Dataset: HRR 2017 CTD

Name: CTD profile data from R/V Pt. Sur PS 18-09 Legs 01 and 03, Sept. - Oct. 2017
Published: 2020-04-15
Keywords: oceans

Cite This Dataset

DOI:10.26008/1912/bco-dmo.809428.1

Spatial Extent: N:29.4907 E:-93.5325 S:27.0932 W:-97.2683

Temporal Extent: 2017-09-23 - 2017-10-01

Project:

RAPID: Hurricane Impact on Phytoplankton Community Dynamics and Metabolic Response (HRR)

Principal Investigator:

Lisa Campbell (Texas A&M University, TAMU)

Anthony Knap (Texas A&M University, TAMU)

Co-Principal Investigator:

Steven DiMarco (Texas A&M University, TAMU)

Darren W. Henrichs (Texas A&M University, TAMU)

Contact:

Steven DiMarco (Texas A&M University, TAMU)

BCO-DMO Data Manager:

Nancy Copley (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Version:

Version Date:

2020-04-15

Restricted:

Validated:

Yes

Current State:

Final no updates expected

CTD profile data from R/V Pt. Sur PS 18-09 Legs 01 and 03, Sept. - Oct. 2017

Abstract:

Processed CTD profile data from all electronic sensors mounted on rosette from R/V Pt. Sur PS 18-09 Legs 01 and 03, Hurricane Harvey RAPID Response cruise (western Gulf of Mexico) September-October 2017.

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Archival Copy

Version Date	Archive	Persistent Identifier (PID)	Date PID Issued
2020-04-15	Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)	10.26008/1912/bco-dmo.809428.1	2021-01-11

Description

Methods & Sampling

Raw hex datafiles were produced by the CTD were processed using manufacturer-supplied software, Seabird SeaSave. SBE Data Processing Version 7.26.6.28 was used to process the raw Sea-Bird CTD data (.hex) into a human-readable format (.cnv). The order of functions ran via SBE Data Processing was:

1. Data Conversion: to convert hex-files into human readable format;
2. Filter: apply low-pass filter to collected data;
3, Align CTD: to temporally align T and C sensors. Time constant equals 3.5 s (Gulf of Mexico);
4. Cell Thermal Mass: applies thermal mass correct;
5. Loop Edit: to remove effects of ship heave;
6. Derive: to estimate derived quantities such as salinity, density, dissolved oxygen concentration, potential temperature, etc; and
7. Bin Average: average data into vertical bins, downcast only.

See zipped metadata of individual files for date of calibration and calibration coefficients - Supplemental Files, below.

Data Processing Description

BCO-DMO Processing Notes:
- added conventional header with dataset name, PI name, version date
- modified parameter names to conform with BCO-DMO naming conventions (e.g., replaced spaces and hyphens with underscores)
- extracted filename, date-time, lat, and lon from individual file headers
- converted date-time to ISO_DateTime_UTC
- converted lat and long from degrees/min/sec to decimal degrees
- extracted the HHR leg number and station id from the file_name to separate columns
- concatenated all .cnv data into a single file
- joined CTD data with header data (file_name, leg, station, ISO_DateTime_UTC, lat, lon)
- removed columns of raw voltages V3, V4, V5

Data Files

File
HRR_ctd_2017.csv (Comma Separated Values (.csv), 1.53 MB) MD5:9c266f1521750453d2e6bda3a80b141f Primary data file for dataset ID 809428

Supplemental Files

File
Original processed SeaBird .cnv files, PS18-09 leg 01 filename: HRRLEG1_CTD_FINAL.zip (ZIP Archive (ZIP), 789.84 KB) MD5:d4608b0503dd43891e5f989b350a5d11 Zipped file containing the original processed SeaBird .cnv files from PS18-09 leg 01, including the sensor calibration information
Original processed SeaBird .cnv files, PS18-09 leg 03 filename: HRRLEG3_CTD_FINAL.zip (ZIP Archive (ZIP), 90.94 KB) MD5:f73fb6affd76916c1c32d8d02030dda0 Zipped file containing the original processed SeaBird .cnv files from PS18-09 leg 03, including the sensor calibration information

More Information about this dataset

Funding Sources

Funding Source	Award Number
NSF Division of Ocean Sciences	OCE-1760620
NSF Division of Ocean Sciences	OCE-1760381

Deployments

Deployment	Synonyms	Start Date	Platform	Investigator
PS1809	HRR PS18-09	2017-09-22	R/V Point Sur	Lisa Campbell (Chief Scientist) Steven DiMarco (Chief Scientist)	data info

Instruments

CTD Sea-Bird SBE 911plus

Supplied Name: CTD system (11plus V 5.2)

Supplied Description:

These sensors were deployed with the CTD:
Temperature sensor (Channel 1; S/N: 5134)
Conductivity (Channel 2; S/N: 2922)
Digiquartz pressure sensor (Channel 2; S/N: 45)
Temperature Sensor (Channel 4; S/N: 4488)
Conductivity (Channel 5; S/N: 2629)
Dissolved oxygen (Channel 6; SBE-43; S/N: 0174)
Dissolved oxygen (Channel 7; SBE-43; S/N: 3554)
CDOM Fluorometer (Channel 8; WetLABS ECO, S/N:1379)
Chlorophyll Fluorometer (Channel 9; WetLABS ECO-AFL, S/N: 1051)
Altimeter (Channel 10; S/N 27002)
PAR (Channel 12; Biospherical/Licor/Chelsea PAR/Irradiance, S/N: 4530)
Transmissometer (Channel 13, WetLabs C-Star, S/N: CST-703DR)
SPAR Surface Irradiance (Channel 15, S/N: 20148)

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

Parameters

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

Supplied Name	Supplied description	Supplied Units	Standard Name
file_name	name of the originators file	unitless	flag
HHR_leg	cruise leg identifier	unitless	leg
station	station identifier	unitless	station
lat_decdeg	latitude with positive values indicating North	decimal degrees	lat
lon_decdeg	longitude with negative values indicating West	decimal degrees	lon
ISO_DateTime_UTC	Date and time in UTC following ISO8601 format	yyyy-MM-dd'T'HH:mm:ss'Z'	ISO_DateTime_UTC
prDM	Pressure	decibar (db)	press
t090C	Temperature ITS-90	degrees Celsius (C)	temp
t190C	Temperature 2 ITS-90	degrees Celsius (C)	temp
c0S_m	Conductivity	Siemens per meter (S/m)	cond
sal00_1	Practical Salinity	PSU	sal
sal11	Practical Salinity	PSU	sal
sbeox0V	Oxygen raw SBE 43 from primary sensor	volts (V)	O2_v
sbeox0ML_L_1	Oxygen SBE 43 from primary sensor	milliliters per liter (ml/l)	O2
sbeox1V	Oxygen raw SBE 43 from secondary sensor	volts (V)	O2_v
sbeox1ML_L_1	Oxygen SBE 43 from secondary sensor	milliliters per liter (ml/l)	O2
cpar	CPAR/Corrected Irradiance	percent (%)	PAR
CStarAt0	Beam Attenuation; WET Labs C-Star	per meter (1/m)	beam_cp
CStarTr0	Beam Transmission; WET Labs C-Star	percent (%)	trans
par	PAR/Irradiance Biospherical/Licor	unknown	PAR
wetCDOM	Fluorescence; WET Labs CDOM	milligrams/meter^3 [mg/m^3]	CDOM
flECO_AFL	Fluorescence; WET Labs ECO-AFL/FL	millligrams/meter^3 [mg/m^3]	CDOM
depSM	Depth in salt water at specified latitude	meters (m)	depth
sal00_2	Practical Salinity	Practical Salinity Units (PSU)	sal
sigma_e00	Density sigma-theta	kilogram per meter cubed (kg/m3)	sigma_0
sbeox0ML_L_2	Oxygen SBE 43 from primary sensor; WS=5 (?)	milliliters per liter (ml/l)	O2
sbeox1ML_L_2	Oxygen SBE 43 from secondary sensor; WS=5 (?)	milliliters per liter (ml/l)	O2
potemp090C	Potential temperature fro ITS-90	degrees Celsius	potemp
potemp190C	Potential temperature fro ITS-190	degrees Celsius	potemp
flag	data quality flag; 0 indicates good value	unitless	flag

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Database

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Dataset: HRR 2017 CTD