Dataset: CliOMZ AT50-10 Trace Metal Rosette Log

Name: Trace metal rosette log of samples taken on board of the R/V Atlantis during the CliOMZ AT50-10 expedition from Golfito, Costa Rica to San Diego, USA that occurred in May - June of 2023.
Published: 2024-06-13
Keywords: trace metal rosette, ClioMZ, Eastern Tropical Pacific, oceans

Cite This Dataset

DOI:10.26008/1912/bco-dmo.929694.1

Spatial Extent: N:31.083413 E:-88.887522 S:-10.010761 W:-120.232278

International waters of the Eastern Tropical North and South Pacific Ocean, including the Costa Rica Dome. Full depth water column.

Temporal Extent: 2023-05-04 - 2023-06-08

Project:

Collaborative Research: Underexplored Connections between Nitrogen and Trace Metal Cycling in Oxygen Minimum Zones Mediated by Metalloenzyme Inventories (CliOMZ)

Principal Investigator:

Mak A. Saito (Woods Hole Oceanographic Institution, WHOI)

Contact:

Matthew R. McIlvin (Woods Hole Oceanographic Institution, WHOI)

Technician:

Paloma Z. Lopez (Woods Hole Oceanographic Institution, WHOI)

Matthew R. McIlvin (Woods Hole Oceanographic Institution, WHOI)

BCO-DMO Data Manager:

Karen Soenen (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Version:

Version Date:

2024-06-13

Restricted:

Validated:

Yes

Current State:

Final no updates expected

Trace metal rosette log of samples taken on board of the R/V Atlantis during the CliOMZ AT50-10 expedition from Golfito, Costa Rica to San Diego, USA that occurred in May - June of 2023.

Abstract:

This is the log for the trace metal rosette niskin bottles deployed on the R/V Atlantis CliOMZ AT50-10 expedition from Golfito Costa Rica to San Diego USA that occurred in May - June of 2023. The log contains metadata associated with each rosette deployment, including location, bottle depth, and time. The rosette was launched on 1/4" kevlar line spooled on a MASH2K winch from the East Coast Winch Pool. The Science party included members from WHOI, UCSB, UTGRV, and Clark University.

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Archival Copy

Version Date	Archive	Persistent Identifier	Date Assigned
2024-06-13	Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)	10.26008/1912/bco-dmo.929694.1	2024-06-13

Methods & Sampling

Data was logged and collected from Trace Metal Clean Rosette (TMR) deployments during reseach cruise AT50-10. The TMR was deployed on a non-conducting 1/4" Kevlar line and preprogrammed to trip at pre-determined depths on the upcast.

Sampling was conducted using a Trace Metal Clean Rosette (TMR) outfitted with X-Niskin bottles and physicochemical parameters were measured using a mounted Sea-Bird SEACAT 19+. The TMR was deployed on a MASH-2K winch from the UNOLS East Coast Winch Pool.

Problems/Issues

Several casts failed due to low battery in the controller module (comment "failed cast"). Also depths are provided as target depths (programmed_depth_(m)) and measured depths (real_depth) by pressure sensor. These tend to only differ by a few meters, as the package is tripped while transiting the water column. At a few stations the recorded depth was not recorded (missing hex depths), we recommend substituting programmed_depth at those depths.

Data Processing Description

Headers were modified in the log to comply with submission requirements (no special characters). Times and dates were converted to UTC.

BCO-DMO Processing

* adjusted column names to comply with database requirements
* converted date and time notations to iso format
* added iso datetime variable (merging time and date)
* removed incorrect data (17:50) in column "cast_total_depth_m" after communication with submitter

Data Files

File
929694_v1_tracemetallog.csv (Comma Separated Values (.csv), 89.51 KB) MD5:e5f421eb4b122040b10372ab84d9f52c Primary data file for dataset ID 929694, version 1

More Information about this dataset

Funding Sources

Funding Source	Award Number
NSF Division of Ocean Sciences	OCE-1924554

Deployments

Deployment	Synonyms	Start Date	Platform	Investigator
AT50-10		2023-05-02	R/V Atlantis		data info

Instruments

Niskin bottle

Supplied Name:

Supplied Description:

Instrument Type

Generic Name: Niskin bottle

Community Identifier: http://vocab.nerc.ac.uk/collection/L22/current/TOOL0412/

Generic Description:

A Niskin bottle (a next generation water sampler based on the Nansen bottle) is a cylindrical, non-metallic water collection device with stoppers at both ends. The bottles can be attached individually on a hydrowire or deployed in 12, 24, or 36 bottle Rosette systems mounted on a frame and combined with a CTD. Niskin bottles are used to collect discrete water samples for a range of measurements including pigments, nutrients, plankton, etc.

Sea-Bird SBE 19plus V2 SEACAT CTD

Supplied Name:

Supplied Description:

Instrument Type

Generic Name: Sea-Bird SBE 19plus V2 SEACAT CTD

Acronym: Sea-Bird SEACAT 19 Plus V2

Generic Description:

Self-contained self-powered CTD profiler. Measures conductivity, temperature and pressure (Digiquartz sensor) in both profiling (samples at 4 scans/sec) and moored (sample rates of once every 5 seconds to once every 9 hours) mode. Available in plastic or titanium housing with depth ranges of 600m and 7000m respectively. Miniature submersible pump provides water to the conductivity cell. Compared to the previous 19plus, the V2 incorporates an electronics upgrade and additional features, with six differentially amplified A/D input channels, one RS-232 data input channel, and 64 MB FLASH memory.

Parameters

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

Supplied Name	Supplied description	Supplied Units	Standard Name
Cruise_ID	Cruise ID AT50-10	unitless	cruise_id
Station_number	Station number	unitless	station
Cast_number	Sequential cast number for TMR deployments	unitless	cast
Start_date_UTC	Deployment start date, UTC time one. ISO format Format: %Y-%m-%d	unitless	start_date
Start_time_UTC	Deployment start time, UTC time zone. ISO format Format: %H:%M:%S	unitless	time_begin
ISO_DateTime_UTC_Start	Deployment start date and time, UTC timezone. ISO format. Format: %Y-%m-%dT%H:%M:%S	unitless	ISO_DateTime_UTC
Start_Lat	Deployment start latitude	decimal degrees	lat_start
Start_Long	Deployment start longitude	decimal degrees	lon_start
Cast_total_depth_m	Total depth of cast	m	depth
Niskin	Niskin identifier	unitless	bot_Nis
program_depth	Programmed depth	meter (m)	depth
Real_depth	Actual depth	m	depth
Notes	Deployment notes	unitless	comment
sample_number	Sample naming scheme	unitless	sample

Status message

Database

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Dataset: CliOMZ AT50-10 Trace Metal Rosette Log