This is a near-real-time (NRT) release of CarbonTracker (CT). Data presented here are NOT finalized, and represent a best guess based on currently available data.

Models: The optimized posteriors of the CT-2022 release and the CT-NRT 2025.1 release are plotted by default. The shown error is the internal model error summed in quadrature with the cross-model error from the runs with different priors. Other CarbonTracker releases may also be shown for inter-model comparison.

Traces: The traces in this figure represent carbon dioxide emissions for each month 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, and such sinks extend below zero.

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

Time Aggregation: Annual and monthly data are available for all models. Longterm fluxes are long-term averages.

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.