Part A

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This CD (Part A) includes metadata only. To access observational data, please see Part B, C, and D. Greenhouse Gases (See CD-ROM Part B) CO2 CH4 N2O Greenhouse Gases (See CD-ROM Part C) HFCs SF6 CFCs HCFCs CCl4 CH3CCl3 CHCl3 CH2Cl2 C2Cl4 CH3Cl CH3Br O3 Other Related Gases (See CD-ROM Part D) CO VOCs SO2 NOx NO NO2 NOy ROOH PAN H2 H2O2 222Rn 13CH4 13CO2 C18O2 Data accepted by November 2006

The WDCGG is operated by the Japan Meteorological Agency in cooperation with the World Meteorological Organization