California Dairy Methane Emissions at 10-km Resolution for 2019

California dairy methane emissions are estimated at a 0.1-degree (~10 km) spatial resolution for the year 2019. This Vista-CA dataset from NASA quantifies emissions from enteric fermentation and manure management, reported in gigagrams per square kilometer per year. It serves as a planning tool for mitigation and validation of emissions reductions.

Use Cases

• Serving as a prior for atmospheric observation-based methane emissions estimates.
• Attributing methane emissions to specific dairy facilities for regulatory or research purposes.
• Planning and validating the effectiveness of manure management and dietary mitigation strategies.
• Providing a spatial baseline for modeling California's agricultural methane contribution.

Strengths

• Provides emissions estimates for two distinct agricultural sources: enteric fermentation and manure management.
• Offers a consistent spatial resolution of 0.1 degrees (~10 km) across the state of California.
• Synthesizes data from multiple public sources including local, state, and federal agencies.

Limitations

• Metadata conflicts exist: the last updated date is reported as both 2026-03 13 and 2019-12-31 across platforms.
• Specific column names, row counts, and file sizes are not provided in any source description.
• Data is limited to a single year (2019), providing a snapshot rather than a temporal trend.

Provenance

Source

National Aeronautics and Space Administration (NASA)

Collection Method

Created utilizing an assortment of publicly available data sources from local, state, and federal agencies, as part of the Vista California (Vista-CA) spatial dataset succession.

Time Range

2019

Freshness

2026,03-13 00:23:35.266983

Geography

State of California, USA