In:
Frontiers in Environmental Science, Frontiers Media SA, Vol. 11 ( 2023-9-14)
Abstract:
The spatial gradient in near-surface ozone (O 3 ) is controlled by its production, sink, and net transport (advection/convection and diffusive) in the atmosphere. In this work, we used continuous long-term measurements of O 3 , oxides of nitrogen (NO x = NO + NO 2 ), and meteorological data in the suburban location of Shadnagar, India. Data analyses were performed to investigate the governing processes that control O 3 variability on diurnal and seasonal time scales. The role of chemistry in O 3 variability, including both formation and destruction processes, was investigated using known chemical kinetics and a radiative transfer model. The residual between observations and chemical estimation was further analyzed to examine the role of transport and unresolved processes/uncertainty in the dataset. The O 3 residual was duly validated using model reanalysis data of O 3 and meteorological parameters to further estimate the O 3 transport. Our analyses show that the average net production and net transport of near-surface O 3 are 3.18 and 0.87 ppbv/h, respectively, while horizontal advection is 0.01 ppbv/h in the daytime. The production of ozone was found to be dominant, indicating the influx of ozone at the site. Overall, our results highlight that spatio-temporal variability in near-surface ozone is strongly controlled by net production in Shadnagar and may be applicable in similar environments globally.
Type of Medium:
Online Resource
ISSN:
2296-665X
DOI:
10.3389/fenvs.2023.1178833
DOI:
10.3389/fenvs.2023.1178833.s001
Language:
Unknown
Publisher:
Frontiers Media SA
Publication Date:
2023
detail.hit.zdb_id:
2741535-1
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