Dataset: CTD 2017

Name: CTD data from station N-1200 collected in August 2017 from a cruise aboard R/V Mediterranean Explorer
Published: 2022-05-24
Keywords: oceans

View Data: Data not available yet

Cite This Dataset

Spatial Extent: N:32.456 E:34.3745 S:32.456 W:34.3745

Temporal Extent: 2017-08-07

Project:

Microbial ecosystems in silico, in the lab and in the field: understanding interactions between abundant marine bacterial taxa (HADFBA)

Principal Investigator:

Daniel Sher (University of Haifa)

BCO-DMO Data Manager:

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

Version:

Version Date:

2022-05-24

Restricted:

Validated:

Current State:

Data not available

CTD data from station N-1200 collected in August 2017 from a cruise aboard R/V Mediterranean Explorer

Abstract:

This dataset contains CTD (Conductivity, Temperature, Depth) from a cruise to station N-1200 to study the photic zone in the Eastern Mediterranean at high depth resolution. Data were collected on August 7, 2017 from the R/V Mediterranean Explorer.

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Methods & Sampling

Cruises and sample collection
A cruise was carried out on August 7, 2017 on R/V Mediterranean Explorer to study the photic zone in the Eastern Mediterranean at high depth resolution. Genetic data and nano-SIMS measurements were used to infer and quantify mixotrophy by Prochlorococcus at the base of the photic zone.

Water samples were collected using a 12-bottle rosette with 8 L Niskin bottles. Sampling depths were selected based on real-time data from a Conductivity, Temperature, Depth (CTD) profiler (Seabird 19 Plus) from the down-cast before each sample collection in the up-cast. The continuous data were processed using custom Excel files taking into account the location of each sensor and the sensor delay, and binned over 1-meter intervals.

Data Processing Description

The whole dataset has undergone quality control and has no known errors. Gaps in data are represented by the value 'nd' (no data).

BCO-DMO Processing:
- renamed fields;
- added columns for Latitude, Longitude, and Date.

More Information about this dataset

Funding Sources

Funding Source	Award Number
NSF Division of Ocean Sciences	OCE-1635070

Deployments

None available yet

Instruments

CTD Sea-Bird

Supplied Name: Seabird 19 Plus

Supplied Description:

Instrument Type

Generic Name: CTD Sea-Bird

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/130/

Generic Description:

Conductivity, Temperature, Depth (CTD) sensor package from SeaBird Electronics, no specific unit identified. This instrument designation is used when specific make and model are not known. See also other SeaBird instruments listed under CTD. More information from Sea-Bird Electronics.

Niskin bottle

Supplied Name: 8 L Niskin bottles

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.

Parameters

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

Supplied Name	Supplied description	Supplied Units	Standard Name
Binned_depth	Depth (1m bins)	meters (m)	depth
Mean_Temp	TV290C; Mean temperature over 1m bin ITS-90	degrees Celsius	temp
Mean_Sal	Mean salinity over 1m depth bin	PSU	sal
Mean_FISP	In-situ chlorophyll autofluorescence, mean over 1m bin	AU (Seapoint)	fluor
Mean_PAR	PAR/irradiance, Biospherical/LiCor, mean over 1m bin	MicroEinsteins	PAR
Mean_Oxygen	Oxygen (SBE 63) % saturation	percent	O2sat
Latitude	Latitude of sampling location	degrees North	lat
Longitude	Longitude of sampling location	degrees East	lon
Date	Sample date in format YYYY-MM-DD Format: %Y-%m-%d	unitless	date

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Database

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Dataset: CTD 2017