Atmospheric CH4 Concentrations from the Commonwealth Scientific and Industrial Research Organization (CSIRO) GASLAB Flask Sampling Network (1984 - 2001)

• Main Authors: L. P. Steele, P. B. Krummel, R. J. Langenfelds
• Format: Dataset
• Language: unknown
• Published: ESS-DIVE: Deep Insight for Earth Science Data 2003
• Subjects: atmospheric; CH4; methane; flask air samples; mercuric oxide reduction; gas detector; gas chromatography; TRENDS-OTHER ATMOSPHERIC TRACE GASES; Year; Month; Annual Average; Antarctic; The Antarctic; Grim; Antarc*; Macquarie Island
• Online Access: https://search.dataone.org/view/ess-dive-ba0926715dc1c26-20230407T161107040688

The listed data were obtained from flask air samples returned to the CSIRO GASLAB for analysis. Typical sample storage times ranged from days to weeks for some sites (e.g., Cape Grim) to as much as one year for Macquarie Island and the Antarctic sites. Experiments carried out to test for any change in sample CH4 mixing ratio during storage have shown no drift to within detection limits over test periods of several months to years (Cooper et al., 1999). For access to the data files, click this link to the CDIAC data transition website: http://cdiac.ess-dive.lbl.gov/trends/atm_meth/csiro/csiro_gaslabch4.html