NARSTO PAC2001: Air Quality Measurements from Langley Site

NARSTO_PAC2001_LANGLEY_GAS_PM_MET_DATA was collected by NASA during the Pacific 2001 Air Quality Study from August 8 to September 2, 2001. The dataset includes detailed measurements of gaseous pollutants, particulate matter, and meteorological parameters at a site near Langley, British Columbia. Measurements were intended to study particle and ozone formation, with an emphasis on the transition from urban to suburban/rural settings and the impact of agricultural sources.

Use Cases

• Modeling secondary particulate matter formation based on detailed gas phase measurements of NOx, O3, VOCs, and NH3.
• Analyzing the impact of agricultural sources on air quality based on measurements taken in a region with mushroom and chicken farming.
• Studying gas-particle partitioning of semi-volatile organic compounds based on Hi-cap denuder sampling system data.
• Investigating the spatial evolution of pollutants based on measurements related to mapping fine PM horizontal and vertical distribution.
• Correlating meteorological conditions with pollution events based on concurrent measurements of atmospheric parameters.

Strengths

• Data collection spanned a focused 26-day period from August 8 to September 2, 2001, providing a detailed snapshot.
• Measurements cover five categories including precursors, PM characterization, emissions, distribution mapping, and meteorology.
• Includes high-time resolution measurements for particle size distribution from 0.06 to 0.7 mm.
• Site location is precisely documented at 49.0289 N, -122.6025 W, 90m above sea level.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count and dataset size are unknown, which may limit suitability assessment.
• Data is from a single, short-term campaign in 2001; temporal generalizability is limited.

Provenance

Source

National Aeronautics and Space Administration

Collection Method

On-site measurements conducted from five temporary labs with inlets about 5m above ground during the Pacific 2001 Air Quality Study.

Time Range

August 8 to September 2, 2001, with intensive measurements from August 13th to 31st.

Freshness

Last updated 2026-03-12 23:56:15.510966; freshness should be verified.

Geography

Langley Ecole Lochiel site in British Columbia, Canada (49.0289 N, -122.6025 W), approximately 6 km from the town of Langley and 10 km from major highways.