Dynamical drivers of free-tropospheric ozone increases over equatorial Southeast Asia

Stauffer, Ryan M.; Thompson, Anne M.; Kollonige, Debra E.; Komala, Ninong; Al-Ghazali, Habib Khirzin; Risdianto, Dian Yudha; Dindang, Ambun; Fairudz bin Jamaluddin, Ahmad; Sammathuria, Mohan Kumar; Zakaria, Norazura Binti; Johnson, Bryan J.; Cullis, Patrick D.

doi:https://doi.org/10.5194/acp-24-5221-2024

Articles | Volume 24, issue 9

https://doi.org/10.5194/acp-24-5221-2024

© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.

Special issue:

Tropospheric Ozone Assessment Report Phase II (TOAR-II) Community...

https://doi.org/10.5194/acp-24-5221-2024

© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 24, issue 9

Research article

|

06 May 2024

Research article |

| 06 May 2024

Dynamical drivers of free-tropospheric ozone increases over equatorial Southeast Asia

Ryan M. Stauffer, Anne M. Thompson, Debra E. Kollonige, Ninong Komala, Habib Khirzin Al-Ghazali, Dian Yudha Risdianto, Ambun Dindang, Ahmad Fairudz bin Jamaluddin, Mohan Kumar Sammathuria, Norazura Binti Zakaria, Bryan J. Johnson, and Patrick D. Cullis

Data sets

Southern Hemisphere ADditional OZonesondes (SHADOZ) Version 06 (V06) Station Data (Version V06) NASA Goddard Space Flight Center (GSFC) SHADOZ Team https://doi.org/10.57721/SHADOZ-V06

MERRA-2 inst3_3d_asm_Np: 3d,3-Hourly,Instantaneous,Pressure-Level,Assimilation,Assimilated Meteorological Fields V5.12.4 Global Modeling and Assimilation Office (GMAO) https://doi.org/10.5067/QBZ6MG944HW0

MERRA-2 tavgM_2d_slv_Nx: 2d,Monthly mean,Time-Averaged,Single-Level,Assimilation,Single-Level Diagnostics V5.12.4 Global Modeling and Assimilation Office (GMAO) https://doi.org/10.5067/AP1B0BA5PD2K

Globally gridded satellite observations for climate studies (https://www.ncei.noaa.gov/data/geostationary-ir-channel-brightness-temperature-gridsat-b1/access/) Kenneth R. Knapp et al. https://doi.org/10.1175/2011bams3039.1

NOAA Climate Data Record (CDR) of monthly outgoing longwave radiation (OLR), version 2.7 Hai-Tien Lee and NOAA CDR Program https://doi.org/10.7289/V5W37TKD

Aqua/AIRS L3 Monthly Standard Physical Retrieval (AIRS-only) 1 degree x 1 degree V7.0 AIRS project https://doi.org/10.5067/UBENJB9D3T2H

MODIS/Aqua+Terra Thermal Anomalies/Fire locations 1km FIRMS V006 NRT (Vector data) Land Atmosphere Near Real-Time Capability For EOS Fire Information For Resource Management System https://doi.org/10.5067/FIRMS/MODIS/MCD14DL.NRT.0061

Short summary

SHADOZ balloon-borne ozone measurements over equatorial Southeast Asia from 1998–2022 reveal that ozone increases during the early months of the year are linked to reduced convective storm activity, which typically redistributes and cleans the atmosphere of ozone. These findings challenge models to replicate the trends produced by the SHADOZ and meteorological observations and emphasize the importance of studying monthly or seasonal instead of annual changes for understanding ozone trends.