Files in the Dataset have been checked for format consistency, and merged into a single, integrated, downloadable file.
Download Entire Dataset Submit Data For This Cruise How to Cite DatasetFiles listed here are the most recent version submitted by the cruise scientists, but have not yet been checked for consistency and merged into the main Dataset. They are provided "as is". If you are unsure of which files to use, stick to the Dataset files above.
These files are not yet in the Dataset.
| Filename (Download) | Size | Date Submitted |
| 09AR20141205_woceexchange_version01.csv | 646.9 kB | 2020-08-17 |
| 09AR20141205_woceexchange_version01.csv | 661.3 kB | 2020-08-13 |
| au1402.zip | 7.8 MB | 2020-08-18 |
| 09AR1402_woceexchange_version11oct2017.zip.gz | 4.8 MB | 2020-08-26 |
| 09AR20141205.exc.csv | 861.1 kB | 2021-03-29 |
I started with the file recently submitted by Bronte and Steve. This version contains an edited header, format corrections and QC of alll bottle variables. There are several odd flag errors in the original and few QC frlag changes. Suggest that you take this this file as a start point.
TOTTEN/DALTON/MOSCOW UNIVERSITY ICESHELF REGION, MERTZ REGION and SR3 TRANSECT,
VOYAGE AU1402 (i.e. 09AR1402) CTD and BOTTLE DATA
-------------------------------------------------------------------------------
- data version 9th May 2017, WHPO "exchange" format
Here's the latest version of the CTD and Niskin bottle data for
voyage au1402 (i.e. 09AR1402) (Totten/Dalton/Moscow university Iceshelf region,
Mertz region, and southern end of SR3 transect),
Aurora Australis Voyage 2 2014/2015, 5th Dec 2014 to 25th Jan 2015.
NOTE: all data here are finalised
The data originators (ACE CRC, Australia) should be acknowledged in any publication,
including internal reports, published reports, journal articles, presentations etc.
The following reference can be used for the data:
Rosenberg, M. and Rintoul, S. (unpublished) Aurora Australis Marine Science Cruise AU1402,
Totten and Mertz CTD's and Moorings - oceanographic field measurements and analysis.
ACECRC, Hobart, 2015 unpublished report, 69 pp.
The above data report, in the file a1402.pdf, gives important details on data processing and
data quality.
Please do not distribute these data without this README file.
Thanks very much.
regards,
Mark Rosenberg
ACECRC
mark.rosenberg@utas.edu.au
The CTD stations are as follows:
1 TEST
2-82 TOTTEN/DALTON/MOSCOW UNIVERSITY ICESHELF REGION
83-133 MERTZ REGION
134-141 SR3
Data files:
*.ctd = CTD 2 dbar data
*.sea = bottle data
*.sum = station information
TOTTEN AND MERTZ VOYAGE AU1402 CTD and BOTTLE DATA - data version 2nd June 2015
--------------------------------------------------
Here's the latest version of the CTD and Niskin bottle data for voyage au1402
(Totten/Dalton plus Mertz region), Aurora Australis Voyage 2 2014/2015, 5th Dec 2014
to 25th Jan 2015.
The data originators ACE CRC Australia should be acknowledged in any publication,
including internal reports, published reports, journal articles, presentations etc.
The following reference can be used for the data:
Rosenberg, M. and Rintoul, S. (unpublished) Aurora Australis Marine Science Cruise AU1402,
Totten and Mertz CTD's and Moorings - oceanographic field measurements and analysis.
ACECRC, Hobart, 2015 unpublished report, 69 pp.
The above data report, in the file a1402.pdf, gives important details on data processing and
data quality.
Please do not distribute these data without this README file.
Thanks very much.
regards,
Mark Rosenberg
mark.rosenberg@utas.edu.au
The CTD stations are as follows:
1 TEST
2-82 TOTTEN/DALTON REGION
83-133 MERTZ REGION
134-141 SR3
CTD DATA
--------
* SeaBird CTD 704 was used for the entire cruise.
* CTD data are in text files named *.all, containing 2-dbar data.
An example of file naming convention:
a14024010.all - a = Aurora Australis
14 = year of first CTD
02 = cruise number (i.e. voyage 2 in this case)
4 = CTD instrument number
010 = CTD cast number
* Post-processed bathymetry data for the cruise are included in the
file headers and station data file. All bottom depths are corrected
for the local sound speed at each station.
* The CTD 2 dbar files consist of a 15 line header with station info,
followed by the data in column format, as follows:
column 1 - pressure (dbar)
column 2 - temperature (degrees C, T90 scale)
column 3 - conductivity (mS/cm)
column 4 - salinity (PSS78)
column 5 - dissolved oxygen (umol/l)
column 6 - fluorescence (manufacturer supplied calibration giving
units ug/l)
column 7 - photosynthetically active radiation (PAR) (manufacturer supplied
calibration giving units uEinsteins/m2.sec)
column 8 - transmittance (% transmittance, referenced to clean water value)
column 9 - number of data points used in the 2 dbar bin
column 10 - fluorescence, upcast data
column 11 - PAR, upcast data
column 12 - transmittance, upcast data
column 13 - number of data points used in the 2 dbar bin, upcast data
* CTD data are all 2 dbar averaged values, for each even valued pressure bin.
* columns 2 to 9 are downcast data; columns 10 to 13 are upcast data
(both downcast and upcast data are supplied for fluorescence, PAR and transmittance).
* All files start at 2 dbar, and there is a line for each 2 dbar bin.
Any missing data are filled by the null value -9.0
* Temperature/conductivity/salinity data are from the primary temperature
and conductivity sensor pair for all CTD casts.
* Station information contained in the headers is described below in the
section on station data, with the addition of:
lastbin = deepest 2 dbar pressure bin (dbar) for the cast
pressure (dbar) at the minimum altimeter value
local sound speed (m/s) used for correction of bottom depths
* Note that all oxygen values are volumetric (i.e. umol/l).
* Note that deeper fluorescence data are slightly negative in value,
due to the calibration coefficients supplied.
* Note that maximum transmittance values are slightly less than the
expected 100%, due to a small calibration error.
BOTTLE DATA
-----------
* All bottle oxygen data are finalised
* Note that all nutrient and oxygen values are volumetric (i.e. umol/l).
* The bottle data (hydrochemistry) are contained in the a1402.bot text file, with the
following columns:
column 1 - cast number
column 2 - ctd pressure (dbar)
column 3 - ctd temperature (deg. C, T90 scale)
column 4 - null data (i.e. -9.0)
column 5 - ctd conductivity (mS/cm)
column 6 - ctd salinity (PSS78)
column 7 - bottle salinity (PSS78)
column 8 - phosphate (umol/l)
column 9 - nitrate (umol/l) (i.e. total nitrate+nitrite)
column 10 - silicate (umol/l)
column 11 - bottle dissolved oxygen (umol/l)
column 12 - bottle flag (1=good,0=suspicious,-1=bad, relevant to
salinity values for CTD calibration i.e. not applicable to other bottle data)
column 13 - niskin bottle number
column 14 - ctd fluorescence (units as per CTD note above)
column 15 - ctd photosynthetically active radiation (PAR) (units as per CTD note above)
column 16 - ctd transmittance (units as per CTD note above)
* Columns 2, 3, 5, 6, 14, 15 and 16 are all the averages of CTD upcast burst data
(i.e. averages of the 10 seconds of CTD data from 5 seconds prior to 5 seconds after each bottle firing).
Temperature, conductivity and salinity data are from the primary sensor pair.
* Any missing data are filled by the null value -9.0
STATION INFORMATION
-------------------
A summary of the station information is contained in the a1402.sta file
(this station information is also included in the matlab file a1402.mat).
All times are UTC. The data columns for each cast are:
CTD cast number
date (dd Mmm yyyy), start of downcast
time (hhmmss), start of downcast
latitude (degrees and decimal minutes), start of downcast
longitude (degrees and decimal minutes), start of downcast
water depth (m), start of downcast
time (hhmmss), bottom of cast
latitude (degrees and decimal minutes), bottom of cast
longitude (degrees and decimal minutes), bottom of cast
water depth (m), bottom of cast, calculated from pressure and altimeter at bottom of cast
time (hhmmss), end of cast
latitude (degrees and decimal minutes), end of cast
longitude (degrees and decimal minutes), end of cast
water depth (m), end of cast
altimeter (m) - minimum altimeter value
maximum pressure (dbar) for the cast
decimal time, start of downcast
decimal time, bottom of downcast
decimal time, end of downcast
* All times are UTC
* Decimal times are decimal days from 2400 on 31st Dec. 2013 (so, for example,
midday on 2nd January 2015 = decimal time 366.5).
* Any missing values are filled by a blank
MATLAB FORMAT
-------------
* In the matlab files, column number for each array corresponds with CTD cast number.
* In the matlab files, NaN is a null value.
* In the matlab CTD file, profiles are padded down to 4400 dbar.
* In the matlab bottle file, the rows 1 to 24 are the shallowest to deepest Niskins respectively.
* CTD data are in matlab format in the file a1402.mat, which includes station info.
The array names have the following meaning:
all times are UTC
"start" refers to start of cast
"bottom" refers to bottom of cast
"end" refers to end of cast
"dectime" is decimal days from 2400 on 31st Dec. 2013 (so, for example,
midday on 2nd January 2015 = decimal time 366.5).
"lat" is latitude (decimal degrees, where -ve = south)
"lon" is longitude (decimal degrees, where +ve = east)
"time" is hhmmss time
"botd" is ocean depth (m)
maxp = maximum pressure of the CTD cast (dbar)
lastbin = deepest 2 dbar pressure bin (dbar) for the cast
ctdunit = instrument serial number
"ctd" is the CTD 2dbar averaged data, for the parameters:
cond=conductivity (mS/cm)
fluoro=fluorescence
npts=number of data points used in the 2 dbar bin
ox=dissolved oxygen (umol/l)
par=photosynthetically active radiation
press=pressure (dbar)
sal=salinity (PSS78)
temp=temperature (deg.C T90)
trans=transmittance
fluoro_up=upcast fluorescence
par_up=upcast photosynthetically active radiation
trans_up=upcast transmittance
npts_up=upcast version of npts
date is ddmmyyyy date
altimeter = minimum altimeter value (m)
press_alt = pressure (dbar) at the minimum altimeter value
* Bottle data are also in matlab format in the file called a1402bot.mat,
which includes some of the station info.
The array names have the following meaning:
"ctdbot" refers to upcast CTD burst data, for the parameters:
cond=conductivity (mS/cm)
fluoro=fluorescence
par=photosynthetically active radiation
press=pressure (dbar) (also in array hyd_press)
sal=salinity (PSS78)
temp=temperature (deg.C T90)
trans=transmittance
"hyd" refers to bottle data, for the parameters:
ox=dissolved oxygen (umol/l)
sal=salinity (PSS78)
flag = the bottle flag described under the bottle data section
niskin = niskin bottle number
nitrate (i.e. total nitrate+nitrite),phosphate,silicate = umol/l
station = CTD cast number
note that hyd_press is the same as ctdbot_press
WOCE EXCHANGE FORMAT - xxxnot done yetxxx
--------------------
CTD and bottle data are also available on request in WOCE "Exchange" format, as follows:
*.ctd = CTD data
a1402.sea = bottle data
a1402.sum = station information
* All oxygen and nutrient data in these files are in gravimetric units (i.e. umol/kg).
* Any missing data are filled by the null value -999.0
BRIEF DATA QUALITY NOTES
------------------------
* The following CTD 2 dbar data are suspect (not removed from the data files)
(this same information is in the file sussctd.dat):
stn parameter pressure (dbar) comment
--- --------- --------------- ---------
54 temp/cond/sal/ox 2-18 sensors possibly frozen
94 ox 4-20 possibly high by ~6umol/l
* Bad salinity bottle samples are listed in the file:
badsalbtl.dat
* The following nutrient data are suspect (not removed from the data files)
(this same information is in the file sussnut.dat):
phosphate
---------
stn Niskin bottle
18 5 low by ~3.5%
37 17,9 low by ~3%
54 5 low by ~2.5%
62 15 low by ~3%
79 24,1 low by ~3%
90 5 low by ~2%
141 2 low by ~2%
nitrate
-------
stn Niskin bottle
- -
silicate
--------
stn Niskin bottle
- -
* For Antarctic shelf data (stn 1-133), when lowering or raising of the CTD slowed down
in regions of significant vertical structure, high variability was at times evident in the profile data.
Examples of this are sensor spikes near the bottom of stations 50, 55 and 72.
This variability was also evident as sensor drift during bottle stops. In all these cases
any unusual features can be seen in both the primary and secondary sensor data, however
the primary and secondary sensor data mismatch is more than usual. Possible reasons are:
- highly variable ocean structure (more likely)
- sensor time constants (possible contributor)
- interference from ice crystals forming as the CTD slows (speculative)
These data are not flagged as suspect, but are perhaps at the limit what the CTD can accurately
measure in a highly variable environment.
* Many shelf stations were taken around highly variable bottom topography, and in a few cases
(e.g. stations 3 and 114) a mismatch occurred between bottom depth from the 12 kHz sounder and
bottom depth as measured by the CTD (i.e. pressure at bottom of cast + altimeter reading).
Clearly the CTD does not always lie in the measurement cone of the sounder; and bottom picking
of sounder data (during the quality control) can be difficult in highly variable topography.
* 2 dbar upcast fluorescence and transmittance data do not always match the fluorescence and
transmittance upcast 10 sec burst data - due to the difference between 2 dbar and
10 second averageing on what is often highly featured data.
* A full data report is in the file a1402.pdf.
submitted this on 13 August and cleaned up the file header information a bit. This only fixes a couple of issues with The comments following # at teh file beginning and teh data remains the same. http://cchdo.ucsd.edu/submit/confirm/eb32800d-1356-4be5-8de5-4c135253f81c
We thought this was submitted. The attached has final carbon data added to the referenced CTD data