Air sampling and analysis from Antarctic firn and ice

• Other Authors: ETHERIDGE, DAVID (hasPrincipalInvestigator), SMITH, ANDREW M (hasPrincipalInvestigator), LOWE, DAVID (hasPrincipalInvestigator), KRUMMEL, PAUL (processor), CSIRO GASLAB/ICELAB (originator), Australian Antarctic Data Centre (publisher)
• Format: Dataset
• Language: unknown
• Published: Australian Antarctic Data Centre
• Subjects: climatologyMeteorologyAtmosphere; geoscientificInformation; inlandWaters; TRACE GASES/TRACE SPECIES; EARTH SCIENCE; ATMOSPHERE; ATMOSPHERIC CHEMISTRY; CARBON DIOXIDE; PALEOCLIMATE; ICE CORE RECORDS; ICE CORE AIR BUBBLES; IONS; ISOTOPES; METHANE; NITROUS OXIDE; PARTICULATE MATTER; VOLCANIC DEPOSITS; SNOW/ICE CHEMISTRY; CRYOSPHERE; SNOW/ICE; FIRN; GLACIERS/ICE SHEETS; EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC CHEMISTRY > CARBON AND HYDROCARBON COMPOUNDS > ATMOSPHERIC CARBON DIOXIDE; ATMOSPHERIC CARBON MONOXIDE; CHLOROFLUOROCARBONS; HALOCARBONS AND HALOGENS; HYDROCHLOROFLUOROCARBONS; HYDROFLUOROCARBONS; MOLECULAR OXYGEN; OXYGEN COMPOUNDS; METHYL BROMIDE; METHYL CHLORIDE; CARBON TETRACHLORIDE; AGE; AIR AGE; C13 CO2; CH4; CHLOROFORM; CONCENTRATION; DECADAL RECORDS; DEPTH; DICHLOROMETHANE; GREENHOUSE GASES; ICE AGE; OZONE DEPLETING GASES; TRACE GASES; UNCERTAINTY; Paleo Start Date 300 YBP; Paleo Stop Date 2 YBP; PHANEROZOIC > CENOZOIC > QUATERNARY > HOLOCENE; CONTINENT > AUSTRALIA/NEW ZEALAND > AUSTRALIA > Cape Grim; ANTARCTICA > Law Dome; GEOGRAPHIC REGION > POLAR; Antarctic; Grim; New Zealand; The Antarctic; Antarc*; Antarctica; ice core; Ice Sheet
• Online Access: https://researchdata.edu.au/air-sampling-analysis-firn-ice/699341; https://data.aad.gov.au/metadata/records/ASAC_1004

Air from the ice and firn (compressed snow) of the Antarctic ice sheet will be extracted and measured for atmospheric composition in the past. Gases of interest are greenhouse gases (carbon dioxide, methane, nitrous oxide) and ozone depleting gases (CFCs, halons). The aim is to understand the budgets of these important atmospheric constituents. The ice cores drilled for the gas measurements will also be measured for isotopic ratios and chemical impurities, which provides information about past climate. A download of 'Halocarbon data from Law Dome firn air and from Cape Grim' is available at the url given below. The fields in this dataset are: CFC HCFC HFC Halon Carbon tetrachloride methyl chloroform Age Concentration Uncertainty Methane CH4 Air age C13 CO2 Depth Ice age Methyl bromide Methyl chloride Chloroform Dichloromethane