CTD profiles from 2012 to 2019 in the Gulf of Maine

Website: https://www.bco-dmo.org/dataset/843463
Data Type: Cruise Results
Version: 1
Version Date: 2021-03-05

Project
» WHCOHH - Physiological and behavioral plasticity in harmful algal bloom dynamics: variation across different habitats (WHCOHH Algal Bloom Dynamics)

Program
» Woods Hole Center for Oceans and Human Health (WHCOHH)
ContributorsAffiliationRole
McGillicuddy, Dennis J.Woods Hole Oceanographic Institution (WHOI)Principal Investigator
Keafer, BruceWoods Hole Oceanographic Institution (WHOI)Co-Principal Investigator
Kosnyrev, OlgaWoods Hole Oceanographic Institution (WHOI)Data Manager
Soenen, KarenWoods Hole Oceanographic Institution (WHOI BCO-DMO)BCO-DMO Data Manager

Abstract
CTD profiles from 2012 to 2019 in the Gulf of Maine.


Coverage

Spatial Extent: N:44.983 E:-66.113 S:41.528 W:-70.793
Temporal Extent: 2012-05-23 - 2019-08-12

Methods & Sampling

Sea-Bird SBE 9 CTD data measurements using Sea-Bird Software SBE Seasave at standard CTD stations: profiles (down casts) with water sampling (up casts).


Data Processing Description

Sea-Bird Software SBE Data Processing. All CTD profiles have been binned using 1db pressure bin.

Station numbers ending with .2 are station named with with "a" at the end (usually this is second cast at the same location when primary cast failed for some reason).

BCO-DMO Processing notes:

  • Adjusted station numbers (everything ending with .0 to integer) to join with location file
  • Concatenated all ctd files, added file names as Cruise IDs
  • Adjusted headers to comply with database requirements
  • Rounded fields to 3 and 4 decimales
  • Converted dates to ISO format

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Data Files

File
ctd_profilesd_all.csv
(Comma Separated Values (.csv), 7.58 MB)
MD5:f9daf175bb6c05a95a870a5f32981e04
Primary data file for dataset ID 843463
WHCOHH_CTD_Profiles
filename: CTD_profiles.zip
(ZIP Archive (ZIP), 3.94 MB)
MD5:c0f0fbde8810eef1fe3ceb47c0778538

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Parameters

ParameterDescriptionUnits
Cruise_IDcruise identifier unitless
Station_NumberStation number unitless
LatitudeLatitude degN
LongitudeLongitude degW
ISO_DateTime_UTCSampling ISO DateTime UTC time zone unitless
TimeElapsedElapsed time sec
PrDMPressure db
T090CTemperature degC
C0Conductivity S/m
WetStarFluorescence 1 mg/m^3
Sbeox0VRaw oxygen V
Sal00Salinity unitless
SigmaASigma-theta density kg/m^3
Sbeox0Dissolved oxygen concentration ml/L
pHpH unitless
flECO_AFLFluorescence 2 mg/m^3
TransBeam transmission percentage (%)
AltMAltimetry m
PARPAR/Irradiance microEinsteins/m^2/second
seaTurbMtrTurbidity NTU
sPARSPAR/Surface Irradiance microEinsteins/m^2/second
WetStarVFluorescence 1 voltage V


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Instruments

Dataset-specific Instrument Name
SBE 43 Dissolved Oxygen Sensor
Generic Instrument Name
Sea-Bird SBE 43 Dissolved Oxygen Sensor
Generic Instrument 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

Dataset-specific Instrument Name
Digiquartz
Generic Instrument Name
Pressure Sensor
Generic Instrument Description
A pressure sensor is a device used to measure absolute, differential, or gauge pressures. It is used only when detailed instrument documentation is not available.

Dataset-specific Instrument Name
SeaBird 911+ Rosette 24-position, 10-liter bottle Rosette with dual T/C sensors
Generic Instrument Name
CTD Sea-Bird SBE 911plus
Dataset-specific Description
SeaBird 911+ Rosette 24-position, 10-liter bottle Rosette with dual T/C sensors At each station, CTD casts measured temperature, salinity and PAR. Water samples collected at depths of 300, 250, 200, 150, 120, 100, 80, 60, 40, 30, 20, 10 m, and the surface were filtered and preserved for nutrient analysis.  
Generic Instrument 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

Dataset-specific Instrument Name
Seapoint Turbidity
Generic Instrument Name
Seapoint Turbidity Meter
Generic Instrument Description
The Seapoint Turbidity Meter detects light scattered by particles suspended in water, generating an output voltage proportional to turbidity or suspended solids.

Dataset-specific Instrument Name
WET Labs WETstar Fluorometer
Generic Instrument Name
WETStar CDOM Fluorometer
Dataset-specific Description
These low cost, low power optical sensors provide comparable performance to other fluorometers at a fraction of their cost, power requirements, and size. The WETStar uses a novel optical flow design that allows for both pump-through and flow-through applications. It is easily mated with CTD packages. Provides calibrated, high-resolution (60 Hz signal and 1 Hz average) chlorophyll-a measurement of mechanically stimulated bioluminescence to assess water column ecosystem dynamics. The potted optics block results in long term stability of the instrument and the optional anti-biofouling technology delivers truly long term field measurements. more information from Wet Labs
Generic Instrument Description
The WETStar CDOM fluorometer measuring fluorescence as a proxy for dissolved matter absorption.


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Deployments

CT2015-01

Website
Platform
R/V Connecticut
Start Date
2015-05-07
End Date
2015-05-07

CT2015-04

Website
Platform
R/V Connecticut
Start Date
2015-08-06
End Date
2015-08-07

CT2016-01

Website
Platform
R/V Connecticut
Start Date
2016-05-03
End Date
2016-05-05

CT2016-02

Website
Platform
R/V Connecticut
Start Date
2016-07-19
End Date
2016-07-20

CT2018-01

Website
Platform
R/V Connecticut
Start Date
2018-04-30
End Date
2018-05-02

CT2018-02

Website
Platform
R/V Connecticut
Start Date
2018-07-18
End Date
2018-07-19

CT2019-01

Website
Platform
R/V Connecticut
Start Date
2019-06-12
End Date
2019-06-17

CT2019-02

Website
Platform
R/V Connecticut
Start Date
2019-07-09
End Date
2019-07-11

CT2019-03

Website
Platform
R/V Connecticut
Start Date
2019-08-13
End Date
2019-08-13

GC2016-01

Website
Platform
R/V Gulf Challenger
Start Date
2016-10-05
End Date
2016-10-07

TI603

Website
Platform
R/V Tioga
Start Date
2012-05-23
End Date
2012-05-25

TI606

Website
Platform
R/V Tioga
Start Date
2012-06-11
End Date
2012-06-11

TI623

Website
Platform
R/V Tioga
Start Date
2012-08-04
End Date
2012-08-05

TI661

Website
Platform
R/V Tioga
Start Date
2013-04-28
End Date
2013-04-28

TI667

Website
Platform
R/V Tioga
Start Date
2013-05-14
End Date
2013-05-16

TI670

Website
Platform
R/V Tioga
Start Date
2013-05-30
End Date
2013-05-31

TI672

Website
Platform
R/V Tioga
Start Date
2013-06-12
End Date
2013-06-13

TI677

Website
Platform
R/V Tioga
Start Date
2013-07-08
End Date
2013-07-09

TI691

Website
Platform
R/V Tioga
Start Date
2013-08-03
End Date
2013-08-07

TI747

Website
Platform
R/V Tioga
Start Date
2014-05-02
End Date
2014-05-03

TI751

Website
Platform
R/V Tioga
Start Date
2014-05-20
End Date
2014-05-22

TI752

Website
Platform
R/V Tioga
Start Date
2014-06-06
End Date
2014-06-06

TI758

Website
Platform
R/V Tioga
Start Date
2014-06-15
End Date
2014-06-17

TI762

Website
Platform
R/V Tioga
Start Date
2014-07-10
End Date
2014-07-12

TI770

Website
Platform
R/V Tioga
Start Date
2014-07-25
End Date
2014-07-27

TI813

Website
Platform
R/V Tioga
Start Date
2015-06-17
End Date
2015-06-18

TI817

Website
Platform
R/V Tioga
Start Date
2015-07-07
End Date
2015-07-08

TI831

Website
Platform
R/V Tioga
Start Date
2015-08-02
End Date
2015-08-05

TI906

Website
Platform
R/V Tioga
Start Date
2016-10-20
End Date
2016-10-20

TI972

Website
Platform
R/V Tioga
Start Date
2017-07-17
End Date
2017-07-22

TI978

Website
Platform
R/V Tioga
Start Date
2017-08-09
End Date
2017-08-11

WJ2017-01

Website
Platform
R/V Warren Jr.
Start Date
2017-06-29
End Date
2017-07-01


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Project Information

WHCOHH - Physiological and behavioral plasticity in harmful algal bloom dynamics: variation across different habitats (WHCOHH Algal Bloom Dynamics)


The goal of this project is to identify commonalities and differences in regional bloom dynamics for two key harmful algal bloom (HAB) taxa, Alexandrium fundyense and Pseudo-nitzschia spp. The project’s central hypothesis is that HAB global biogeography and variable bloom and toxin dynamics are determined by a common repertoire of physiological and behavioral responses to environmental forcings and that the ability to understand, forecast, and mitigate HAB events requires a deep understanding of the plasticity of these repertoires within species and between populations. Novel, targeted, efficient, and data-rich in situ sampling paradigms developed with previous WHCOHH funding have revealed numerous unforeseen aspects of A. fundyense dynamics in the Nauset Marsh (NM), a long-studied inshore “model” bloom habitat. It is now clear that accurate rate estimates and behavioral patterns are needed for modeling and forecasting, and that these need to be generated as much as possible through in situ observation, a recognized strength of the WHCOHH.  In this project, the approach includes deployments of a portable, solar-powered observatory platform supporting remotely controlled instruments and profiling capabilities, the centerpiece being the IFCB, a unique autonomous underwater microscope for the in situ detection of rates of growth, accumulation, mortality, and life cycle stage conversions.  Variability in environmental forcing across years and among habitats provides a proxy for future climate scenarios, revealing the responses of these key HAB organisms under natural conditions. These novel observational and analytical approaches will be used to characterize the behaviors and responses of A. fundyense across a range of other habitats and environmental regimes.  They will also be directed towards Pseudo-nitzschia spp., a group that presents a growing public health threat to the northeast U.S. Improved understanding of critical physiological and behavioral features of both taxa are essential for accurate predictions of their climate responses and assessment of short- and long-term human health impacts.



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Program Information

Woods Hole Center for Oceans and Human Health (WHCOHH)


Coverage: Western N. Atlantic, Arctic


NSF Award Abstract

The mission of the Woods Hole Center for Oceans and Human Health is to protect the public health through enhanced understanding of how oceanic and environmental processes including climatic variation affect the population dynamics of toxin producing organisms, and the risks from exposure to their potent neurotoxins. Factors affecting the distribution, survival, proliferation, and toxicity of harmful algal bloom (HAB) species still are poorly known, despite their enormous consequences for human health. Three research projects and two cores comprise the Center. The Center structure will facilitate the integration among projects, and the integration of research with education and community engagement activities. The Center will engage stakeholders, facilitate education on HAB science at many academic levels, and strengthen public knowledge about HAB blooms and their impacts. The Center is jointly supported by NSF and by the National Institute for Environmental Health Sciences (NIEHS).

The research activities of the Center will focus on two key HAB taxa: Alexandrium fundyense that produces the saxitoxins responsible for paralytic shellfish poisoning (PSP), and Pseudo-nitzschia spp. that produce domoic acid responsible for the amnesic shellfish poisoning (ASP) syndrome. Novel, targeted, efficient, and data-rich sampling approaches developed by the applicants and applied in situ have revealed that critical aspects of A. fundyense dynamics in natural settings differ dramatically from those inferred from laboratory studies, indicating plasticity in response to climate. The research proposed will build on these new and fundamental insights into what regulates blooms, and on the Center's established strengths in ocean observation technologies and modeling, to predict how environmental variables may influence population dynamics of known and emerging HAB threats. Hindcast simulations compared with climate data records in the Gulf of Maine will assess model performance and uncertainty. Forecasts run for a range of potential climate scenarios can help quantify future public health risks. Similarly, specific cells have been identified in the developing brain that are targets of HAB toxins, findings giving insights into developmental toxicological mechanisms. These will guide studies to address the scope of toxin effect in the developing central nervous system, potentially linking developmental exposures to adult consequences. Studies of new mechanisms of toxin action will include determination of the effects of combined or repeated exposure to sub-lethal levels of saxitoxin and domoic acid, and possible silent neurotoxicity, at different life stages in the zebrafish model.

This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

The data management plan for the program can be found here.



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Funding

Funding SourceAward
NSF Division of Ocean Sciences (NSF OCE)
NSF Division of Ocean Sciences (NSF OCE)
National Institutes of Health (NIH)
National Institutes of Health (NIH)

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