Surface Optimized CH4 Fluxes
Surface Optimized CH4 Fluxes
CH4 Fluxes from Atmospheric Inversions
Lsce_ref (details)
Lsce_ohcte (details)
Lsce_noaa (details)
Lsce_all (details)
Lsce_obs05 (details)
Lsce_obs15 (details)
Lsce_var_sat (details)



Speed:
See below for fluxes description.




CH4 MEAN FLUX FOR CURRENT REGION

Inversion
Product
Mean Flux
[TgCH4/year]
Area (km2)
LSCE_REF
LSCE_OHCTE
LSCE_NOAA
LSCE_ALL
Inversion
Product
Mean Flux
[TgCH4/year]
Area (km2)
LSCE_OBS05
LSCE_OBS15
LSCE_VAR_SAT

Note : These numerical values correspond exactly to the appropriate region defined in the
"Flux Time Series" menu


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.

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