Dynamics of Dissolved Inorganic Carbon and CO2 Fluxes between the Water and the Atmosphere in the Main Channel of the Ob River
- Authors: Pipko I.I.1, Pugach S.P.1, Savichev O.G.2, Repina I.A.3, Shakhova N.E.2, Moiseeva Y.A.2, Barskov K.V.3, Sergienko V.I.4, Semiletov I.P.1,2
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Affiliations:
- Il’ichev Pacific Oceanological Institute, Far-East Branch, Russian Academy of Sciences
- Tomsk National Research Polytechnic University
- Obukhov Institute of Atmospheric Physics, Russian Academy of Sciences
- Presidium, Far-East Branch, Russian Academy of Sciences
- Issue: Vol 484, No 2 (2019)
- Pages: 52-57
- Section: Chemistry
- URL: https://journals.rcsi.science/0012-5008/article/view/154379
- DOI: https://doi.org/10.1134/S0012500819020101
- ID: 154379
Cite item
Abstract
The results of studying the dynamics of parameters of the carbonate system in the middle and lower reaches of the Ob River in July 2016 were analyzed. The distributions of the carbonate characteristics of the river waters were found to follow a steady latitudinal trend determined by the landscape-geochemical conditions of the drainage basin and by the permafrost distribution. The first field data on the magnitude and direction of the CO2 fluxes in the Ob River water–atmosphere system were presented. It was shown that the waters in the middle and lower reaches of the river are multiply supersaturated with CO2 with respect to its atmospheric content, and the daily average evasion reaches 625.9 mmol m–2 day–1 at an average value of 102.1 mmol m–2 day–1. It was determined that the waters of the Ob River in the studied reaches are a significant CO2 source to the atmosphere; according to conservative estimates, the total flux in July was 2 × 1011 g of carbon in the form of CO2.
About the authors
I. I. Pipko
Il’ichev Pacific Oceanological Institute, Far-East Branch, Russian Academy of Sciences
Author for correspondence.
Email: irina@poi.dvo.ru
Russian Federation, Vladivostok, 690041
S. P. Pugach
Il’ichev Pacific Oceanological Institute, Far-East Branch, Russian Academy of Sciences
Email: irina@poi.dvo.ru
Russian Federation, Vladivostok, 690041
O. G. Savichev
Tomsk National Research Polytechnic University
Email: irina@poi.dvo.ru
Russian Federation, Tomsk, 634050
I. A. Repina
Obukhov Institute of Atmospheric Physics, Russian Academy of Sciences
Email: irina@poi.dvo.ru
Russian Federation, Moscow, 119017
N. E. Shakhova
Tomsk National Research Polytechnic University
Email: irina@poi.dvo.ru
Russian Federation, Tomsk, 634050
Yu. A. Moiseeva
Tomsk National Research Polytechnic University
Email: irina@poi.dvo.ru
Russian Federation, Tomsk, 634050
K. V. Barskov
Obukhov Institute of Atmospheric Physics, Russian Academy of Sciences
Email: irina@poi.dvo.ru
Russian Federation, Moscow, 119017
V. I. Sergienko
Presidium, Far-East Branch, Russian Academy of Sciences
Email: irina@poi.dvo.ru
Russian Federation, Vladivostok, 690091
I. P. Semiletov
Il’ichev Pacific Oceanological Institute, Far-East Branch, Russian Academy of Sciences; Tomsk National Research Polytechnic University
Email: irina@poi.dvo.ru
Russian Federation, Vladivostok, 690041; Tomsk, 634050