TransCom 3: Annual Mean CO2 Flux Estimates from Atmospheric Inversions

Sixteen atmospheric transport models were used to estimate annual average surface-atmosphere CO2 fluxes for the 1992-1996 period, quantifying uncertainty in the global carbon budget. This Level 1 dataset provides forward simulation fields, response functions, and estimated fluxes from a standardized inversion setup using GLOBALVIEW-CO2 concentration data. The results are central to diagnosing how transport model errors contribute to uncertainty in carbon source and sink calculations.

Use Cases

• Benchmarking atmospheric transport model performance based on intercomparison results.
• Quantifying uncertainty in regional and global carbon flux estimates derived from inversion methodology.
• Analyzing the sensitivity of flux estimates to prior information and transport errors.
• Validating new atmospheric inversion frameworks against a multi-model ensemble.

Strengths

• Results from a standardized intercomparison of 16 different atmospheric transport models.
• Provides quantified uncertainty for carbon budget calculations from a key methodological phase (TransCom 3).
• Based on a common inversion setup and annual mean data for a defined five-year period (1992-1996).

Limitations

• Column names and specific data structure are not provided in the metadata.
• Conflicting 'last updated' dates (2026 vs. 1996) suggest potential metadata errors.
• Dataset size and row counts are unknown, limiting assessment of data volume.

Provenance

Source

Atmospheric Tracer Transport Model Intercomparison Project (TransCom), associated with NASA.

Collection Method

Model output and inversion results from a controlled intercomparison experiment using a common setup.

Time Range

1992-1996

Freshness

2026-04-09 21:28:36.093907

Geography

Global