TROPESS TCR-2: Nitrate Aerosol Surface Concentrations

Nitrate aerosol surface concentrations are provided at a 2-hourly resolution from 2005 to 2021. The data is part of the Tropospheric Chemical Reanalysis v2 (TCR-2), produced using JPL's MOMO-Chem framework that assimilates multiple satellite sensors. Files are in netCDF format with a spatial resolution of 1.125 x 1.125 degrees.

Use Cases

• Analyzing temporal trends in nitrate pollution based on the 2-hourly time series.
• Mapping global surface aerosol concentrations based on the 1.125-degree spatial grid.
• Assessing the impact of emissions on atmospheric composition using the data assimilation framework.
• Validating chemical transport models with reanalysis-derived concentration fields.

Strengths

• Provides a 17-year time series (2005-2021) for longitudinal analysis.
• Uses a sophisticated multi-species, multi-sensor assimilation framework (MOMO-Chem) for consistency.
• Offers high temporal granularity with 2-hourly data points.
• Has a defined spatial resolution of 1.125 x 1.125 degrees.

Limitations

• Column names and specific variable metadata are not provided in the sources.
• Sources show conflicting last updated dates (2026-04-09 and 2021-12-31), indicating potential metadata inconsistency.
• The dataset's size and exact row count are unknown.

Provenance

Source

GES_DISC, with Principal Investigator Kazuyuki Miyazaki.

Collection Method

Generated using JPL's Multi-mOdel Multi-cOnstituent Chemical (MOMO-Chem) data assimilation framework.

Time Range

2005-2021

Freshness

2026-04-09 21:37:32.417688

Geography

Global, with a 1.125 x 1.125 degree spatial grid.