Articles | Volume 21, issue 11
Atmos. Chem. Phys., 21, 9201–9222, 2021
https://doi.org/10.5194/acp-21-9201-2021
Atmos. Chem. Phys., 21, 9201–9222, 2021
https://doi.org/10.5194/acp-21-9201-2021

Research article 16 Jun 2021

Research article | 16 Jun 2021

Quantifying variability, source, and transport of CO in the urban areas over the Himalayas and Tibetan Plateau

Youwen Sun et al.

Data sets

IASI CO V6.5.0 (Version 6.5.0) IASI/Metop Community https://iasi.aeris-data.fr/CO_IASI_C_L3_data/

MEIC V1.3 (Version 1.3) MEIC model Community http://meicmodel.org/?page_id=560

Model code and software

geoschem/geos-chem: GEOS-Chem 12.2.1 (Version 12.2.1) The International GEOS-Chem Community https://doi.org/10.5281/zenodo.2580198

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Short summary
We quantified the variability, source, and transport of urban CO over the Himalayas and Tibetan Plateau (HTP) by using measurement, model simulation, and the analysis of meteorological fields. Urban CO over the HTP is dominated by anthropogenic and biomass burning emissions from local, South Asia and East Asia, and oxidation sources. The decreasing trends in surface CO since 2015 in most cities over the HTP are attributed to the reduction in local and transported CO emissions in recent years.
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