Carbon isotope ratio (δ¹³C) in atmospheric methane from the SWERUS-C3 Arctic Ocean expedition in 2014

Brett Thornton, Kristian Andersson, Patrick Crill

Shipborne observations of methane isotopic ratio (δ¹³C) from the Eastern Arctic Ocean in July and August 2014.

This dataset provides rare measurements of δ¹³C-CH₄ in the atmosphere near the sea surface in the Eastern Arctic Ocean's marginal seas. These measurements are useful in characterizing marine sources of CH₄ in the Arctic.

Measurements were made using an Aerodyne Research direct absorption interband cascade laser spectrometer onboard the Swedish icebreaker Oden during the SWERUS-C3 expedition to the Arctic Ocean.

Citation

Brett Thornton, Kristian Andersson, Patrick Crill (2020) Carbon isotope ratio (δ¹³C) in atmospheric methane from the SWERUS-C3 Arctic Ocean expedition in 2014. Dataset version 1. Bolin Centre Database. https://doi.org/10.17043/oden-swerus-2014-d13c-1

References

Berchet A, Pison I, Crill PM, Thornton B, Bousquet P, Thonat T, Hocking T, Thanwerdas J, Paris J-D, Saunois M (2020). Using ship-borne observations of methane isotopic ratio in the Arctic Ocean to understand methane sources in the Arctic. Atmos. Chem. Phys. 20, 3987⁠ – 3998 https://doi.org/10.5194/acp-20-3987-2020

Thornton BF, Geibel MC, Crill PM, Humborg C, Mörth C‐M (2016). Methane fluxes from the sea to the atmosphere across the Siberian shelf seas. Geophys. Res. Lett. 43, 5869⁠ – 5877. https://doi.org/10.1002/2016GL068977

Thornton B, Geibel M, Crill P, Humborg C (2016). Atmospheric methane and carbon dioxide and surface water methane from the SWERUS-C3 Arctic Ocean expedition in 2014, leg 1. Dataset version 1.0. Bolin Centre Database. https://doi.org/10.17043/thornton-2016

Thornton B, Andersson K, Crill P (2020b). Atmospheric methane and carbon dioxide from the SWERUS-C3 Arctic Ocean expedition in 2014, leg 2. Dataset version 1.0. Bolin Centre Database. https://doi.org/10.17043/swerus-2014-ghg

Data description

The data are provided in one comma-separated values (csv) file with four columns:

1. GPS latitude
2. GPS longitude
3. GPS day-of-year (UTC time)
4. Calibrated δ¹³C-CH₄ observations (‰)

Measurements are from an Aerodyne Research direct absorption interband cascade laser spectrometer. Data period is day-of-year 195⁠ – 238 of 2014. For more details see Berchet et al. (2020).

Some further details are provided in a readme file.

Comments

Related datasets also available:

• Atmospheric methane and carbon dioxide and surface water methane from the SWERUS-C3 Arctic Ocean expedition in 2014, leg 1 (Thornton et al. 2016)
• Atmospheric methane and carbon dioxide from the SWERUS-C3 Arctic Ocean expedition in 2014, leg 2 (Thornton et al. 2020).

Alternative contact person for this dataset: [javascript protected email address], Department of Geological Sciences, Stockholm University.