Hydrographic data and water samples were collected at standard CTD stations: CTD profiles measurements (down casts) with water sampling (up casts). The CTD rosette was equipped with a SBE 911 plus CTD system, conductivity, temperature and pressure sensors (SeaBird Electronics), WetLabs ECO-AFL/FL fluorometer, WET Labs ECO-NTU turbidity sensor, Sea-Bird SBE 43 dissolved oxygen sensor, photosynthetically active radiation (PAR) sensor and also surface radiation (SPAR) sensor.
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Location: New England Shelfbreak 40 S 71 W, depth 0-2000m
This dataset was not cleaned to remove outliers. See processing notes below about missing data identifiers.
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Sea-Bird Software used for AR29 data:
\nData acquisition: SBE Seasave, version 7.23.2
\nData processing: SBE Data Processing, version 7.26.7.114
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Sea-Bird Software used for RB1904 and TN368 data:
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Data acquisition: SBE Seasave, version 7.26.7.107
\nData processing: SBE Data Processing, version 7.26.7.114
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Bad data is indicated with a flag:
\nBad data flag=-9.990e-29
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BCO-DMO Processing Notes (Data Version 1, 2020-03-27, AR29):
\n- submission contained ctd casts of cruise AR29 with numbers [133-143]
\n- added conventional header with dataset name, PI name, version date
\n- modified parameter names to conform with BCO-DMO naming conventions
\n- converted latitude and longitude coordinates to decimal degrees in the lat and lon columns
\n- concatenated all downcast seabird data files into one dataset.
\n- added ISO_DateTime_UTC field
\n- converted values indicated in seabird files as bad (-9.990e-29) to nd.
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Dataset Version 2 (2021-04-20) replaces Dataset Version 1 (2020-03-27).
\n- This dataset update was made to add data from TN368 data in 2019.
\n- Imported seabrid .cnv files from TN368 and reimported the .cnv files from AR29 into the BCO-DMO data system. Imported the AR29 files again in this version instead of using the data from the previous version 1 of this dataset because temperature data t090C and t190C for cast 134 between depths 110 to 120 was not imported correctly in the version 1 data. It appears to have been an error when uploading the fixed with seabird file.
\n- Combined all the data into one table with additional columns for Cruise and Cast from information in the file names.
\n- As was done in version 1 of this dataset, the NMEA Lat, Lon and Time (UTC) in the seabird header was used as the data source for columns lat, lon, and ISO_DateTime_UTC.
\n- lat,lon rounded to 5 decimal places.
\n- column names renamed to match version 1 of this dataset which conform to the BCO-DMO naming conventions.
\n- Only -9.990e-29 was interpreted as a missing data identifier. These values will be displayed differently based on the file type downloaded by the user. It will be blank values in .csv files, NaN in matlab files, etc.
\n- The data submitter indicated this dataset was not cleaned for outliers. The following values are in this dataset: 90e-29, 9.0E-28,9.90E-27, 9.90E-27,-9.990e-29, 990e-29, 1.0000E-12. CPar data in AR29 cast 143 had some values: 9.2221E-13, 9.1837E-13, 9.2295E-13, 9.2564E-13, 9.2370E-13
\n- Data sorted by datetime then pressure (prDM).
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Dataset Version 3 (2021-09-28) replaces Dataset Version 2 (2021-04-20).
\n- This dataset update was made to add CTD casts from AR29 cruise (added cast 001-011, 022-040, 047-068, and 079-095).
\n- Imported newly submitted seabird .cnv files from AR29 and imported the existing .csv from v2.
\n- Combined all the data into one table with additional columns for Cruise and Cast from information in the file names.
\n- As was done in version 1 & 2 of this dataset, the NMEA Lat, Lon and Time (UTC) in the seabird header was used as the data source for columns lat, lon, and ISO_DateTime_UTC.
\n- lat,lon rounded to 5 decimal places (same as v2)
\n- column names renamed to match version 2 of this dataset which conform to the BCO-DMO naming conventions
\n- Only -9.990e-29 was interpreted as a missing data identifier. These values will be displayed differently based on the file type downloaded by the user. It will be blank values in .csv files, NaN in matlab files, etc.
\n- Data sorted by datetime then pressure (prDM)
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BCO-DMO data manager notes version 4 (replaces version 3)
\n- merged all available ctd cast .cnv files for all 3 cruises
\n- converted latitude and longitude to decimal degrees
\n- As was done in version 1, 2 & 3 of this dataset, the NMEA Lat, Lon and Time (UTC) in the seabird header was used as the data source for columns lat, lon, and ISO_DateTime_UTC.