Global Modeling Initiative Atmospheric Chemistry Output for ATom Campaigns

This dataset provides Global Modeling Initiative (GMI) Chemical Transport Model outputs for the four ATom (Atmospheric Tomography) flight campaigns. The 3-D model simulates concentrations of numerous chemical species measured during ATom, with a horizontal resolution of 1.0 x 1.25 degrees and output generated every 15 minutes. It is produced by NASA and includes both ICARTT files interpolated to the flight track and 3D netCDF files at the original model resolution.

Use Cases

• Validating in-situ atmospheric chemical measurements from the ATom aircraft campaigns against model simulations.
• Analyzing the 3D spatial distribution of simulated chemical species like nitrogen oxides and carbon compounds around flight tracks.
• Studying temporal evolution of atmospheric chemistry with 15-minute resolution model output.
• Investigating troposphere-stratosphere chemical interactions using a model with full chemistry for both regions.

Strengths

• Model provides high temporal resolution output every 15 minutes.
• Covers full chemistry for both the troposphere and stratosphere.
• Includes data from four distinct ATom field campaigns.
• Offers multiple data products: ICARTT files interpolated to flight path and original 3D netCDF grids.

Limitations

• Specific column names, row counts, and total dataset size are not provided by any source.
• Sources conflict on the last update date, reporting either 2018 or a future date of 2026.
• License is ambiguously listed as 'other-license-specified' without clear terms.

Provenance

Source

National Aeronautics and Space Administration (NASA)

Collection Method

Output from the Global Modeling Initiative (GMI) 3-D Chemical Transport Model, interpolated to ATom flight tracks.

Time Range

Periods covering the four ATom flight campaigns.

Freshness

2026-03-13 14:04:38.844627

Geography

Global, with specific 3D regional output surrounding the ATom flight tracks.