Citation:

PANGAEA.963277

Name: Water column Chlorophyll a concentrations during the MOSAiC expedition (PS122) in the Central Arctic Ocean 2019-2020
Published: 2023-11-13
License: https://creativecommons.org/licenses/by/4.0/
Keywords: Arctic; Chl-a; MOSAiC20192020; MOSAiC_ECO; phaeopigments; Phytoplankton; pigments

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Abstract:

Concentrations of Chlorophyll a and phaeopigments from CTD-rosette casts during the MOSAiC (PS122) drift expedition in the central Arctic Ocean. 2-4L of water were filtered onto precombusted GF/F filters (nominal pore size 0.7µm) and frozen at -80°C. Samples were subsequently extracted in 90°C acetone,homogenized using a cell mill, and meaured on the following day using a Turner flourometer, followed by an acidification step to determine pheopigments (see Knap et al. 1994 for details and calculations). Samples were collected roughly once per week from end of October 2019 to beginning of October 2020.

Keyword(s):

Arctic; Chl-a; MOSAiC20192020; MOSAiC_ECO; phaeopigments; Phytoplankton; pigments

References:

Knap, Anthony H; Michaels, A; Close, A R; Ducklow, Hugh W; Dickson, Andrew G (1996): Protocols for the Joint Global Ocean Flux Study (JGOFS) Core Measurements. JGOFS, Reprint of the IOC Manuals and Guides No. 29, UNESCO 1994, 19, 210 pp, hdl:10013/epic.27912.d001

Project(s):

Multidisciplinary drifting Observatory for the Study of Arctic Climate (MOSAiC)

Funding:

Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven (AWI), grant/award no. AFMOSAiC-1_00: Multidisciplinary drifting Observatory for the Study of Arctic Climate

Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven (AWI), grant/award no. AWI_PS122_00: Multidisciplinary drifting Observatory for the Study of Arctic Climate / MOSAiC

Coverage:

Median Latitude: 85.684962 * Median Longitude: 64.086373 * South-bound Latitude: 79.205856 * West-bound Longitude: -35.676758 * North-bound Latitude: 89.024918 * East-bound Longitude: 123.590622

Date/Time Start: 2019-10-31T04:34:00 * Date/Time End: 2020-09-25T08:59:00

Minimum DEPTH, water: 0.909 m * Maximum DEPTH, water: 384.981 m

Event(s):

PS122/1_5-40 * Latitude: 85.763330 * Longitude: 123.590620 * Date/Time: 2019-10-31T04:34:00 * Elevation: -4394.3 m * Sensor URI: sensor.awi.de * Campaign: (MOSAiC20192020) * Basis: * Method/Device: (CTD-RO) * Comment: Cast 1 on 31.10.2019, CTD to 1000 m.

PS122/1_5-59 * Latitude: 85.850666 * Longitude: 122.537766 * Date/Time: 2019-11-02T01:05:00 * Elevation: -4398.2 m * Sensor URI: sensor.awi.de * Campaign: (MOSAiC20192020) * Basis: * Method/Device: (CTD-RO) * Comment: ctd water sampling: winch jumped off at 10 meter depth, three planned bottles at 2 m were not fired.

PS122/1_6-58 * Latitude: 85.911852 * Longitude: 116.281372 * Date/Time: 2019-11-08T01:52:00 * Elevation: -4413.4 m * Sensor URI: sensor.awi.de * Campaign: (MOSAiC20192020) * Basis: * Method/Device: (CTD-RO) * Comment: SE 32.1 1019m

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Event label	Event		Hoppe, Clara Jule Marie
2	Sample code/label	Sample label		Hoppe, Clara Jule Marie
3	Leg Number	Leg		Hoppe, Clara Jule Marie		MOSAiC leg
4	Activity description	Activity		Hoppe, Clara Jule Marie		MOSAiC week
5	Cast number	Cast		Hoppe, Clara Jule Marie
6	DATE/TIME	Date/Time		Hoppe, Clara Jule Marie		Geocode – UTC
7	Device type	Device		Hoppe, Clara Jule Marie		device
8	Device type	Device		Hoppe, Clara Jule Marie		device code
9	LATITUDE	Latitude		Hoppe, Clara Jule Marie		Geocode
10	LONGITUDE	Longitude		Hoppe, Clara Jule Marie		Geocode
11	Collector	Collector		Hoppe, Clara Jule Marie
12	Feature	Feature		Hoppe, Clara Jule Marie
13	DEPTH, water	Depth water	m	Hoppe, Clara Jule Marie		Geocode
14	Chlorophyll a	Chl a	µg/l	Hoppe, Clara Jule Marie	Pigments, Turner fluorometer
15	Phaeopigments	Phae	µg/l	Hoppe, Clara Jule Marie	Acidification method according to Knap et al. (1996)

License:

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

Status:

Curation Level: Enhanced curation (CurationLevelC)

Size:

2273 data points

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