TROPESS PAN Reanalysis: 2005-2021 Tropospheric Concentrations

2005-2021 vertical concentrations of peroxyacetyl nitrate (PAN) are provided by the Tropospheric Chemical Reanalysis v2 (TCR-2). The dataset uses JPL's MOMO-Chem framework to assimilate multiple satellite sensors, optimizing both concentrations and emissions. Data is stored as yearly netCDF4 files with 6-hourly temporal resolution and a spatial grid of 1.125 degrees at 27 pressure levels.

Use Cases

• Analyzing long-term trends in peroxyacetyl nitrate concentrations based on the 2005-2018 time range.
• Modeling tropospheric chemical transport using the 27 vertical pressure levels between 1000 and 60 hPa.
• Assessing emission source impacts via the data assimilation framework that simultaneously optimizes concentrations and emissions.
• Studying spatial distribution of PAN at a global scale using the 1.125 x 1.125 degree grid.

Strengths

• Provides a 17-year time series (2005-2021) for longitudinal analysis.
• Offers high vertical resolution with 27 distinct pressure levels.
• Utilizes a sophisticated multi-species, multi-sensor assimilation framework (MOMO-Chem).

Limitations

• Column names and exact variable definitions are not provided in the metadata.
• The license is ambiguously specified as 'other-license-specified' without details.
• The dataset's freshness is unclear as the last update date is listed but the data period ends in 2021.

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 from multiple satellite sensors.

Time Range

2005-2021

Freshness

2026-04-09 21:38:09.577697

Geography

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