Part A

Introduction DATA Policy Data Documentation Contact Us

- 13CH4 - Station Country/ Index Contributor Method Data Period Territory Number REGION IV (North and Centrail America) Barrow U. S. A. BRW471N10 NOAA/GMD Either a Micromass Optima or Micromass Isoprime isotope-ratio Mass Spectrometer coupled to a custom built gas-chromatograph and combustion furnace. 1998/1 1999/12 Niwot Ridge U. S. A. NWR440N10 NOAA/GMD Either a Micromass Optima or Micromass Isoprime isotope-ratio Mass Spectrometer coupled to a custom built gas-chromatograph and combustion furnace. 1998/1 1999/12 REGION V (South-West Pacific) Cape Grim Australia CGO540S10 NOAA/GMD Either a Micromass Optima or Micromass Isoprime isotope-ratio Mass Spectrometer coupled to a custom built gas-chromatograph and combustion furnace. 1998/1 1999/12 Mauna Loa U. S. A. MLO519N10 NOAA/GMD Either a Micromass Optima or Micromass Isoprime isotope-ratio Mass Spectrometer coupled to a custom built gas-chromatograph and combustion furnace. 1998/1 1999/12 Tutuila U. S. A. SMO514S10 NOAA/GMD Either a Micromass Optima or Micromass Isoprime isotope-ratio Mass Spectrometer coupled to a custom built gas-chromatograph and combustion furnace. 1998/1 1999/12 Antarctica South Pole U. S. A. / Antarctica SPO789S10 NOAA/GMD Either a Micromass Optima or Micromass Isoprime isotope-ratio Mass Spectrometer coupled to a custom built gas-chromatograph and combustion furnace. 1998/1 1999/12

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