Land data gaps complicate Paris Agreement progress tracking
Differences in how countries report land greenhouse-gas emissions and removals make it difficult to compare national inventories with mitigation targets, according to a PBL publication. The assessment also says bookkeeping and integrated-assessment models provide Paris-aligned benchmarks that are not readily comparable with national data, leaving land a blind spot in progress tracking.
Land carbon fluxes are important to monitoring progress under the Paris Agreement, but comparisons across countries remain difficult. A PBL publication says data-comparability problems persist between national land greenhouse-gas inventories and the mitigation targets countries set.
The publication also identifies a gap between national reporting and the benchmarks produced by land models. It refers to both bookkeeping models and integrated-assessment models as sources of Paris-aligned benchmarks for land.
According to the source, differences in the available data and methods prevent a clear comparison between these reporting systems. The publication describes land as a blind spot in efforts to track progress under the agreement because the relevant information is not consistently comparable.
The source does not provide a specific remedy, implementation timetable, country-by-country comparison, or quantified estimate of the effect of the data gaps. It identifies improved comparability between inventories, mitigation targets, and model-based benchmarks as the central unresolved issue.
THE QUESTIONS THIS EVENT LEAVES BEHIND
Which reporting differences most affect comparisons between national land inventories and mitigation targets?
How might countries’ land policies change if model-based benchmarks showed less progress than national inventories?
Who decides which land accounting methods should serve as the basis for Paris Agreement comparisons?
What consequences could follow if land-related progress remains difficult to measure?
How would more comparable land data alter assessments of countries’ climate commitments?
YOUR QUESTION
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GLOBAL CURIOSITY MAP · SEPTEMBER 2026