Data · collection
Gases in Firn Air and Shallow Ice at the Proposed WAIS Drilling Site
Listed in NASA Earthdata CMR
These data are trace gas measurements of air extracted from ice core samples from the West Antarctic Ice Sheet Divide A core (WAIS-D 05A).
Description
This core was dry-drilled at the WAIS site during the 2005-2006 field season. A total of 57 ice core samples were analyzed for nine trace gas species: ethane (C2H6), propane (C3H8), n-butane (n-C4H10), carbonyl sulfide (COS), carbon disulfide (CS2), methyl chloride (CH3Cl), methyl bromide (CH3Br), acetonitrile (CH3CN), and chlorofluorocarbon-12 (CFC-12).
The analyses were conducted in a gas chromatography/mass spectrometry system at the University of California, Irvine. Details of the ice extraction and analytical methods can be found in Aydin et al., 2007. The data in this file are currently unpublished and should be considered preliminary.
Read the rest (2 more)
Mixing ratios could reflect the impact of analytical or sampling artifacts in addition to real temporal variations in atmospheric levels of these trace gases. Based on prior studies (Aydin et al., 2008; Saltzman et al., 2009; Williams et al., 2007), it is expected that Antarctic ice cores in general preserve a real atmospheric record of CH3Cl, CH3Br, COS, CS2, and CFC-12. However, there are no prior published ice core records for any of the other compounds reported here.
It is not recommended that the light alkane and CH3CN data be interpreted as paleo-atmospheric gas records.
Links
Documentation and papers
- waisdivide.unh.edu ↗
The U.S research community is conducting a deep ice coring project in West Antarctica for studies of climate, ice sheet history and cryobiology. This project is collecting a deep ice core from the Wes
documentation · from NASA CMR
- NSF Award Abstract nsf.gov/awardsearch/showAward.do?AwardNumber=0440602 ↗
documentation · from NASA CMR
Catalogue records · 2
- CMR record cmr.earthdata.nasa.gov/search/concepts/C1214594156-SCIOPS.html ↗
catalogue entry · from NASA CMR
- CMR UMM-JSON cmr.earthdata.nasa.gov/search/concepts/C1214594156-SCIOPS.umm_json ↗
metadata API · from NASA CMR
Topics
- Stated by source
- CORING DEVICES · FIELD INVESTIGATION · FIELD SURVEYS · FLASKS · Glaciers · Glaciers Ice Sheets · Ice Sheets · LABORATORY · MASS SPECTROMETERS · Not provided · Snow Ice · Snow/Ice Chemistry
- Inferred from text
- Climate change science 74% · Mass spectrometry 75%
Provenance · 1 source records, 20 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| NASA Earthdata CMR | C1214594156-SCIOPS | 12 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[field].anzsrc:group:3702 | enrichment · NASA CMR | taxonomy-embedding@1.1.0 | title+keywords+description (74%) |
| concepts[instrument].gcmd_instrument:coring-devices | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[instrument].gcmd_instrument:flasks | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[instrument].gcmd_instrument:mass-spectrometers | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/cryosphere/glaciers-ice-sheets | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/cryosphere/glaciers-ice-sheets/glaciers | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/cryosphere/glaciers-ice-sheets/ice-sheets | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/cryosphere/snow-ice | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/cryosphere/snow-ice/snow-ice-chemistry | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[modality].local:modality:mass-spectrometry | enrichment · NASA CMR | keyword-concept-rules@1.0.0 | title+description (75%) |
| concepts[platform].gcmd_platform:field-investigation | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[platform].gcmd_platform:field-surveys | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[platform].gcmd_platform:laboratory | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[platform].gcmd_platform:not-provided | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| description | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/Abstract |
| spatial | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/SpatialExtent |
| temporal | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/TemporalExtents |
| title | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/EntryTitle |
| version_label | source · NASA CMR | connector:nasa_cmr@1.0.0 |