Index of /ftp/ale_gage_Agage/AGAGE

[ICO]NameLast modifiedSizeDescription

[PARENTDIR]Parent Directory  -  
[   ]AGAGE_scale_2017_v1.pdf2017-08-15 18:48 202K 
[   ] 19:11 269M 
[TXT]README2017-08-15 18:56 8.7K 
[DIR]gc-md/2017-08-18 17:52 -  
[DIR]gc-ms-medusa/2017-08-15 19:00 -  
[DIR]gc-ms/2017-08-15 18:59 -  

Latest update: (Aug. 2017)

For all released compounds and the latest scales used by AGAGE network, 
please see 'AGAGE_scale_2017_v1.pdf" file.

There are three subdirectories, "gc-md" ,"gc-ms" and 'gc-ms-medusa", 
in current directory. 

(1) chemical species measured by AGAGE GC-ECD/FID/MRD system are
    saved in "gc-md" (i.e CFC-11, CFC-12, CH3CCl3, CCl4, N2O,
    CFC-113, CH4, CHCl3, CO, and H2).

    Both Mace Head and Cape Grim H2 data have been converted to a new
    (MPI2009) calibration scale. Please see "H2calibration_2013.v01.doc"
    in "gc-md" directory for further information

(2) chemical compounds measured by AGAGE GC-MS (ADS) system (i.e
    HFC-134a, HCFC-22, HCFC-141b, HCFC-142b, CH3Cl, CH3Br,
    Halon-1211, Halon-1301, HFC-152a, CH2Cl2, CHClCCl3, and 
    CCl2CCl2) are saved in "gc-ms" area.

(3) The original AGAGE GC-MS (ADS) instruments at Mace Head and
    Cape Grim were retired in December 2004. They were replaced
    by new generation of Medusa GCMS system, which has been 
    installed at Mace Head (November 2003), Cape Grim (January 2004)
    Trinidad Head (April 2005), Barbados (May 2005), and Samoa (May 2006).
    Data from Medus GC-MS instruments are saved in "gc-ms-medusa" area.
    Currently there are 36 compounds measured by Medusa GC-MS instruments
    available for public archive. Available compounds are following,

       CFC-11,     CFC-12,    CFC-113,   CFC-114,     CFC-115
       HCFC-22,    HCFC-141b, HCFC-142b
       HFC-125,    HFC-134a,  HFC-152a,  HFC-365mfc,  HFC-23,  HFC-4310mee
       Halon-1211, Halon-1301,Halon-2402 
       CH3Cl,      CH2Cl2,    CHCl3,     CH3Br
       CH3CCl3,    CHClCCl2,  CCl2CCl2   CCl4
       SF6,        SO2F2,     NF3
       PFC-14,     PFC-116,   PFC-218
       HFC-32,     HFC-143a,  HFC-227ea   HFC-236fa  HFC-245fa

    You can find the above data in "gcms_medusa" directory.

(4) For Gosan, South Korea, staion, only monthly mean data are released. The original
    high frequency data will be released in the future.

(5) In general data through Sep. 2016 are included in this update
    You can download "" file
    for all data in current and sub-directory (gc-md, gc-ms, gc-ms-medusa).

(6) Please be aware that Medusa TCE (CHClCCl2), and PCE (CCl2CCl2) data
    have not been applied "blank correction". Those data are preliminary
    and will be updated later (after blank correction is applied).

(7) It was found that there are offsets in Mace Head CHCl3 data between
    GC-MD and GC-MS Medusa measurements. The reason is unknown and it's
    under investigation by instrument team.

(8) For more information about AGAGE data and instruments, please
    see AGAGE web site (

AGAGE related publications (for recent publications, please see 
      "" )

(i) General reference for all species: instrumentation,
    calibration and measurements

   Prinn, R.G., R.F. Weiss, P.J. Fraser, P.G. Simmonds, D.M.
   Cunnold, F.N. Alyea, S. O'Doherty, P. Salameh, B.R. Miller,
   J. Huang, R.H.J. Wang, D.E. Hartley, C. Harth, L.P. Steele,
   G. Sturrock, P.M. Midgley, and A. McCulloch, A History of
   Chemically and Radiatively Important Gases in Air deduced
   from ALE/GAGE/AGAGE, J. Geophys. Res., 105, 17,751-17,792,

(ii) Species from GCMD measurements

   CFC-11, CFC-12

   Cunnold, D.M., R. F. Weiss, R. G. Prinn, D. E. Hartley, P.
   G. Simmonds, P.J. Fraser, B. R. Miller, F. N. Alyea, and L.
   Porter, GAGE/AGAGE measurements indicating reduction in
   global emissions of CCl3F and CCl2F2 in 1992-1994, J.
   Geophys. Res., 102, 1259-1269, 1997

   (a) all stations:
   Prinn,  R.G.,  J.  Huang,  R.F. Weiss,  D.M.  Cunnold,  P.J.
   Fraser, P.G. Simmonds, A. McCulloch, C. Harth, S. Reimann, P.
   Salameh, S. O'Doherty, R.H.J. Wang, L. Porter, B.R. Miller, 
   and P.B. Krummel, Evidence for variability of atmospheric
   hydroxyl radicals over the past quarter century, Geophys.
   Res. Lett., 32, L07809, 10.1029/2004GL022228, 2005.

   Prinn,  R.G.,  J.  Huang,  R.F. Weiss,  D.M.  Cunnold,  P.J.
   Fraser, P.G. Simmonds, A. McCulloch, C.Harth, P. Salameh, S.
   O'Doherty, R.H.J. Wang, L. Porter, and B.R. Miller, Evidence
   for  significant variations of atmospheric hydroxyl radicals
   in the last two decades, Science, 292. 1882-1888, 2001

   (b) European stations:
   Reimann, S., J.M. Alister, P.G. Simmonds, D.M. Cunnold,
   R.H.J. Wang, J. Li, A. McCulloch, R.G. Prinn, J. Huang, R.F.
   Weiss, P.J. Fraser, S. O'Doherty, B.B. Greally, K. Stemmler,
   M. Hill and D. Folini, Low European methyl chloroform
   emissions inferred from long-term atmospheric measurements,
   Nature, 433, 506-509.

   Simmonds, P.G., D. M. Cunnold, R.F. Weiss, R.G. Prinn,  P.J.
   Fraser,  A. McCulloch, F.N. Alyea, and S. O'Doherty,  Global
   trends   and  emissions  of  CCl4  from  in-situ  background
   observations from July 1978 to June 1996, J. Geophys.  Res.,
   103, 16017-16027, 1998.

   Prinn, R.G., D.M. Cunnold, R. Rasmussen, P.G. Simmonds, F.N.
   Alyea, A. Crawford, P.J. Fraser, and R. Rosen, Atmospheric
   emissions and trends of nitrous oxide deduced from ten years
   of ALE-GAGE data, J. Geophys. Res., 95, 18369-18385, 1990.

   Fraser, P., D. Cunnold, F. Alyea, R. Weiss, R. Prinn, P.
   Simmonds, B. Miller, and R. Langenfelds, Lifetime and
   emission estimates of 1,1,2-trichlorotrifluorethane (CFC-
   113) from daily global background observations June 1982-
   June 1994., J. Geophys. Res., 101, 12,585-12,599, 1996.

   Cunnold, D.M., L.P. Steele, P.J. Fraser, P.G. Simmonds, R.G.
   Prinn, R.F. Weiss, L.W. Porter, R.L. Langenfelds, H.J. Wang,
   L. Emmons, X.X. Tie, and E.J. Dlugokencky, In situ
   measurements of atmospheric methane at GAGE/AGAGE sites
   during 1985-2000 and resulting source inferences. J.
   Geophys. Res., 107, D14, doi: 10.1029/2001JD001226, 2002.

   O'Doherty,  S.,  D. Cunnold, G.A. Sturrock, D.  Ryall,  R.G.
   Derwent, H.J. Wang, P. Simmonds, P.J. Fraser, R.F. Weiss, P.
   Salameh,  B.R.  Miller, and R.G. Prinn,  In-situ  chloroform
   measurements  at  AGAGE atmospheric research  stations  from
   1994-1998, J. Geophys. Res., 106, 20,429-20,444, 2001.

   Derwent,  R.G., D.B. Ryall, S.G. Jennings, T.G.  Spain,  and
   P.G.  Simmonds, Black carbon aerosol and carbon monoxide  in
   European  regionally-polluted  air  masses  at  Mace   Head,
   Ireland  during  1995-1998, Atmos. Environ., 35,  6371-6378,

   Simmonds, P.G., R.G. Derwent, S. O'Doherty, D.B. Ryall, L.P.
   Steele,  R.L.  Langenfelds,  P.  Salameh,  H.J.  Wang,  C.H.
   Dimmer,  L.E. Hudson, Continuous high-frequency observations
   of hydrogen at the Mace Head baseline atmospheric monitoring
   station  over the 1994-1998 period, J. Geophys.  Res.,  105,
   12105-12121, 2000.

(iii) Species from GCMS measurements

   CH3Br, CH3Cl
   Simmonds,  P.G., S. O'Doherty, R.G. Derwent,  A.J.  Manning,
   D.B.  Ryall, P. Fraser, L. Porter, P. Krummel, R. Weiss,  B.
   Miller, P. Salameh, D. Cunnold, R. Wang, and R. Prinn, AGAGE
   observations  of methyl bromide and methyl chloride  at  the
   Mace  Head,  Ireland and Cape Grim, Tasmania, 1998-2001,  J.
   Atmos. Chem., 47, 243-269, 2004.

   Cox.  M.L.  G.A.  Sturrock, P.J. Fraser,  S.T.  Siems,  P.B.
   Krummel,  and  S.  O'Doherty,  Regional  sources  of  methyl
   chloride,  chloroform  and dichloromethane  identified  from
   AGAGE  observations at Cape Grim, Tasmania,  1998-2000.,  J.
   Atmos. Chem., 45, 79-99, 2003.

   Cohan,  D.S.,  G.A. Sturrock, A.P. Biazar, and P.J.  Fraser,
   Atmospheric methyl iodide at Cape Grim, Tasmania from  AGAGE
   observations, J. Atmos. Chem., 44, 131-150, 2003.

   HFC-134a, HCFC-141b, -142b, -22
   O'Doherty, S., D.M. Cunnold, P.G. Simmonds, G. Sturrock,  J.
   Huang,  R.G. Prinn, L.W. Porter, P.J. Fraser, P.B.  Krummel,
   B.R.  Miller,  P.  Salameh,  R.F.  Weiss,  R.H.J.  Wang,  A.
   McCulloch,  S.  Montzka,  A. Manning,  D.  Ryall,  and  R.G.
   Derwent,   Rapid  growth  of  hydrofluorocarbon   134a   and
   hydrochlorofluorocarbons 141b, 142b, and  22  from  Advanced
   Global Atmospheric Gases Experiment (AGAGE) observations  at
   Cape  Grim,  Tasmania, and Mace Head, Ireland,  J.  Geophys.
   Res., 109, D06310, doi: 10.1029/2003JD004277, 2004.

   Miller, B.R., J. Huang, R.F. Weiss, R.G. Prinn and P.J.
   Fraser, Atmospheric trend and lifetime of
   chlorodifluoromethane (HCFC-22) and the global tropospheric
   OH concentrations, J. Geophys. Res., 103, 13,237-13,248,