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Title: Atmospheric CO2 Concentrations from the Commonwealth Scientific and Industrial Research Organization (CSIRO) GASLAB Flask Sampling Network (March 1991 - December 2006)

Abstract

Individual measurements have been obtained from flask air samples returned to the CSIRO GASLAB. Typical sample storage times range from days to weeks for some sites (e.g. Cape Grim, Aircraft over Tasmania and Bass Strait) to as much as one year for Macquarie Island and the Antarctic sites. Experiments carried out to test for changes in sample CO2 mixing ratio during storage have shown significant drifts in some flask types over test periods of several months to years (Cooper et al., 1999). Corrections derived from the test results are applied to network data according to flask type. These measurements indicate a rise in annual average atmospheric CO2 concentration from 357.72 parts per million by volume (ppmv) in 1992 to 383.05 ppmv in 2006, or an increase in annual average of about 1.81 ppmv/year. These flask data may be compared with other flask measurements from the Scripps Institution of Oceanography, available through 2004 in TRENDS; both indicate an annual average increase of 1.72 ppmv/year throuth 2004. Differences may be attributed to different sampling times or days, different numbers of samples, and different curve-fitting techniques used to obtain monthly and annual average numbers from flask data. Measurement error in flask data ismore » believed to be small (Masarie et al., 2001).For access to the data files, click this link to the CDIAC data transition website: http://cdiac.ess-dive.lbl.gov/trends/co2/csiro/« less

Authors:
; ;
  1. Commonwealth Scientific and Industrial Research Organization (CSIRO)
Publication Date:
Other Number(s):
osti:1389352; doi:10.3334/CDIAC/ATG.018; cdiac:doi 10.3334/CDIAC/atg.018
Research Org.:
Environmental System Science Data Infrastructure for a Virtual Ecosystem (ESS-DIVE) (United States)
Sponsoring Org.:
U.S. DOE > Office of Science (SC) > Biological and Environmental Research (BER) (SC-23). Climate and Environmental Sciences Division
Subject:
54 ENVIRONMENTAL SCIENCES
Keywords:
Atmospheric CO2; Atmospheric Carbon Dioxide; Gas Chromatography ; Flame Ionization Detection; CSIRO; Flask Sampling; GASLAB; TRENDS: Atmospheric Carbon Dioxide ; Month; Year; arithmetic means of the 12 monthly values
OSTI Identifier:
1389352
DOI:
https://doi.org/10.3334/CDIAC/ATG.018

Citation Formats

Steele, L. P., Krummel, P. B., and Langenfelds, R. L. Atmospheric CO2 Concentrations from the Commonwealth Scientific and Industrial Research Organization (CSIRO) GASLAB Flask Sampling Network (March 1991 - December 2006). United States: N. p., 2002. Web. doi:10.3334/CDIAC/ATG.018.
Steele, L. P., Krummel, P. B., & Langenfelds, R. L. Atmospheric CO2 Concentrations from the Commonwealth Scientific and Industrial Research Organization (CSIRO) GASLAB Flask Sampling Network (March 1991 - December 2006). United States. doi:https://doi.org/10.3334/CDIAC/ATG.018
Steele, L. P., Krummel, P. B., and Langenfelds, R. L. 2002. "Atmospheric CO2 Concentrations from the Commonwealth Scientific and Industrial Research Organization (CSIRO) GASLAB Flask Sampling Network (March 1991 - December 2006)". United States. doi:https://doi.org/10.3334/CDIAC/ATG.018. https://www.osti.gov/servlets/purl/1389352. Pub date:Tue Dec 31 00:00:00 EST 2002
@article{osti_1389352,
title = {Atmospheric CO2 Concentrations from the Commonwealth Scientific and Industrial Research Organization (CSIRO) GASLAB Flask Sampling Network (March 1991 - December 2006)},
author = {Steele, L. P. and Krummel, P. B. and Langenfelds, R. L.},
abstractNote = {Individual measurements have been obtained from flask air samples returned to the CSIRO GASLAB. Typical sample storage times range from days to weeks for some sites (e.g. Cape Grim, Aircraft over Tasmania and Bass Strait) to as much as one year for Macquarie Island and the Antarctic sites. Experiments carried out to test for changes in sample CO2 mixing ratio during storage have shown significant drifts in some flask types over test periods of several months to years (Cooper et al., 1999). Corrections derived from the test results are applied to network data according to flask type. These measurements indicate a rise in annual average atmospheric CO2 concentration from 357.72 parts per million by volume (ppmv) in 1992 to 383.05 ppmv in 2006, or an increase in annual average of about 1.81 ppmv/year. These flask data may be compared with other flask measurements from the Scripps Institution of Oceanography, available through 2004 in TRENDS; both indicate an annual average increase of 1.72 ppmv/year throuth 2004. Differences may be attributed to different sampling times or days, different numbers of samples, and different curve-fitting techniques used to obtain monthly and annual average numbers from flask data. Measurement error in flask data is believed to be small (Masarie et al., 2001).For access to the data files, click this link to the CDIAC data transition website: http://cdiac.ess-dive.lbl.gov/trends/co2/csiro/},
doi = {10.3334/CDIAC/ATG.018},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2002},
month = {12}
}