Simulating organic aerosol in Delhi with WRF-Chem using the volatility-basis-set approach: exploring model uncertainty with a Gaussian process emulator

Reyes-Villegas, Ernesto; Lowe, Douglas; Johnson, Jill S.; Carslaw, Kenneth S.; Darbyshire, Eoghan; Flynn, Michael; Allan, James D.; Coe, Hugh; Chen, Ying; Wild, Oliver; Archer-Nicholls, Scott; Archibald, Alex; Singh, Siddhartha; Shrivastava, Manish; Zaveri, Rahul A.; Singh, Vikas; Beig, Gufran; Sokhi, Ranjeet; McFiggans, Gordon

doi:https://doi.org/10.5194/acp-23-5763-2023

Articles | Volume 23, issue 10

https://doi.org/10.5194/acp-23-5763-2023

© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-23-5763-2023

© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 23, issue 10

Research article

|

23 May 2023

Research article |

| 23 May 2023

Simulating organic aerosol in Delhi with WRF-Chem using the volatility-basis-set approach: exploring model uncertainty with a Gaussian process emulator

Ernesto Reyes-Villegas, Douglas Lowe, Jill S. Johnson, Kenneth S. Carslaw, Eoghan Darbyshire, Michael Flynn, James D. Allan, Hugh Coe, Ying Chen, Oliver Wild, Scott Archer-Nicholls, Alex Archibald, Siddhartha Singh, Manish Shrivastava, Rahul A. Zaveri, Vikas Singh, Gufran Beig, Ranjeet Sokhi, and Gordon McFiggans

Supplement

https://doi.org/10.5194/acp-23-5763-2023-supplement

Data sets

PROMOTE-emissions (v1.0) Douglas Lowe, Ying Chen, and Gordon McFiggans https://doi.org/10.5281/zenodo.7903352

WRF_UoM_EMIT Douglas Lowe, Scott Archer-Nicholls, Alex Archibald, Ying Chen, Oliver Wild, and Gordon McFiggans https://doi.org/10.5281/zenodo.7903347

PROMOTE_VBS_scenarios Douglas Lowe, Ernesto Reyes-Villegas, and Gordon McFiggans https://doi.org/10.5281/zenodo.7905251

Scenario Configurations for Simulating Organic Aerosol in Delhi using WRF-Chem and a VBS Approach Douglas Lowe, Jill S. Johnson, Ernesto Reyes-Villegas, Ken Carslaw, and Gordon McFiggans https://doi.org/10.5281/zenodo.7904011

Model code and software

promote_wrfchem_scripts (v1.0) Douglas Lowe and Gordon McFiggans https://doi.org/10.5281/zenodo.7905364

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Short summary

Organic aerosols (OAs), their sources and their processes remain poorly understood. The volatility basis set (VBS) approach, implemented in air quality models such as WRF-Chem, can be a useful tool to describe primary OA (POA) production and aging. However, the main disadvantage is its complexity. We used a Gaussian process simulator to reproduce model results and to estimate the sources of model uncertainty. We do this by comparing the outputs with OA observations made at Delhi, India, in 2018.