Dataset: BH15-11 CTD

Name: Processed CTD data from BH15-11 from R/V Blue Heron cruise BH15-11 in the western arm of Lake Superior in August 2015
Published: 2017-07-20
Keywords: oceans

Cite This Dataset

DOI:10.1575/1912/bco-dmo.708293.1

Spatial Extent: N:47.332 E:-89.8223 S:46.7502 W:-91.9442

Temporal Extent: 2015-08-26 - 2015-08-28

Project:

Calibration of a Novel Nutrient Paleoproxy in the Southern Ocean (Novel Nutrient Paleoproxy)

EAGER - Introducing Early Career Scientists to Research on the Great Lakes (Early Career Great Lakes research)

Principal Investigator:

Tristan J. Horner (Woods Hole Oceanographic Institution, WHOI)

BCO-DMO Data Manager:

Shannon Rauch (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Version:

Version Date:

2017-07-20

Restricted:

Validated:

Yes

Current State:

Final no updates expected

Processed CTD data from BH15-11 from R/V Blue Heron cruise BH15-11 in the western arm of Lake Superior in August 2015

Abstract:

Processed CTD data from BH15-11 from R/V Blue Heron cruise BH15-11 in the western arm of Lake Superior in August 2015.

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Archival Copy

Version Date	Archive	Persistent Identifier	Date Assigned
2017-07-20	Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)	10.1575/1912/bco-dmo.708293.1	2019-08-02

Description

Processed CTD data from BH15-11.

Related publications:Horner, T. J., Pryer, H. V., Nielsen, S. G., Crockford, P. W., Gauglitz, J. M., Wing, B. A., & Ricketts, R. D. (2017). Pelagic barite precipitation at micromolar ambient sulfate. Nature Communications, 8(1). doi:10.1038/s41467-017-01229-5

Methods & Sampling

CTD casts were conducted using using a Sea-Bird SBE 9 and SBE 11plus V 5.0. The CTD rosette included: WET Labs WETstar, SBE43 (oxygen), WET Labs CDOM, WET Labs C-Star, and Biospherical/Licor sensors. Data were processed (data conversion, filter, loop edit, bin average, ascii out) using Seasave V 7.23.2.

Notes:
- These data include both the up and down cast at each station. Because Niskin bottles were fired at certain depths on the upcasts, "nbin" values may be very high at those depths (because the CTD sat at depth for a longer period of time).
- Cast 002.01 was aborted due to a transmissometer issue.

Also see: Cast logs from cruise BH15-11 (PDF).

Data Processing Description

Example SeaSave processing, from cast 005.01:
# datcnv_date = Aug 28 2015 08:22:28, 7.23.2 [datcnv_vars = 17]
# datcnv_in = C:\Users\Tech\Desktop\Seasave\Raw\CTD_2015\BH15-11\005.01.hex C:\Users\Tech\Desktop\Seasave\Raw\CTD_2015\BH15-11\005.01.XMLCON
# datcnv_skipover = 0
# datcnv_ox_hysteresis_correction = yes
# datcnv_ox_tau_correction = yes
# filter_date = Aug 28 2015 08:23:15, 7.23.2
# filter_in = C:\Users\Tech\Desktop\Seasave\Converted Data\005.01.cnv
# filter_low_pass_tc_A = 0.150
# filter_low_pass_tc_B = 0.150
# filter_low_pass_A_vars = prDM
# filter_low_pass_B_vars =
# loopedit_date = Aug 28 2015 08:26:05, 7.23.2
# loopedit_in = C:\Users\Tech\Desktop\Seasave\Filter\005.01f.cnv
# loopedit_minVelocity = 0.100
# loopedit_surfaceSoak: do not remove
# loopedit_excl_bad_scans = yes
# binavg_date = Aug 28 2015 08:26:48, 7.23.2
# binavg_in = C:\Users\Tech\Desktop\Seasave\Loop Edit\005.01fle.cnv
# binavg_bintype = meters
# binavg_binsize = 1
# binavg_excl_bad_scans = yes
# binavg_skipover = 0
# binavg_surface_bin = no, min = 0.000, max = 0.000, value = 0.000
# file_type = ascii

BCO-DMO Processing Notes:
- Modified parameters names to conform with BCO-DMO naming conventions;
- Created ISO_DateTime field from dates in CTD .hdr files;
- Added column for "station_name".

Data Files

File
ctd_BH1511.csv (Comma Separated Values (.csv), 563.28 KB) MD5:033b0f966d71ccc14d9a74cf7099f60b Primary data file for dataset ID 708293

Supplemental Files

File
BH15-11_CTD_Cast_sheets.pdf (Portable Document Format (.pdf), 1.49 MB) MD5:cd8dfd6fab1ec295514c222f9e9104e7 BH15-11_CTD_Cast_sheets.pdf

More Information about this dataset

Funding Sources

Funding Source	Award Number
NSF Division of Ocean Sciences	OCE-1443577
NSF Division of Ocean Sciences	OCE-1430015

Deployments

Deployment	Synonyms	Start Date	Platform	Investigator
BH15-11		2015-08-26	R/V Blue Heron		data info

Instruments

CTD Sea-Bird SBE 911plus

Supplied Name: Sea-Bird SBE 9 and SBE 11plus V 5.0

Supplied Description:

Instrument Type

Generic Name: CTD Sea-Bird SBE 911plus

Acronym: CTD SBE 911plus

Community Identifier: http://vocab.nerc.ac.uk/collection/L22/current/TOOL0058/

Generic Description:

The Sea-Bird SBE 911 plus is a type of CTD instrument package for continuous measurement of conductivity, temperature and pressure. The SBE 911 plus includes the SBE 9plus Underwater Unit and the SBE 11plus Deck Unit (for real-time readout using conductive wire) for deployment from a vessel. The combination of the SBE 9 plus and SBE 11 plus is called a SBE 911 plus. The SBE 9 plus uses Sea-Bird's standard modular temperature and conductivity sensors (SBE 3 plus and SBE 4). The SBE 9 plus CTD can be configured with up to eight auxiliary sensors to measure other parameters including dissolved oxygen, pH, turbidity, fluorescence, light (PAR), light transmission, etc.). more information from Sea-Bird Electronics

CTD-fluorometer

Supplied Name: WET Labs CDOM

Supplied Description:

Instrument Type

Generic Name: CTD-fluorometer

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/113/

Generic Description:

A CTD-fluorometer is an instrument package designed to measure hydrographic information (pressure, temperature and conductivity) and chlorophyll fluorescence.

LI-COR Biospherical PAR Sensor

Supplied Name: Biospherical/Licor

Supplied Description:

Instrument Type

Generic Name: LI-COR Biospherical PAR Sensor

Acronym: LI-COR Biospherical PAR

Community Identifier: http://vocab.nerc.ac.uk/collection/L22/current/TOOL0074/

Generic Description:

The LI-COR Biospherical PAR Sensor is used to measure Photosynthetically Available Radiation (PAR) in the water column. This instrument designation is used when specific make and model are not known.

Sea-Bird SBE 43 Dissolved Oxygen Sensor

Supplied Name: SBE 43

Supplied Description:

Instrument Type

Generic Name: Sea-Bird SBE 43 Dissolved Oxygen Sensor

Acronym: SBE-43 DO

Community Identifier: http://vocab.nerc.ac.uk/collection/L22/current/TOOL0036/

Generic Description:

The Sea-Bird SBE 43 dissolved oxygen sensor is a redesign of the Clark polarographic membrane type of dissolved oxygen sensors. more information from Sea-Bird Electronics

WET Labs {Sea-Bird WETLabs} C-Star transmissometer

Supplied Name: WET Labs C-Star

Supplied Description:

Instrument Type

Generic Name: WET Labs {Sea-Bird WETLabs} C-Star transmissometer

Acronym: WL CSTAR Trans

Community Identifier: http://vocab.nerc.ac.uk/collection/L22/current/TOOL0160/

Generic Description:

The C-Star transmissometer has a novel monolithic housing with a highly intgrated opto-electronic design to provide a low cost, compact solution for underwater measurements of beam transmittance. The C-Star is capable of free space measurements or flow-through sampling when used with a pump and optical flow tubes. The sensor can be used in profiling, moored, or underway applications. Available with a 6000 m depth rating.

More information on Sea-Bird website: https://www.seabird.com/c-star-transmissometer/product?id=60762467717

WETLabs WETStar fluorometer

Supplied Name: WET Labs WETstar

Supplied Description:

Instrument Type

Generic Name: WETLabs WETStar fluorometer

Community Identifier: http://vocab.nerc.ac.uk/collection/L22/current/TOOL0075/

Generic Description:

Submersible fluorometer designed for through-flow or pumped CTD applications manufactured by WetLabs and which can be configured for various types of fluorescence. The probe has a temperature range of 0-30 degrees C and a depth rating of 600m.

Parameters

Date and time formats are described in python strftime() syntax.

Supplied Name	Supplied description	Supplied Units	Standard Name
cast	Cast identier. Composed of station + cast (e.g. 002.01 = station 2, cast 1).	unitless	cast
lat_start	Latitude at start of cast; obtained from .hdr files	decimal degrees	lat_start
lon_start	Longitude at start of cast; obtained from .hdr files	decimal degrees	lon_start
ISO_DateTime_UTC	Time and date formatted to ISO 8601 standard (yyyy-mm-ddTHH:MM:SS); obtained from .hdr files	unitless	ISO_DateTime_UTC
PrDM	Pressure, Digiquartz	decibars (db)	press
DepFM	Depth (fresh water)	meters (m)	depth
T090C	Temperature [ITS-90]	degrees Celsius	temp
C0uS_cm	Conductivity	microsiemens per centimeter (uS/cm)	cond
Specc	Specific conductance	microsiemens per centimeter (uS/cm)	specc
WetStar	Fluorescence measured by WET Labs WETstar	milligrams per cubic meter (mg/m3)	fluor
Sbeox0Mg_L	Oxygen measured by SBE43	milligrams per liter (mg/L)	O2
WetCDOM	Fluorescence measured by WET Labs CDOM	milligrams per cubic meter (mg/m3)	fluor
CStarTr0	Beam transmission measured by WET Labs C-Star	percent (%)	trans
Par	PAR/Irradiance measured by Biospherical/Licor	microEinsteins per square centimeter per second (ueinsteins/cm2-sec)	PAR
Orp	Oxidation reduction potential	millivolts (mV)	no_bcodmo_term
Ph	pH	unitless (pH scale)	pH
Dz_dtM	Descent rate	meters per second (m/s)	descent_rate
TimeS	Elapsed time	seconds	time_elapsed
AltM	Altimeter	meter (m)	altitude
Latitude	Latitude	decimal degrees	lat
Longitude	Longitude	decimal degrees	lon
Nbin	Number of scans per bin	unitless	nbin
Flag	0.000e+00 (bad flag = -9.990e-29)	unitless	flag
station_name	Name commonly used to refer to the station	unitless	sta_name

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