature (Internal) Tsg_temp.jpg TSG Secondary temperature (Sea Water Intake) Rem_temp.gif TSG Conductivity Tsg_Cond.jpg Underway Transmissometer UW_Trans.gif CTD Primary Temperature Pri_Temp.jpg CTD Secondary Temperature Sec_Temp.jpg CTD Primary Conductivity Pri_Cond.jpg CTD Secondary Conductivity Sec_Cond.jpg CTD Primary Pump Pri_Pump.jpg CTD Secondary Pump Sec_Pump.jpg CTD PAR CTD_Par.jpg CTD Transmissometer CTD_Trans.jpg CTD Dissolved Oxygen CTD_Ox.jpg CTD Fluorometer CTD_fluor.jpg CTD Fish CTD_fish.jpg Mast PAR Mast_PAR.jpg Mast PSP Mast_PSP.jpg Mast PIR Mast_PIR.jpg MOC1 Depth MOC_149.jpg. MOC10 Depth- initial MOC_139.txt MOC10 Depth- after 139 failed MOC_148.jpg Port Anemometer Portanem.jpg Starboard Anemometer Stbdanem.jpg Barometer Barometr.jpg Humidity/Wet Temperature Humidity.jpg GUV GUVa.jpg GUVb.jpg Additonal information about Shipboard Sensors Sensor Description Serial # Cal. Date Status Port Anemometer R.M. Young 105106 VM35061 04/15/01 collect Stbd Anemometer R.M. Young 105106 VM28393 04/15/01 collect Barometer R.M. Young 61201 BP00873 11/30/99 collect Humidity/Wet Temp R.M. Young 41372VC 4018 11/07/01 collect Mast PAR BSI QSR-240 6393 03/22/99 Pyranometer Eppley PSP 28933F3 07/26/00 collect Pyrgeometer Eppley PIR 28903F3 07/26/00 collect GUV Biospherical GUV-511 9266 11/08/00 TSG SeaBird SBE21 2110410-1789 02/11/00 collect TSG Remote Temp SeaBird 3-01/S 1620 1/4/00 collect Fluorometer Turner 10-AU-005 Lamp: daylight 10-045, reference filter: 10-052, emission filter: 10-051, excitation filter: 10-050. 6046RTD collect Transmissometer WET Labs 9707017 CST-168R 11/30/00 collect P-Code GPS Trimble 20636-00 (SM) 220035265 04/01/01 PCD/CIV Bathymetry Knudsen 320B/R K97715 LMG01_04 CTD Sensors: Sensor Description Serial # Cal. Date Status CTD Fish Sea-Bird 9Plus-3400m 91480 6/8/99 CTD Deck Unit Sea-Bird 11Plus 111411 CTD Deck Unit- spare Sea-Bird 11Plus 11P8908-0288 Prim. Temp. Sensor Sea-Bird 3-02/F 2444 1/30/01 Sec. Temp. Sensor Sea-Bird 3-02/F 1542 1/19/01 Prim. Cond. Sensor Sea-Bird 4-02/0 692 8/22/00 Sec. Cond. Sensor Sea-Bird 4C 2048 8/22/00 Diss. Oxygen Sensor Sea-Bird 13-02-B 130412 5/4/00 Fluorometer Chelsea model Mk III Aquatracka 088211 3/3/99 Transmissometer Wet-Labs C-Star 25cm CST-407DR 11/16/00 PAR Biospherical QSP-200L4S 4470 7/31/00 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. 1) 110 23:00 start cruise 2) 110 23:25 power on to SONAR 3) 111 01:00 SONAR off 4) 111 ??SONAR on 5) 111 12:00 ADCP on 6) 111 12:10 Discovered that Ashtech is not working- shut down ADCP 7) 111 12:45 Cyclone locked up- rebooted 8) 111 13:25 Ashtech reset- came back up 9) 111 13:36 ADCP re-started 10) 111 13:38 Noticed that SVP did not re-initialize when Cyclone re-booted- restarted it. 11) 112 13:40 Turned off bottom tracking on ADCP 12) 112 13:54 Deployed drifter buoy 30053 13) 112 ~08:45 Started XBT run 14) 113 04:47 Deployed drifter buoy 30052 15) 113 05:15 Started TSG-58 04.2 S Lat 62 43.2 W Lon- (at 200 mi. limit) First 7 scans had no water running- oops 16) 113 22:43 started GUV after resetting Calibration factors 17) 114 12:55 Turned Bottom tracking on for ADCP 18) 114 ~13:20 Arrive Maxwell Bay, King George Island 19) 114 19:19 shutdown Knudsen for Biofish tests 20) 114 19:21 shutdown ADCP for Biofish testing 21) 114 19:38 Re started Knudsen 22) 114 21:48 Ships power off- All systems seem OK except TSG 23) 114 22:03 TSG back on watch data- due to pump shutdown 24) 114 23:24 Ships power off- All systems seem OK except TSG 25) 114 23:28 TSG back on watch data- due to pump shutdown 26) 115 06:30-08:45 Knudsen lost bottom due to shallower water than TX blank 27) 115 10:15-12:45 Knudsen lost bottom due to shallower water than TX blank 28) 116 00:30 Switched Knudsen from 3.5kHz to 12 kHz for noise reasons 29) 116 00:56 Stopped ADCP computer to backup files 30) 116 01:08 Stopped logging on Gentoo 31) 116 01:27 Re-started ADCP 32) 117 Changed SONAR back to 3.5kHz for JGOFs- noticed in QC scripts that changing the SONAR not only causes the JGOF's to display 9999 for depth, but also causes seawater temp to go to zero? The data is still being correctly collected by the TSG and written to /data/not-public/logger/uw/LMGltsg.day, but for some reason JGOF's displays 0. 33) 117 11:41 Shutdown TSG - arrived at Palmer Station 34) 117 11:44 Shutdown ADCP 35) 117 11:52 Shutdown SONAR 36) 117 19:30 shutdown GUV for testing 37) 117 19:45 restarted GUV 38) 117 20:00 cleaned GUV lens, PIR, PSP and PAR sensors 39) 118 17:10 Re-start SONAR- depart palmer Station 40) 118 17:13 Re-start ADCP 41) 118 17:20 Re-started TSG 42) 119 11:28 Stopped logging on GUV to double check values-set time to 10 minute intervals 43) 119 11:31 Restarted logging on GUV 44) 120 22:30 Stopped Knudsen for ADCP survey termination 45) 120 22:48 Restarted Knudsen 46) 120 23:56 Stopped ADCP for data backup 47) 121 00:14 Restarted ADCP 48) 121 00:19 Stopped GUV deck unit for data backup 49) 121 00:29 Restarted GUV 50) 122 18:06 Stopped ADCP to copy files 51) 122 18:09 Restarted ADCP 52) 122 Problem with 12 hour Isobars resolved. Now receiving 2X per day. 53) 126 17:08 Stopped ADCP to copy files 54) 126 17:37 Restarted ADCP 55) 128 00:59 Stopped ADCP for HTI trouble shooting. 56) 128 01:04 Restarted ADCP, Stopped Knudsen SONAR 57) 128 01:06 Restarted Knudsen SONAR 58) 128 13:04 Stopped ADCP to copy files 59) 128 13:14 Restarted ADCP 60) 128 23:53 Stopped GUV logging to back up files 61) 129 00:10 Restarted GUV logging. 62) 129 01:23 Changed GUV logging interval from 10 minutes to 1 minute. 63) 129 18:23 Stopped ADCP to copy files 64) 129 18:39 Restarted ADCP 65) 131 17:58 Stopped ADCP to copy files 66) 131 18:13 Restarted ADCP 67) 131 ~19:20 Cleaned PIR, PAR, PSP, and GUV on mast. 68) 134 00:38 Stopped GUV logging to check data. 69) 134 00:40 Restarted GUV logging. 70) 134 ~10:00 Port Windbird speed and direction data stream died. Believed to be the electronics module. 71) 134 16:29 Stopped ADCP to copy files 72) 134 16:36 Restarted ADCP 73) 134 15:03 TSG logging shut down by an unknown cause or person. 74) 134 15:00 GUV logging was shut down by unknown cause or person. 75) 134 16:50 I restarted the TSG upon noticing that it was off. 76) 134 16:59 Shut down MET to change port wind module. 77) 134 17:47 restarted MET, wind direction is now working but wind velocity is still bad. PAR came loose during replacement. Re-wired, but possible bad readings. 78) 134 18:19 Shut down MET system to check wiring on PAR. Output is 0.000V 79) 134 19:05 Restarted MET system. 80) 134 19:30- 19:53 pulled PAR signal and gnd wires from back of MET module. Looked at voltages and found 0.9V DC, which the Manufacturer cites as the level for background noise. Repeatedly removed and re-installed the wires during this time. Unfortunately it is now too dark to tell if 0.000V is accurate or not. Will watch reading tomorrow. 81) 134 22:01 Noticed that Port wind speed seems to be working again. Bridge said it happened about 21:00. PAR OK as well. 82) 134 23:59 TSG and MET off. Today I discovered that several calibration constants reflected previously installed sensors. On Cyclone, the /usr/local/packages/rvdas/config/instrument.coeff file had not been updated when the mast sensors were installed. Specifically, I changed the PIR coefficient from 3.86 to 3.57, the PSP coefficient from 8.85 to 8.23 and the transmissometer Vdark from 0.062 to 0.058 and the Vref from 4.781 to 4.801. Additionally, I changed the calibration coefficients for the underway TSG. Specifically, I changed the Conductivity factors from the values for 1577: to the values for 1789: g = -3.94145559e+00 g = -4.04904711e+00 h = 4.69434689e-01 h = 4.83917250e-01 i = 1.49060769e-03 i = 9.06133798e-04 j = -4.31070264e-05 j = -1.37490237e-05 The primary temperature was already correct, but the secondary temp had to be updated from 1619: to 1620: g = 4.79514050e-03 g = 4.79485872e-03 h = 6.68331805e-04 h = 6.68466216e-04 i = 2.95597429e-05 i = 2.97709921e-05 j = 2.79206188e-06 j = 2.84551361e-06 I saved the new config file as lmg0104b.con; the old one being lmg0104.con. 83) 135 00:29 Restart RVDAS135 84) 135 00:31 SV Probe stopped working. 85) 135 01:05 restarted the SV Probe 86) 137 00:58 Noticed that GUV logging had been shut off. Also noticed that the date was two days behind. I changed the date from 5/15/01 to 5/17/01. Looked for signs that the date had been off previously, but found none. I believe that the date was not incremented during the period that the GUV was off. 87) 137 01:00 Restarted logging on GUV 88) 137 13:33 Turned off H2O to UW transmissometer to clean lenses 89) 137 13:45 Turned on H2O to transmissometer- big jump in Transmission %. 90) 137 13:49 Turned off H2O to UW flourometer to clean 91) 137 13:51 Turned on H2O to flourometer 92) 137 19:15 Cleaned CTD transmissometer lenses 93) 139 02:52 Ashtech stopped logging for unknown reasons 94) 139 08:00 CTD deck unit #111411 failed at start of cast # 43. Replaced with spare. #11P8908-0288 95) 139 23:25 Turned off GUV logging to backup files 96) 139 23:27 Turned GUV logging back on. 97) 139 23:32 Changed PUV logging back to minutely. It had reverted to every 10 minutes when it was shut down. 98) 140 ~02:00 to 03:19 RVDAS shutdown and restarted several times in an attempt to fix the Ashtech. 99) 140 03:19 Ashtech fixed - re-started logging. 100) 142 16:57 Cleaned PAR, PIR, PSP, GUV 101) 144 00:00 Turned off GUV logging to backup files 102) 144 00:08 Turned on GUV logging 103) 144 15:00 CTD deck unit again failed due to buffer overrun. Problem traced to SPAR. 104) 144 22:16 Stopped ADCP for data backup 105) 144 Restarted ADCP 106) 145 02:30 Ashtech failed. This time only for 2 minutes before it recovered. 107) 145 13:00 Gentoo locked up and had to be restarted. No ADCP logging. 108) 145 13:26 Gentoo restarted and ADCP logging recommenced. 109) 148 16:00 Stopped logging on ADCP to back up files 110) 148 16:15 Restarted logging. 111) 151 04:35 PUV Off- Arrival at Palmer Station 112) 151 04:37 TSG off 113) 151 04:40 ADCP off 114) 151 12:50 SONAR off 115) 151 17:09 SONAR on 116) 151 17:54 ADCP on 117) 151 Turned TSG on and noticed that the transmissometer readings were low, (in the 30's). I had cleaned the lenses during the stop at Palmer so I thought maybe there was soap left on the lenses or something. I re-cleaned them and was still getting low and variable readings. I then removed the cable and cleaned the contacts. After re- connecting the readings were still low but more believable. (mid to high 70s) 118) 151 18:36 Finished cleaning contacts and re-connected cable to Transmissometer. 119) 151 18:46 ADCP was not logging to RVDAS system so I shut it down. 120) 151 18:59 Found that problem was due to incorrect Ue4.cnf file sent by Teri Chereskin. She had the speed logging turned off on COM2. ADCP restarted. 121) 151 19:33 ADCP stopped for Meng Zhou to look at files 122) 151 20:15 Re-started ADCP 123) 152 23:40 Shutdown TSG at 200 mile limit 124) 152 22:58 ADCP Bottom tracking back on 125) 155 02:07 Ashtech failed again 126) 155 02:43 Ashtech restarted 127) 155 18:11 Stopped ADCP at mouth of Straight of Magellan 128) 155 18:39 Stopped all data collection and ended cruise. 16 Data Report for LMGLMG01_04 R/V Laurence M. Gould 2 Raytheon Polar Services United States Antarctic Program Data Report for LMGLMG01_04 RVIB Nathaniel B. Palmer Raytheon Polar Services United States Antarctic Program