CarbonTracker CH4 is a companion product to CarbonTracker-CO2, producing
estimates of emissions of methane to the atmosphere from natural and anthropogenic sources.
Observation Package (ObsPack) data products are intended to support carbon cycle modeling studies.
They include providers' original data and metadata,
reformatted into the ObsPack framework.
NOAA ESRL GMD is the World Meteorological Organization (WMO), Global Atmosphere Watch (GAW)
Central Calibration Laboratory (CCL) for CO2, CH4, N2O, SF6, and CO.