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| See below for fluxes description. | |||
Fluxes Description
Mean Flux:
By convention, positive sign for sources of CH4 to the atmosphere and negative sign for sinks
of CH4 from the atmosphere. These fluxes can be directly compared with the results of large-scale independent
bottom-up models, inventories of accounting systems.
Flux Anomalies:
A long term mean flux climatology over the period is subtracted from either the yearly mean or
from the selected monthly mean flux. Flux anomalies maps are especially useful to understand how 'abnormal' was
the CH4 balance of a given region during a specific period as compared to its long-term mean value. For instance,
the big 1997-1998 El Niño and the drought years at northern mid latitudes in 2002, 2003 and 2005 have caused
large anomalies in CH4 fluxes.
Total flux : total surface emissions of methane with soil uptake deduced
wetlands flux: methane emissions due to natural and anthropogenic wetlands.
biomass burning flux: methane emisions due to biomass burning.
others fluxes: All other processes emitting except wetlands and biomass burning.


