Sulfuric acid in the Amazon basin: measurements  and evaluation of existing sulfuric acid proxies

Myers, Deanna C.; Kim, Saewung; Sjostedt, Steven; Guenther, Alex B.; Seco, Roger; Vega Bustillos, Oscar; Tota, Julio; Souza, Rodrigo A. F.; Smith, James N.

doi:https://doi.org/10.5194/acp-22-10061-2022

Articles | Volume 22, issue 15

https://doi.org/10.5194/acp-22-10061-2022

© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-22-10061-2022

© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 22, issue 15

Research article

|

05 Aug 2022

Research article |

| 05 Aug 2022

Sulfuric acid in the Amazon basin: measurements and evaluation of existing sulfuric acid proxies

Deanna C. Myers, Saewung Kim, Steven Sjostedt, Alex B. Guenther, Roger Seco, Oscar Vega Bustillos, Julio Tota, Rodrigo A. F. Souza, and James N. Smith

Supplement

https://doi.org/10.5194/acp-22-10061-2022-supplement

Data sets

Campaign Datasets for Observations and Modeling of the Green Ocean Amazon (GoAmazon) ARM https://doi.org/10.5439/1346559

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Short summary

We present the first measurements of gas-phase sulfuric acid from the Amazon basin and evaluate the efficacy of existing sulfuric acid parameterizations in this understudied region. Sulfuric acid is produced during the daytime and nighttime, though current proxies underestimate nighttime production. These results illustrate the need for better parameterizations of sulfuric acid and its precursors that are informed by measurements across a broad range of locations.