E3S Web Conf.
Volume 163, 2020IV Vinogradov Conference “Hydrology: from Learning to Worldview” in Memory of Outstanding Russian Hydrologist Yury Vinogradov
|Number of page(s)||6|
|Section||Geoecological Research and Protection of Water Bodies: What are the Limits – Imperfection of Water Legislation or Ignorance of the Processes?|
|Published online||17 April 2020|
Reasons and patterns of spatio-temporal variability of methane emission from the Mozhaysk reservoir in summer period
Moscow State University, Faculty of Geography, Hydrology Department, Moscow, Russia
2 Institute of Atmosphere Physics Russian Academy of Science, Moscow, Russia
3 Institute of Water Problems Russian Academy of Science, Moscow, Russia
* Corresponding author: email@example.com
Anthropogenic reservoirs are not only sources of clean energy, flow regulators, recreational and food resources, but also sources of greenhouse gases such as methane. The studies presented in this work, done on a well-studied low-flowing valley reservoir mainly in the summer, when the greatest variability of methane fluxes was observe. Depending on synoptic conditions, the temporal variability of methane fluxes varies greatly. Methane fluxes increase during the summer period and huge methane emissions observed before the autumn mixing stage. Emissions can occur during the destruction of temperature stratification, as a result of stormy weather. With such emissions, methane fluxes into the atmosphere can reach about 20 mgC*m-2*d-1, which is higher than the emission during convection. Revealing the patterns of spatio-temporal distribution of methane fluxes will help to determine the contribution of water bodies (in particular reservoirs) to the total methane budget of the atmosphere more accurately.
© The Authors, published by EDP Sciences, 2020
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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