Citation:

PANGAEA.963374

Name: Winter cod 2021: CTD data recorded during RV ALKOR cruise AL549
Published: 2023-11-22
License: https://creativecommons.org/licenses/by/4.0/
Keywords: Baltic Sea; cod monitoring data; Field measurements; Gadus morhua; RV ALKOR; Western Baltic; winter

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Published: 2023-11-22 • DOI registered: 2023-12-21

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Abstract:

This data set comprises CTD data of the RV ALKOR cruise AL549 conducted in January 2021 (January 25th – February 1st) in the Western Baltic Sea by the University of Hamburg. The cruise was part of the 5-year monitoring programme Winter cod 2021-25 (Monitoring winter spawning activity of Western Baltic cod (Gadus morhua) (2021-25)) of the University of Hamburg aiming at investigating the early-winter spawning activity of Western Baltic cod to identify potential climate-induced shifts in spawning phenology.

Keyword(s):

Baltic Sea; cod monitoring data; Field measurements; Gadus morhua; RV ALKOR; Western Baltic; winter

Related to:

Funk, Steffen; Möllmann, Christian (2021): Monitoring winter spawning activity of Western Baltic cod (Gadus morhua) (2021-25) Cruise No. AL549. Institute of Marine Ecosystem and Fishery Science Hamburg, Hamburg University, Hamburg, Germany, ALKOR-Berichte, Gutachterpanel Forschungsschiffe, AL549, 24 pp, https://doi.org/10.3289/cr_al549

Project(s):

DAM sustainMare - SpaCeParti: Coastal Fishery, Biodiversity, Spatial Use and Climate Change: A Participative Approach to navigate the Western Baltic Sea into a Sustainable Future (SpaCeParti)

Research Mission of the German Marine Research Alliance (DAM): Protection and sustainable use of marine areas (sustainMare)

Funding:

Federal Ministry of Education and Research (BMBF), grant/award no. 03F0914B : DAM sustainMare - SpaCeParti, University of Hamburg

Coverage:

Median Latitude: 54.470748 * Median Longitude: 10.953759 * South-bound Latitude: 54.140000 * West-bound Longitude: 9.993400 * North-bound Latitude: 54.705800 * East-bound Longitude: 11.826900

Date/Time Start: 2021-01-02T08:18:00 * Date/Time End: 2021-01-31T12:15:00

Minimum DEPTH, water: 0.94 m * Maximum DEPTH, water: 35.50 m

Event(s):

AL549_1-1 * Latitude: 54.513730 * Longitude: 10.019080 * Date/Time: 2021-01-25T08:41:00 * Elevation: -28.0 m * Location: Baltic Sea * Campaign: * Basis: * Method/Device: (CTD-RO)

AL549_3-2 * Latitude Start: 54.550620 * Longitude Start: 10.128060 * Latitude End: 54.550630 * Longitude End: 10.128070 * Date/Time Start: 2021-01-25T12:23:00 * Date/Time End: 2021-01-25T12:25:00 * Elevation Start: -22.0 m * Elevation End: -22.0 m * Location: Baltic Sea * Campaign: * Basis: * Method/Device: (CTD-RO)

AL549_4-1 * Latitude: 54.630080 * Longitude: 10.155480 * Date/Time: 2021-01-25T12:58:00 * Elevation: -23.0 m * Location: Baltic Sea * Campaign: * Basis: * Method/Device: (CTD-RO)

Comment:

Note that the CTD data presented here is already processed data containing the deletion of the upcast (i.e. measurements in the data are obtained from the downcast of the CTD haul) and a rough quality check for outliers (used reliability thresholds: salinity should range no more than from <5 to >37 PSU: Pressure should be always < 60dbar; water Temperature should be not outside the range between -2°C and 10°C; Dissolved oxygen should not exceed values > 15 mg; Albeit temperature no negative values should occur). Measurements exceeding these reliability thresholds were flagged as outliers and removed. Note that additional outliers in the data may occur.

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Event label	Event		Funk, Steffen
2	Cruise/expedition	Expedition		Funk, Steffen
3	Station label	Station		Funk, Steffen
4	Record number	RN		Funk, Steffen
5	DATE/TIME	Date/Time		Funk, Steffen		Geocode
6	LONGITUDE	Longitude		Funk, Steffen		Geocode
7	LATITUDE	Latitude		Funk, Steffen		Geocode
8	DEPTH, water	Depth water	m	Funk, Steffen	Multiparameter probe (CTD), Sea & Sun Technology, CTD90M [Series II]; coupled with Fluorometer, Turner Designs, Cyclops-7 [for Chlorphyll a]; coupled with Oxygen sensor, AMT Analysenmesstechnik GmbH	Geocode – estimated from pressure
9	Pressure, water	Press	dbar	Funk, Steffen	Multiparameter probe (CTD), Sea & Sun Technology, CTD90M [Series II]; coupled with Fluorometer, Turner Designs, Cyclops-7 [for Chlorphyll a]; coupled with Oxygen sensor, AMT Analysenmesstechnik GmbH
10	Temperature, water	Temp	°C	Funk, Steffen	Multiparameter probe (CTD), Sea & Sun Technology, CTD90M [Series II]; coupled with Fluorometer, Turner Designs, Cyclops-7 [for Chlorphyll a]; coupled with Oxygen sensor, AMT Analysenmesstechnik GmbH
11	Conductivity	Cond	mS/cm	Funk, Steffen	Multiparameter probe (CTD), Sea & Sun Technology, CTD90M [Series II]; coupled with Fluorometer, Turner Designs, Cyclops-7 [for Chlorphyll a]; coupled with Oxygen sensor, AMT Analysenmesstechnik GmbH
12	Salinity	Sal		Funk, Steffen	Multiparameter probe (CTD), Sea & Sun Technology, CTD90M [Series II]; coupled with Fluorometer, Turner Designs, Cyclops-7 [for Chlorphyll a]; coupled with Oxygen sensor, AMT Analysenmesstechnik GmbH	PSU
13	Density, sigma-theta (0)	Sigma-theta	kg/m³	Funk, Steffen	Multiparameter probe (CTD), Sea & Sun Technology, CTD90M [Series II]; coupled with Fluorometer, Turner Designs, Cyclops-7 [for Chlorphyll a]; coupled with Oxygen sensor, AMT Analysenmesstechnik GmbH
14	Oxygen saturation	O2 sat	%	Funk, Steffen	Multiparameter probe (CTD), Sea & Sun Technology, CTD90M [Series II]; coupled with Fluorometer, Turner Designs, Cyclops-7 [for Chlorphyll a]; coupled with Oxygen sensor, AMT Analysenmesstechnik GmbH
15	Oxygen, dissolved	DO	mg/l	Funk, Steffen	Multiparameter probe (CTD), Sea & Sun Technology, CTD90M [Series II]; coupled with Fluorometer, Turner Designs, Cyclops-7 [for Chlorphyll a]; coupled with Oxygen sensor, AMT Analysenmesstechnik GmbH
16	Chlorophyll a	Chl a	µg/l	Funk, Steffen	Multiparameter probe (CTD), Sea & Sun Technology, CTD90M [Series II]; coupled with Fluorometer, Turner Designs, Cyclops-7 [for Chlorphyll a]; coupled with Oxygen sensor, AMT Analysenmesstechnik GmbH
17	Depth comment	Depth comm		Funk, Steffen	Multiparameter probe (CTD), Sea & Sun Technology, CTD90M [Series II]; coupled with Fluorometer, Turner Designs, Cyclops-7 [for Chlorphyll a]; coupled with Oxygen sensor, AMT Analysenmesstechnik GmbH	Bottom alert (0: weight has no contact to bottom, 1 weight has contact to bottom)
18	pH	pH		Funk, Steffen	Multiparameter probe (CTD), Sea & Sun Technology, CTD90M [Series II]; coupled with Fluorometer, Turner Designs, Cyclops-7 [for Chlorphyll a]; coupled with Oxygen sensor, AMT Analysenmesstechnik GmbH

License:

Creative Commons Attribution 4.0 International (CC-BY-4.0)

Status:

Curation Level: Enhanced curation (CurationLevelC) * Processing Level: PANGAEA data processing level 3 (ProcLevel3)

Size:

248313 data points

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