OWLETS-1: Ozone and Nitrogen Dioxide Measurements Over Chesapeake Bay

OWLETS-1 Pandora Spectrometer Project data provides ozone and nitrogen dioxide measurements from a multi-site field campaign over the Chesapeake Bay. The dataset was collected from July 5 to August 3, 2017, using a combination of ground-based Pandora spectrometers, mobile, and ship-based platforms to study pollutant gradients across the land-water interface. It was supported by NASA's Science Innovation Fund to address measurement gaps in coastal air quality research.

Use Cases

• Analyzing ozone and nitrogen dioxide concentration gradients between land and water sites.
• Studying diurnal and spatial variability of pollutants during a summer coastal field campaign.
• Validating satellite-based tropospheric column measurements of NO2 and ozone.
• Investigating the impact of coastal meteorology on local air quality formation and transport.

Strengths

• Data originates from a coordinated NASA field campaign with synchronous measurements at multiple fixed and mobile sites.
• Covers a specific, intensive observation period (July 5 – August 3, 2017) with twelve dedicated measurement days.
• Integrates measurements from a unique multi-platform strategy including Pandora spectrometers, lidars, and mobile observations.

Limitations

• Column names and specific data structure are unknown, limiting immediate usability.
• Conflicting 'last updated' metadata (2017 vs. 2026) suggests potential provenance or versioning issues.
• Dataset size and row counts are not provided, making data volume and granularity unclear.

Provenance

Source

NASA GSFC Pandora Spectrometer Project, NASA Langley Research Center ASDC.

Collection Method

Field campaign measurements using Pandora spectrometer instruments at fixed and mobile sites.

Time Range

July 5, 2017 – August 3, 2017 (primary campaign).

Freshness

2026-04-09 23:24:33.642793 (most recent update across platforms, though conflicts with an earlier date)

Geography

Chesapeake Bay region, including NASA LaRC, Chesapeake Bay Bridge Tunnel, and other sites in Virginia.