Modeling the Spatial Variability of the Wind Field and CO2 and CH4 Fluxes over a Heterogeneous Surface.

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Title: Modeling the Spatial Variability of the Wind Field and CO2 and CH4 Fluxes over a Heterogeneous Surface.
Authors: Gibadullin, R. R.1,2 (AUTHOR) ravil00121@mail.ru, Mukhartova, I. V.1,2,3 (AUTHOR), Kochkina, M. V.4 (AUTHOR), Satosina, E. M.1 (AUTHOR), Stepanenko, V. M.1,5 (AUTHOR), Kerimov, I. A.2,6 (AUTHOR), Gulev, S. K.4 (AUTHOR), Olchev, A. V.1,2,4 (AUTHOR)
Source: Russian Meteorology & Hydrology. Sep2024, Vol. 49 Issue 9, p828-833. 6p.
Subject Terms: *Greenhouse gases, *Wind speed, *Weather, *Three-dimensional modeling, *Ground vegetation cover
Abstract: The spatial variability of CO2 and CH4 fluxes at two experimental carbon supersites with non-uniform vegetation and complex topography located in the Krasnodar krai and the Chechen Republic is estimated based on the results of field measurements and model experiments. The results show a significant spatial heterogeneity of the wind speed, turbulent coefficient, and vertical CO2 and CH4 fluxes. It is influenced by complex topography and mosaic vegetation, as well as by an uneven distribution of CO2 and CH4 sources and sinks in vegetation and soil cover. It has been shown that on the summer days of 2022 in similar weather conditions, both experimental sites served as sinks of greenhouse gases: the Roshni-Chu forest area in the Chechen Republic absorbed 5.18 g CO2e/(m2 hour), while the Black Sea coastal area in the Krasnodar krai absorbed only 2.95 g CO2e/(m2 hour). [ABSTRACT FROM AUTHOR]
Database: Energy & Power Source
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Abstract:The spatial variability of CO2 and CH4 fluxes at two experimental carbon supersites with non-uniform vegetation and complex topography located in the Krasnodar krai and the Chechen Republic is estimated based on the results of field measurements and model experiments. The results show a significant spatial heterogeneity of the wind speed, turbulent coefficient, and vertical CO2 and CH4 fluxes. It is influenced by complex topography and mosaic vegetation, as well as by an uneven distribution of CO2 and CH4 sources and sinks in vegetation and soil cover. It has been shown that on the summer days of 2022 in similar weather conditions, both experimental sites served as sinks of greenhouse gases: the Roshni-Chu forest area in the Chechen Republic absorbed 5.18 g CO2e/(m2 hour), while the Black Sea coastal area in the Krasnodar krai absorbed only 2.95 g CO2e/(m2 hour). [ABSTRACT FROM AUTHOR]
ISSN:10683739
DOI:10.3103/S1068373924090085