Citation:

PANGAEA.997313 (DOI registration in progress)

Name: Molecular composition of dissolved organic matter (DOM) along the West Antarctic Peninsula in summer 2023 determined by FT-ICR-MS
Published: 2026-09-18
License: https://creativecommons.org/licenses/by/4.0/
Keywords: Dissolved Organic Matter; field observations; FT-ICR MS; ship-based; Southern Ocean

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Published: 2026-09-18

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Abstract:

As part of the Palmer LTER research program during a 24 day period across January 2023, we conducted oceanographic CTD sampling at 10 sites across the West Antarctic Peninsula (4 on the shelf, 6 on the coast), with a view to link different marine phytoplankton communities to distinct molecular signatures of solid phase extracted (SPE) dissolved organic matter. This dataset comprises ultrahigh resolution mass spectrometry (Fourier-transform ion cyclotron resonance mass spectrometer, FT-ICR-MS) data and molecular indicies calculated from these data (IPhoto, IDeg, IBio).

Keyword(s):

Dissolved Organic Matter; field observations; FT-ICR MS; ship-based; Southern Ocean

Project(s):

Palmer Long-Term Ecological Research (Palmer-LTER)

Funding:

German Research Foundation (DFG), grant/award no. 390741603 : EXC 2077: The Ocean Floor – Earth's Uncharted Interface

National Science Foundation (NSF), grant/award no. 0217282 : Palmer Long-Term Ecological Research

National Science Foundation (NSF), grant/award no. 0823101 : Palmer Long-Term Ecological Research

National Science Foundation (NSF), grant/award no. 1440435 : Palmer Long-Term Ecological Research

National Science Foundation (NSF), grant/award no. 9011927 : Palmer Long-Term Ecological Research

National Science Foundation (NSF), grant/award no. 9632763 : Palmer Long-Term Ecological Research

National Science Foundation (NSF), grant/award no. OPP-2026045 : ANT Integrated System Sciences

Natural Environment Research Council (NERC), grant/award no. NE/S007407/1: E4: Edinburgh Earth, Ecology and Environment Doctoral Training Partnership

Coverage:

Median Latitude: -67.244807 * Median Longitude: -72.297796 * South-bound Latitude: -69.829350 * West-bound Longitude: -78.485540 * North-bound Latitude: -64.608130 * East-bound Longitude: -64.399540

Date/Time Start: 2023-01-04T10:11:30 * Date/Time End: 2023-01-28T12:04:28

Minimum DEPTH, water: 2.41 m * Maximum DEPTH, water: 3050.24 m

Event(s):

LMG2301_C1 * Latitude: -64.932620 * Longitude: -64.399540 * Date/Time: 2023-01-04T10:11:30 * Elevation: -1300.0 m * Location: Southern Ocean * Campaign: (LMG23-01) * Basis: * Method/Device: (CTD-RO)

LMG2301_C2 * Latitude: -65.877580 * Longitude: -68.285540 * Date/Time: 2023-01-11T14:11:30 * Elevation: -340.0 m * Location: Southern Ocean * Campaign: (LMG23-01) * Basis: * Method/Device: (CTD-RO)

LMG2301_C3 * Latitude: -68.301890 * Longitude: -69.826050 * Date/Time: 2023-01-22T03:15:00 * Elevation: -200.0 m * Location: Southern Ocean * Campaign: (LMG23-01) * Basis: * Method/Device: (CTD-RO)

Comment:

Supported by the Antarctic Science International Bursary, "Is Southern Ocean dissolved organic matter export influenced by phytoplankton community composition?" https://www.antarcticsciencebursary.org.uk

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Event label	Event		Fisher, Ben J
2	LATITUDE	Latitude		Fisher, Ben J		Geocode
3	LONGITUDE	Longitude		Fisher, Ben J		Geocode
4	DEPTH, water	Depth water	m	Fisher, Ben J	CTD, Sea-Bird, SBE 911plus	Geocode
5	DATE/TIME	Date/Time		Fisher, Ben J		Geocode
6	Molecular formula	Formula		Fisher, Ben J	Fourier transform ion cyclotron resonance mass spectrometer (FT-ICR MS)
7	Mass of molecular formulas	m/z		Fisher, Ben J	Fourier transform ion cyclotron resonance mass spectrometer (FT-ICR MS)	intensity weighted average mass derived from the mass-to-charge ratio in Dalton (Da)
8	Hydrogen/Carbon ratio	H/C		Fisher, Ben J	Fourier transform ion cyclotron resonance mass spectrometer (FT-ICR MS)	intensity weighted Hydrogen-to-Carbon ratio
9	Oxygen/Carbon ratio	O/C		Fisher, Ben J	Fourier transform ion cyclotron resonance mass spectrometer (FT-ICR MS)	intensity weighted Oxygen-to-Carbon ratio
10	Peak intensity	Peak int		Fisher, Ben J	Fourier transform ion cyclotron resonance mass spectrometer (FT-ICR MS)	Relative

License:

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

Status:

Curation Level: Enhanced curation (CurationLevelC)

Size:

1673280 data points

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