We present an updated (v2) catalog of NOx emissions from point sources as derived from TROPOMI measurements
of NO2 (PAL product, May 2018 - Nov 2021) combined with wind fields from ERA5. Compared to version 1 of the catalog,
several improvements have been introduced to the algorithm. Most importantly, several corrections are applied, accounting
for the effects of plume height on satellite sensitivity, 3D topographic effects, and the chemical loss of NOx , resulting in
considerably higher and more accurate NOx emissions. In addition, error estimates are provided for each point source, taking
into account the uncertainties of the individual retrieval steps.
The catalog v2 is based on a fully automated iterative detection algorithm of point sources worldwide. It lists 1139 locations
that have been found to be significant NOx sources. The majority of these locations match to power plants listed in the global
power plant database. Other NOx point sources correspond to cement plants, metal smelters, industrial areas, or medium-sized
cities.
Beirle, Steffen; Borger, Christian; Jost, Adrian; Wagner, Thomas (2023). Catalog of NO_x point source emissions (version 2). World Data Center for Climate (WDCC) at DKRZ. https://doi.org/10.26050/WDCC/No_xPointEmissionsV2
In Beirle et al., 2023, NOx emissions of the catalog v2 are compared to emissions reported bei Umweltbundesamt (UBA), Germany, and by Environmental Pr...
Description
In Beirle et al., 2023, NOx emissions of the catalog v2 are compared to emissions reported bei Umweltbundesamt (UBA), Germany, and by Environmental Protection Agency (EPA), USA, and an agreement within 20% on average was found.
FAIR
F-UJI result: total 66 %
Description
Summary: Findable: 6 of 7 level; Accessible: 2 of 3 level; Interoperable: 3 of 4 level; Reusable: 5 of 10 level
SQA - Scientific Quality Assurance 'approved by author'
Result Date
2023-02-03
Technical Quality Assurance (TQA)
TQA - Technical Quality Assurance 'approved by WDCC'
Description
1. Number of data sets is correct and > 0: passed; 2. Size of every data set is > 0: passed; 3. The data sets and corresponding metadata are accessible: passed; 4. The data sizes are controlled and correct: passed; 5. The spatial-temporal coverage description (metadata) is consistent to the data, time steps are correct and the time coordinate is continuous: passed; 6. The format is correct: passed; 7. Variable description and data are consistent: passed
Method
WDCC-TQA checklist
Method Description
Checks performed by WDCC. The list of TQA metrics are documented in the 'WDCC User Guide for Data Publication' Chapter 8.1.1