TROPESS NO2: Tropospheric Nitrogen Dioxide Reanalysis

TROPESS Chemical Reanalysis NO2 provides 6-hourly 3-dimensional concentrations of nitrogen dioxide from 2005 to 2021. The dataset uses JPL's MOMO-Chem framework to assimilate multiple satellite sensors, simultaneously optimizing concentrations and emissions. Each netCDF file contains a year of data at a spatial resolution of 1.125 degrees across 27 vertical pressure levels.

Use Cases

• Analyzing long-term trends in nitrogen dioxide concentrations based on the 17-year time series.
• Studying vertical distribution of pollutants across 27 pressure levels from 1000 to 60 hPa.
• Validating emission inventories using the data assimilation framework that optimizes both concentrations and emissions.
• Assessing global atmospheric chemistry model performance against the satellite-constrained reanalysis.

Strengths

• Provides a 17-year continuous record (2005-2021) for longitudinal analysis.
• Offers high temporal resolution with 6-hourly data points.
• Includes 3-dimensional vertical profiles across 27 distinct pressure levels.

Limitations

• Column names and specific variable metadata are not provided in the source descriptions.
• The spatial resolution of 1.125 degrees may be coarse for localized studies.
• License information is inconsistently reported as 'other-license-specified' or 'None' across platforms.

Provenance

Source

GES_DISC (NASA), with principal investigator Kazuyuki Miyazaki.

Collection Method

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

Time Range

2005-2021

Freshness

2026-04-09 21:25:12.979929

Geography

Global coverage at a spatial resolution of 1.125 x 1.125 degrees.