Advanced Global Atmospheric Gases Experiment

Project Description
The Advanced Global Atmospheric Gases Experiment (AGAGE) began in
1994, continuing a global network program to provide continuous
measurements of methane (CH4); nitrous oxide (N2O) and
Chloroflurocarbons CFCl3 (CFC-11), CF2Cl2 (CFC-12), and CF2ClCFC12
(CFC-113); methyl chloroform (CH3CCl3); chloroform (CHCl3), and carbon
tetrachloride (CCl4). The network includes observation stations
situated at different sites throughout the world: Cape Grim, Tasmania;
Point Matatula, American Samoa; Ragged Point, Barbados; and Mace Head,
Ireland; and Trinidad Head, California. Stations existed at Cape
Meares, Oregon and Adrigole, Ireland. The AGAGE is the third phase of
a monitoring network consisting of the Atmospheric Lifetime Experiment
(ALE) and the Global Atmospheric Gases Experiment (GAGE). The AGAGE
phase began in 1994.
The ALE phase (1978-1986) utilized the Hewlett Packard HP5840 gas
chromotographs; the GAGE phase utilized the HP5880 gas chromotagraphs;
and the recently initiated Advanced Global Atmospheric Gases
Experiment (AGAGE) uses a new fully automated system from Scripps
Institution of Oceanography containing a custom-designed HP5890 and
Carle Instruments gas chromotographic components.
The ALE/GAGE/AGAGE daily and monthly data are available via anonymous
FTP from the Carbon Dioxide Information Analysis Center (CDIAC) as
cd pub/ale_gage_Agage/
The subdirectory, Agage, contain data from the AGAGE phase of the
Further information can be obtained from:
Carbon Dioxide Information Analysis Center
Oak Ridge National Laboratory
Building 1000, MS-6335
Oak Ridge, TN 37831-6335
Phone: 423-574-4791
FAX: 423-574-2232