Patrick Crill
Atmospheric observations of CH₄, CO₂, and dissolved CH₄ in surface waters, during leg 1 of the SWERUS-C3 project in the Arctic Ocean in July and August 2014. Datasets were collected onboard the Swedish icebreaker Oden.
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References
Thornton, B. F., M. C. Geibel, P. M. Crill, C. Humborg, and C.-M. Mörth. 2016: Methane fluxes from the sea to the atmosphere across the Siberian shelf seas, Geophys. Res. Lett., 43, DOI: 10.1002/2016GL068977
Data description
This datapackage contains atmospheric observations of CH₄, CO₂, and dissolved CH₄ in surface waters, during leg 1 of the SWERUS-C3 project in the Arctic Ocean in July and August 2014. Datasets were collected onboard the Swedish icebreaker Oden. This datapackage consists of three CSV files:
1. SWERUS_leg1_air_GHG_temporal.csv
Calibrated CH₄, CO₂ in ppm, measured in the air at 4, 9, 15, 20, and 35 m heights above sea surface. Other variables: standard deviation of CH₄ and CO₂ in ppm, GPS (DOY, latitude, longitude), valve position (inlet height, see below). DOY 192–229. This atmospheric data has been filtered for windspeed, wind direction, and CO₂ > 450 ppm (filters are designed to remove possible ship influence from data).
2. SWERUS_leg1_water_GHG_temporal.csv
Calibrated dissolved CH₄ in ppm, data measured from an intake in the hull of Oden at ca. 8 m depth. Other variables: GPS (latitude, longitude, DOY), seawater salinity, seawater temperature, seawater pH, 10 m windspeed (corrected from measurement height). DOY 189–222.
3. SWERUS_leg1_air_water_GHG_spatial.csv
Includes coincident air and water measurements from days 192–222. Same measurements as above BUT all measurements have been gridded and averaged to 0.001 degree resolution (a spatial normalization process which accounts for varying ship speed during the cruise).