Assessment of the spatial distribution of the direction of greenhouse gas fluxes at the Krasnoyarsk water reservoir in the warm season of 2017

摘要

From the results of three measurement cycles, it is shown that significant dynamics is observed in the spatial distributionof the amplitude and direction of carbon dioxide flux at the water reservoir of the Krasnoyarsk hydro power plant (HPP)in the summer-fall season. In June and August, the sink of carbon dioxide from the atmosphere to the water surface wasobserved all over the area of the water reservoir and at the territory downstream of the dam. In September, the entirewater reservoir was mostly a source of carbon dioxide. It was found that in the three measurement periods the value ofΔРСН_4 is positive, that is, in the summer-fall period the Krasnoyarsk water reservoir is a source of methane inflow intothe atmosphere. The widest differences are observed just near the dam of the Krasnoyarsk HPP (from minimal in June tomaximal in September).