Citation:

PANGAEA.964676 (dataset in review)

Name: Ship-borne measurements of atmospheric CH4 concentration and 𝜹13C-CH4 after the Nord Stream 2 detonation in October 2022
License: https://creativecommons.org/licenses/by/4.0/
Keywords: Baltic Sea; Methane concentration; Methane emissions; Methane isotopy; Methane leakage

Facebook TwitterShow Map Google Earth

Abstract:

The time series of the atmospheric CH4 concentration and 𝜹13C-CH4 were measured continuously during the nights from the third to the sixth of October with a Picarro G2132-i Isotope Analyser. For this, air was sucked from the deck of the research vessel Skagerak at about 12 m above water surface using a Teflon tube. A constant flow rate was generated with a Boxer 3KQ Diaphragma Pump. The Picarro G2132-i then continuously measured on the "High Precision" mode with 3 Hz. Spatial and temporal CH4 concentration differences with higher atmospheric CH4 concentrations closer to the Leaks were recorded. The measured peak in the atmospheric CH4 concentration on October 5th is related to a shift in 𝜹13C-CH4 being relatively more enriched in 13C compared to the background signal. The wind is mainly blowing from the south-west during this period indicating a direct influence by the Nord Stream leaks. This is reflected by the shift towards a heavier isotopic signature showing the influence from the natural gas emitted from the Nord Stream leaks.

Keyword(s):

Baltic Sea; Methane concentration; Methane emissions; Methane isotopy; Methane leakage

Related to:

Abrahamsson, Katarina; Damm, Ellen; Björk, Göran; Bunse, Carina; Sellmaier, Samuel; Broström, Göran; Assmann, Volkmar; Dumitrascu, Adela; Maciute, Adele; Olofsson, Niten; Pourdanandeh, Milad (2024): Methane plume detection after the 2022 Nord Stream pipeline explosion in the Baltic Sea. Scientific Reports, 14(1), 12848, https://doi.org/10.1038/s41598-024-63449-2

Damm, Ellen; Sellmaier, Samuel; Björk, Göran; Abrahamsson, Katarina: Measurements of CH4 concentration and 𝜹13C-CH4 in seawater after the Nord Stream 2 detonation in October 2022 [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.964690

Funding:

University of Gothenburg (GU), grant/award no. NORDEX_2022_expedition

Coverage:

Median Latitude: 55.881386 * Median Longitude: 14.587437 * South-bound Latitude: 55.671377 * West-bound Longitude: 12.431847 * North-bound Latitude: 56.230759 * East-bound Longitude: 15.834763

Date/Time Start: 2022-10-04T01:50:00 * Date/Time End: 2022-10-06T05:37:59

Minimum ALTITUDE: 12 m * Maximum ALTITUDE: 12 m

Event(s):

NORDEX_track_atmo * Latitude Start: 55.753970 * Longitude Start: 15.789610 * Latitude End: 56.230760 * Longitude End: 12.431850 * Date/Time Start: 2022-10-04T01:50:00 * Date/Time End: 2022-10-06T05:37:59 * Campaign: * Basis: * Method/Device: Multiple investigations (MULT)

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	DATE/TIME	Date/Time		Sellmaier, Samuel		Geocode
2	LATITUDE	Latitude		Sellmaier, Samuel		Geocode – measurement temporal frequency: 1/min
3	LONGITUDE	Longitude		Sellmaier, Samuel		Geocode – measurement temporal frequency: 1/min
4	ALTITUDE	Altitude	m	Sellmaier, Samuel		Geocode
5	Ship speed	Ship sp	m/s	Sellmaier, Samuel		Speed over round; measurement temporal frequency: 1/min
6	Course over ground	Course ov gr	deg	Sellmaier, Samuel		measurement temporal frequency: 1/min
7	Temperature, air	TTT	°C	Sellmaier, Samuel	Cavity Ring-Down Spectrometer (CRDS), PICARRO, G2132-i	measurement temporal frequency: 1/min
8	Humidity, absolute	AH	g/m³	Sellmaier, Samuel	Cavity Ring-Down Spectrometer (CRDS), PICARRO, G2132-i	measurement temporal frequency: 1/min
9	Pressure, atmospheric	PPPP	hPa	Sellmaier, Samuel	Cavity Ring-Down Spectrometer (CRDS), PICARRO, G2132-i	measurement temporal frequency: 1/min
10	Wind speed, relative	RelWindSp	m/s	Sellmaier, Samuel	Cavity Ring-Down Spectrometer (CRDS), PICARRO, G2132-i	measurement temporal frequency: 1/min
11	Wind direction, relative	RelWindDir	deg	Sellmaier, Samuel	Cavity Ring-Down Spectrometer (CRDS), PICARRO, G2132-i	measurement temporal frequency: 1/min
12	Water vapour	H2O	%	Sellmaier, Samuel	Cavity Ring-Down Spectrometer (CRDS), PICARRO, G2132-i	measurement temporal frequency: 1/min
13	Carbon dioxide	CO2	ppmv	Sellmaier, Samuel	Cavity Ring-Down Spectrometer (CRDS), PICARRO, G2132-i	measurement temporal frequency: 1/min
14	Methane	CH4	ppmv	Sellmaier, Samuel	Cavity Ring-Down Spectrometer (CRDS), PICARRO, G2132-i	measurement temporal frequency: 1/min
15	δ13C, methane, atmospheric	δ13C CH4	‰ PDB	Sellmaier, Samuel	Cavity Ring-Down Spectrometer (CRDS), PICARRO, G2132-i	30 seconds mean
16	δ13C, methane, atmospheric	δ13C CH4	‰ PDB	Sellmaier, Samuel	Cavity Ring-Down Spectrometer (CRDS), PICARRO, G2132-i	2 minutes mean
17	δ13C, methane, atmospheric	δ13C CH4	‰ PDB	Sellmaier, Samuel	Cavity Ring-Down Spectrometer (CRDS), PICARRO, G2132-i	5 minutes mean
18	δ13C, methane, atmospheric	δ13C CH4	‰ PDB	Sellmaier, Samuel	Cavity Ring-Down Spectrometer (CRDS), PICARRO, G2132-i

License:

Creative Commons Attribution 4.0 International (CC-BY-4.0) (License comes into effect after moratorium ends)

Status:

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

Size:

86534 data points

Download Data

Download dataset as tab-delimited text — use the following character encoding:

View dataset as HTML (shows only first 2000 rows)