Preprints
https://doi.org/10.5194/egusphere-2023-771
https://doi.org/10.5194/egusphere-2023-771
16 May 2023
 | 16 May 2023

Carbon monoxide cycling in the Ria Formosa Lagoon (southern Portugal) during summer 2021

Guanlin Li, Damian L. Arévalo-Martínez, Riel Carlo O. Ingeniero, and Hermann W. Bange

Abstract. Carbon monoxide (CO) is an atmospheric trace gas that plays a crucial role in the oxidizing capacity of the Earth’s atmosphere. Moreover, it functions as an indirect greenhouse gas, influencing the lifetimes of potent greenhouse gases such as methane. Albeit being an overall source of atmospheric CO, the role of coastal regions in the marine cycling of CO and how its budget can be affected by anthropogenic activities, remain uncertain. Here, we present the first measurements of dissolved CO in the Ria Formosa Lagoon, an anthropogenically influenced system in southern Portugal. The dissolved CO concentrations in the surface layer ranged from 0.16 to 3.1 nmol L−1 with an average concentration of 0.75 ± 0.57 nmol L−1. The CO saturation ratio ranged from 1.7 to 32.2, indicating that the lagoon acted as a source of CO to the atmosphere in May 2021. The estimated average sea-to-air flux density was 1.53 μmol m−2 d−1, mainly fueled by CO photochemical production. Microbial consumption accounted for 83 % of the CO production, suggesting that the resulting CO emissions to the atmosphere were modulated by microbial consumption in the surface waters of the Ria Formosa Lagoon. The results from an irradiation experiment with aquaculture effluent water indicated that aquaculture facilities in the Ria Formosa Lagoon seem to be a negligible source of atmospheric CO.

Publisher's note: Copernicus Publications remains neutral with regard to jurisdictional claims made in the text, published maps, institutional affiliations, or any other geographical representation in this preprint. The responsibility to include appropriate place names lies with the authors.
Guanlin Li, Damian L. Arévalo-Martínez, Riel Carlo O. Ingeniero, and Hermann W. Bange

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • CC1: 'Comment on egusphere-2023-771', Hong-Hai Zhang, 01 Jun 2023
    • AC2: 'Reply on CC1', Guanlin Li, 25 Oct 2023
  • RC1: 'Comment on egusphere-2023-771', Anonymous Referee #1, 07 Jun 2023
    • AC1: 'Reply on RC1', Guanlin Li, 25 Oct 2023
  • RC2: 'Comment on egusphere-2023-771', Anonymous Referee #2, 06 Oct 2023
    • AC3: 'Reply on RC2', Guanlin Li, 25 Oct 2023

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • CC1: 'Comment on egusphere-2023-771', Hong-Hai Zhang, 01 Jun 2023
    • AC2: 'Reply on CC1', Guanlin Li, 25 Oct 2023
  • RC1: 'Comment on egusphere-2023-771', Anonymous Referee #1, 07 Jun 2023
    • AC1: 'Reply on RC1', Guanlin Li, 25 Oct 2023
  • RC2: 'Comment on egusphere-2023-771', Anonymous Referee #2, 06 Oct 2023
    • AC3: 'Reply on RC2', Guanlin Li, 25 Oct 2023
Guanlin Li, Damian L. Arévalo-Martínez, Riel Carlo O. Ingeniero, and Hermann W. Bange
Guanlin Li, Damian L. Arévalo-Martínez, Riel Carlo O. Ingeniero, and Hermann W. Bange

Viewed

Total article views: 535 (including HTML, PDF, and XML)
HTML PDF XML Total Supplement BibTeX EndNote
351 144 40 535 34 16 18
  • HTML: 351
  • PDF: 144
  • XML: 40
  • Total: 535
  • Supplement: 34
  • BibTeX: 16
  • EndNote: 18
Views and downloads (calculated since 16 May 2023)
Cumulative views and downloads (calculated since 16 May 2023)

Viewed (geographical distribution)

Total article views: 572 (including HTML, PDF, and XML) Thereof 572 with geography defined and 0 with unknown origin.
Country # Views %
  • 1
1
 
 
 
 
Latest update: 21 May 2024
Download
Short summary
Dissolved carbon monoxide (CO) surface concentrations were first measured at 14 stations in the Ria Formosa Lagoon system in May 2021. Ria Formosa was a source of atmospheric CO. Microbial consumption accounted for 83 % of the CO production. The results of a 48-hour irradiation experiment with aquaculture effluent water indicated that aquaculture facilities in the Ria Formosa Lagoon seem to be a negligible source of atmospheric CO.