Global Wetland Methane Emissions Ensemble with 18 Model Configurations

Global monthly wetland methane emissions are estimated at a 0.5-degree resolution from January 2001 to August 2022. The WetCHARTs v1.3.3 dataset is derived from an ensemble of 18 model configurations combining terrestrial biosphere models, wetland extent scenarios, and temperature dependencies. This process-informed product from ORNL_CLOUD is intended for atmospheric chemistry and transport modeling.

Use Cases

• Comparing emissions estimates across the 18 model configurations to assess uncertainty and sensitivity.
• Inputting gridded monthly methane flux data into atmospheric chemistry and transport models.
• Analyzing long-term (2001-2022) trends in global wetland methane emissions.
• Studying the spatial distribution of methane sources at a 0.5-degree resolution.

Strengths

• Provides an ensemble of 18 model configurations, allowing direct analysis of uncertainty and sensitivity.
• Offers a long temporal record covering over 21 years of monthly data from 2001 to 2022.
• Has a consistent global spatial coverage at a 0.5 by 0.5-degree resolution.
• Is an updated version (v1.3.3) of a prior dataset, indicating ongoing refinement.

Limitations

• Key metadata conflicts exist: the 'last updated' date is listed as both 2022-08-31 and 2026-03 13 across different platform entries.
• Specific column names, row counts, and dataset size are not provided by any source.
• The license is specified only as 'other-license-specified', requiring users to investigate terms.

Provenance

Source

ORNL_CLOUD

Collection Method

Derived from an ensemble of multiple terrestrial biosphere models, wetland extent scenarios, and CH4:C temperature dependencies.

Time Range

2001-01-01 to 2022-08-31

Freshness

2026-03-13 18:24:10.586718

Geography

Global