Articles | Volume 21, issue 20
Atmos. Chem. Phys., 21, 15569–15587, 2021
https://doi.org/10.5194/acp-21-15569-2021
Atmos. Chem. Phys., 21, 15569–15587, 2021
https://doi.org/10.5194/acp-21-15569-2021

Research article 18 Oct 2021

Research article | 18 Oct 2021

Direct estimates of biomass burning NOx emissions and lifetimes using daily observations from TROPOMI

Xiaomeng Jin et al.

Data sets

TROPOMI Level 2 Nitrogen Dioxide total column products. Version 01 Copernicus Sentinel-5P (processed by ESA) https://doi.org/10.5270/S5P-s4ljg54

TROPOMI Level 2 Aerosol Layer Height products. Version 01 Copernicus Sentinel-5P (processed by ESA) https://doi.org/10.5270/S5P-j7aj4gr

ERA5 hourly data on pressure levels from 1979 to present H. Hersbach, B. Bell, P. Berrisford, G. Biavati, A. Horányi, J. Muñoz Sabater, J. Nicolas, C. Peubey, R. Radu, I. Rozum, D. Schepers, A. Simmons, C. Soci, D. Dee, and J.-N. Thépaut https://doi.org/10.24381/cds.bd0915c6

MODIS Collection 6 Hotspot/Active Fire Detections MCD14ML NASA FIRMS https://doi.org/10.5067/FIRMS/MODIS/MCD14ML

NRT VIIRS 375m Ac- tive Fire product VNP14IMGT NASA FIRMS https://doi.org/10.5067/FIRMS/VIIRS/VNP14IMGT_NRT.002

MCD19A2 MODIS/Terra+Aqua Land Aerosol Optical Depth Daily L2G Global 1km SIN Grid V006 A. Lyapustin and Y. Wang https://doi.org/10.5067/MODIS/MCD19A2.006

GEOS Composition Forecast (GEOS-CF) products NASA GMAO https://gmao.gsfc.nasa.gov/weather_prediction/GEOS-CF/data_access/

Model code and software

PECANS (Python Editable Chemical Atmospheric Numeric Solver) J. L. Laughner https://doi.org/10.5281/zenodo.3386652

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Short summary
We describe direct estimates of NOx emissions and lifetimes for biomass burning plumes using daily TROPOMI retrievals of NO2. Satellite-derived NOx emission factors are consistent with those from in situ measurements. We observe decreasing NOx lifetime with fire intensity, which is due to the increase in NOx abundance and radical production. Our findings suggest promise for applying space-based observations to track the emissions and chemical evolution of reactive nitrogen from wildfires.
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