Characterization of atmospheric methane release in the outer Mackenzie River delta from biogenic and thermogenic sources. Data used in Table 1. ...

• Main Authors: Wesley, Daniel, Dallimore, Scott, MacLeod, Roger, Sachs, Torsten, Risk, David
• Format: Dataset
• Language: unknown
• Published: figshare 2023
• Subjects: Other environmental sciences not elsewhere classified; Canada; Mackenzie River; Northwest Territories; Mackenzie river
• Online Access: https://dx.doi.org/10.6084/m9.figshare.24718683; https://figshare.com/articles/dataset/Characterization_of_atmospheric_methane_release_in_the_outer_Mackenzie_River_delta_from_biogenic_and_thermogenic_sources_Data_used_in_Table_1_/24718683

A .pdf file containing geolocated atmospheric CH 4 and CO 2 mixing ratios for the Mackenzie-Beaufort Delta region of the Northwest Territories, Canada. CH 4 and CO 2 values are in parts per million by volume (ppmv). All sample air was drawn from approximately 1 m above ground level. Gas mixing ratios were standardized to Ameriflux FB04306 breathing grade air (benchmarked to 0.5 ppb). Measurements at sites Pingo 3 and Wetland 1 were obtained by using a portable Li-Cor LI-7810 gas analyser in the field. The Li-Cor LI-7810 gas analyser has an accuracy of 0.25 ppb. Measurements at sites Pingo 1, Pingo 2, Wetland 2, Wetland 3, and Site 9 were collected by filling a 30 m coil of 4 mm inside diameter aluminum Synflex tubing while walking at a steady pace across the ground. Coils of tubing were purged with nitrogen and sealed prior to sampling. A constant flow rate of 20 standard cubic centimetres per minute (SCCM) was maintained by attaching a small pump and a flow controller to the coil of tubing. Air samples were ...