Elemental and isotopic composition measurements of O2, N2, Ar, and CH4 are reported for three firn cores and two blue-ice cores from the Summit of Mt. Moulton. Firn air was sampled from various levels within the firn and from ice just beneath the firn/ice transition region. Blue-ice cores were sampled from the surface to approximately 33 meters below the surface.
Use Cases
- Analyze trends in CH4 isotopic composition across different depths in firn cores.
- Compare elemental ratios of O2 and N2 between firn cores and blue-ice cores.
- Model gas diffusion processes using Ar composition data from various levels within the firn.
- Study the firn/ice transition region by comparing gas measurements from firn and the ice beneath it.
Strengths
- Data includes measurements from three distinct firn cores.
- Blue-ice cores provide a continuous profile from surface to approximately 33 meters depth.
- Composition reported for four specific gases: O2, N2, Ar, and CH4.
Limitations
- Unknown sample size (row count) for each core.
- No temporal coverage or dating information provided for the samples.
- Geographic coverage is limited to one site: Summit of Mt. Moulton.
Provenance
- Source
- SCIOPS via NASA Earthdata.
- Collection Method
- Measured from samples collected from firn cores and blue-ice cores drilled at the Summit of Mt. Moulton.
- Geography
- Summit of Mt. Moulton.