Atmospheric Methane Measurements and Simulations from London, 2018-2020

Atmospheric measurements of methane (CH4) and its carbon-13 isotopic tracer (d13CH4), along with wind data, collected from Imperial College London between March 2018 and October 2020. The dataset also includes atmospheric simulations combining global and UK emissions with back-trajectories. This data was used in a 2022 study by Saboya et al. published in Atmospheric Chemistry and Physics.

Use Cases

• Analyzing urban methane leakage based on continuous atmospheric concentration measurements.
• Attributing methane sources based on isotopic tracer (d13CH4) data.
• Validating atmospheric dispersion models based on combined measurement and simulation data.
• Studying temporal trends in urban air pollution based on a multi-year time series.

Strengths

• Data spans over two and a half years, from March 2018 to October 2020.
• Includes both direct atmospheric measurements and model-based simulations.
• Measurements are averaged to a consistent twenty-minute interval.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Last update date is unknown; freshness unverified.

Provenance

Source

Graven Laboratory at Imperial College London.

Collection Method

Atmospheric measurements made using a Picarro G2201-i isotopic analyzer and processed by GCWerks software. Simulations combine EDGAR and NAEI emissions with NAME back-trajectories.

Time Range

March 2018 to October 2020.

Geography

Measurements taken from the Huxley building at Imperial College London, UK; simulations include global and UK-specific data.