Articles | Volume 24, issue 3
https://doi.org/10.5194/acp-24-1979-2024
https://doi.org/10.5194/acp-24-1979-2024
Research article
 | 
14 Feb 2024
Research article |  | 14 Feb 2024

Influences of downward transport and photochemistry on surface ozone over East Antarctica during austral summer: in situ observations and model simulations

Imran A. Girach, Narendra Ojha, Prabha R. Nair, Kandula V. Subrahmanyam, Neelakantan Koushik, Mohammed M. Nazeer, Nadimpally Kiran Kumar, Surendran Nair Suresh Babu, Jos Lelieveld, and Andrea Pozzer

Related authors

Comprehensive multiphase chlorine chemistry in the box model CAABA/MECCA: implications for atmospheric oxidative capacity
Meghna Soni, Rolf Sander, Lokesh K. Sahu, Domenico Taraborrelli, Pengfei Liu, Ankit Patel, Imran A. Girach, Andrea Pozzer, Sachin S. Gunthe, and Narendra Ojha
Atmos. Chem. Phys., 23, 15165–15180, https://doi.org/10.5194/acp-23-15165-2023,https://doi.org/10.5194/acp-23-15165-2023, 2023
Short summary
Variations in O3, CO, and CH4 over the Bay of Bengal during the summer monsoon season: shipborne measurements and model simulations
Imran A. Girach, Narendra Ojha, Prabha R. Nair, Andrea Pozzer, Yogesh K. Tiwari, K. Ravi Kumar, and Jos Lelieveld
Atmos. Chem. Phys., 17, 257–275, https://doi.org/10.5194/acp-17-257-2017,https://doi.org/10.5194/acp-17-257-2017, 2017
Short summary

Related subject area

Subject: Gases | Research Activity: Field Measurements | Altitude Range: Troposphere | Science Focus: Chemistry (chemical composition and reactions)
Seasonal air concentration variability, gas–particle partitioning, precipitation scavenging, and air–water equilibrium of organophosphate esters in southern Canada
Yuening Li, Faqiang Zhan, Chubashini Shunthirasingham, Ying Duan Lei, Jenny Oh, Amina Ben Chaaben, Zhe Lu, Kelsey Lee, Frank A. P. C. Gobas, Hayley Hung, and Frank Wania
Atmos. Chem. Phys., 25, 459–472, https://doi.org/10.5194/acp-25-459-2025,https://doi.org/10.5194/acp-25-459-2025, 2025
Short summary
Measurement report: Surface exchange fluxes of HONO during the growth process of paddy fields in the Huaihe River Basin, China
Fanhao Meng, Baobin Han, Min Qin, Wu Fang, Ke Tang, Dou Shao, Zhitang Liao, Jun Duan, Yan Feng, Yong Huang, Ting Ni, and Pinhua Xie
Atmos. Chem. Phys., 24, 14191–14208, https://doi.org/10.5194/acp-24-14191-2024,https://doi.org/10.5194/acp-24-14191-2024, 2024
Short summary
Molecular and seasonal characteristics of organic vapors in urban Beijing: insights from Vocus-PTR measurements
Zhaojin An, Rujing Yin, Xinyan Zhao, Xiaoxiao Li, Yuyang Li, Yi Yuan, Junchen Guo, Yiqi Zhao, Xue Li, Dandan Li, Yaowei Li, Dongbin Wang, Chao Yan, Kebin He, Douglas R. Worsnop, Frank N. Keutsch, and Jingkun Jiang
Atmos. Chem. Phys., 24, 13793–13810, https://doi.org/10.5194/acp-24-13793-2024,https://doi.org/10.5194/acp-24-13793-2024, 2024
Short summary
The variations in volatile organic compounds based on the policy change for Omicron in the traffic hub of Zhengzhou
Bowen Zhang, Dong Zhang, Zhe Dong, Xinshuai Song, Ruiqin Zhang, and Xiao Li
Atmos. Chem. Phys., 24, 13587–13601, https://doi.org/10.5194/acp-24-13587-2024,https://doi.org/10.5194/acp-24-13587-2024, 2024
Short summary
On the dynamics of ozone depletion events at Villum Research Station in the High Arctic
Jakob Boyd Pernov, Jens Liengaard Hjorth, Lise Lotte Sørensen, and Henrik Skov
Atmos. Chem. Phys., 24, 13603–13631, https://doi.org/10.5194/acp-24-13603-2024,https://doi.org/10.5194/acp-24-13603-2024, 2024
Short summary

Cited articles

Ajayakumar, R. S., Nair, P. R., Girach, I. A., Sunilkumar, S. V., Muhsin, M., and Chandran, P. S.: Dynamical nature of tropospheric ozone over a tropical location in Peninsular India: Role of transport and water vapour. Atmos. Environ.. 218, 117018, https://doi.org/10.1016/j.atmosenv.2019.117018, 2019. 
Ali, K., Trivedi, D. K., and Sahu, S. K.: Surface ozone characterization at Larsemann Hills and Maitri, Antarctica, Sci. Total Environ., 584–585, 1130–1137, https://doi.org/10.1016/j.scitotenv.2017.01.173, 2017. 
Australian Bureau of Meteorology: Ozonesonde, World Ozone and Ultraviolet Radiation Data Centre [data set], https://woudc.org/data/explore.php (last access: 1 January 2024), 2023. 
Barrie, L. A., Bottenheim, J. W., Schnell, R. C., Crutzen, P. J., and Rasmussen, R. A.: Ozone destruction and photochemical reactions at polar sunrise in the lower Arctic atmosphere, Nature, 334, 138–141, https://doi.org/10.1038/334138a0, 1988. 
Bartusek, S., Wu, Y., Ting, M., Zheng, C., Fiore, A., Sprenger, M., and Flemming, J.: Higher-Resolution Tropopause Folding Accounts for More Stratospheric Ozone Intrusions, Geophys. Res. Lett., 50, e2022GL101690, https://doi.org/10.1029/2022GL101690, 2023. 
Download
Short summary
We investigate surface ozone variability in East Antarctica based on measurements and EMAC global model simulations during austral summer. Nearly half of the surface ozone is found to be of stratospheric origin. The east coast of Antarctica acts as a stronger sink of ozone than surrounding regions. Photochemical loss of ozone is counterbalanced by downward transport of ozone. The study highlights the intertwined role of chemistry and dynamics in governing ozone variations over East Antarctica.
Altmetrics
Final-revised paper
Preprint