Real-World Vehicle Emissions of Carbonyl Compounds from a Rio de Janeiro Tunnel

Real-world vehicle emissions of carbonyl compounds were measured in the Rebouças Tunnel in Rio de Janeiro, Brazil. The dataset includes 16 samples collected at two points inside the 2840-meter tunnel on 8 different days, with approximately 5,000 vehicles per hour passing through. Emission factors and ozone-forming potentials for formaldehyde and acetaldehyde were calculated using two methods, with results reported by José Claudino Souza Almeida.

Use Cases

• Calculate real-world emission factors for carbonyl compounds based on tunnel sampling data.
• Compare emission estimation methods (Pierson vs. fuel consumption) using the reported factor values.
• Assess ozone-forming potential of vehicle emissions based on the provided formaldehyde and acetaldehyde OFP estimates.
• Model urban air quality impacts from light-duty vehicle traffic using the measured compound concentrations.

Strengths

• Provides real-world emission factors for key carbonyl compounds (formaldehyde, acetaldehyde) calculated via two distinct methods.
• Includes ozone-forming potential (OFP) estimates, adding environmental impact context to the emission data.
• Sampling was conducted at two locations (500m and 1500m) inside a major urban tunnel, capturing in-situ conditions.

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

paperswithcode

Collection Method

Samples collected inside the Rebouças Tunnel; emission factors calculated using Pierson and fuel consumption methods.

Time Range

Sampling occurred over 8 different days; specific dates are not provided.

Freshness

Last updated date is unknown.

Geography

Rebouças Tunnel, Rio de Janeiro, Brazil.