Measurement report: The importance of biomass burning in light extinction and direct radia

Xi'an, China, is the location for real-time measurements of aerosol optical properties and direct radiative effect before and during the COVID-19 lockdown. The dataset, from the Chinese Academy of Sciences, includes analysis of light extinction coefficients and contributions from sources like organic aerosol and biomass burning. It highlights the increased relative impact of biomass burning on aerosol radiative forcing during the lockdown period.

Use Cases

• Modeling the direct radiative effect of aerosols based on measured light extinction coefficients.
• Analyzing the impact of reduced anthropogenic emissions on aerosol optical properties during the COVID-19 lockdown.
• Quantifying the contribution of biomass burning to urban light extinction and radiative forcing.
• Studying source apportionment of aerosol optical properties using hybrid environmental receptor models.

Strengths

• Measurements were conducted in real-time, providing high temporal resolution data.
• Analysis employs multiple statistical models, including generalized addictive model and ridge regression.
• Focuses on a specific, significant event (COVID-19 lockdown) for a controlled comparison of emission impacts.

Limitations

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

Provenance

Source

Jie Tian, Chinese Academy of Sciences

Collection Method

A series of real-time measurements conducted in an urban area.

Time Range

Periods before and during the COVID-19 lockdown.

Geography

Urban area of Xi'an, China.