Airborne Aerosol Acidity Observations and Model Comparisons 2006-2017

Airborne observations and model outputs from eleven atmospheric research campaigns conducted between 2006 and 2017. The dataset includes in-situ measurements of sulfate, nitrate, ammonium, and related species, alongside output from nine chemical transport models. It was created to investigate aerosol pH and ammonium balance across polluted and remote regions.

Use Cases

• Validating chemical transport model predictions for sulfate, nitrate, and ammonium concentrations.
• Analyzing spatial trends in aerosol acidity using latitude, longitude, and pressure data from airborne campaigns.
• Comparing in-situ instrument data (e.g., from AMS, CIMS, PALMS) against simulated model outputs.
• Studying the ammonium balance and aerosol pH across gradients from polluted continental to remote oceanic air.

Strengths

• Includes data from eleven distinct airborne campaigns, providing wide geographical sampling.
• Combines in-situ observations with output from nine established chemical transport models for direct comparison.
• Covers a multi-year time range from 2006 to 2017.

Limitations

• Conflicting last updated dates: one source lists 2017-08-01, while others list 2026-03 13.
• Specific row counts, file sizes, and complete column lists are not provided by any source.

Provenance

Source

ORNL_CLOUD

Collection Method

In-situ collection from airborne campaigns using instruments like AMS, CIMS, PALMS, and WAS, paired with output from nine chemical transport models.

Time Range

2006-2017

Freshness

2026-03-13 17:58:19.048725

Geography

Conterminous U.S., Alaska, Mexico, Canada, Greenland, South Korea, and remote areas over the Arctic, Pacific, Southern, and Atlantic Oceans.