Models: CT2026 optimized fluxes are shown by default. Other CarbonTracker releases may also be shown for inter-model comparison. Displayed errors are internal model errors summed in quadrature with inter-model errors.

Traces: The traces in this figure represent carbon dioxide emissions for each time period in PgC yr^-1 from the specified region. CarbonTracker models group surface-to-amosphere exchange of CO₂ into four categories, each of which is shown in a different color: fossil fuel emissions (tan), Net Ecosystem Exchange (NEE, green), air-sea gas exchange (blue), and fire (red). Land terrestrial biosphere flux (green) is, by default, plotted as the sum of NEE and fires The total sum net surface exchange (gray) and the sum of natural fluxes (i.e. no fossil fuels (purple) may also be plotted. Negative emissions indicate that the flux removes CO₂ from the atmosphere. Each emissions category can be turned off or on by clicking on its entry in the legend.

Flux type: prior (unoptimized) or posterior (optimized).

Time Aggregation: Monthly, annual, and long-term mean data are available for all models.

Plotting: Either a line, stacked bar, or grouped stacked bar may be plotted. The grouped stacked bar groups by model, and stacks by traces. The title, subtitle, and trace titles may be individually set. Shaded error is not meaningful for either of the bar charts. Up to five models may be compared.