Numerical simulation of methane emission from subarctic lake in Komi Republic (Russia)статья

Дата последнего поиска статьи во внешних источниках: 2 декабря 2016 г.

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1. gi216_Guseva.pdf gi216_Guseva.pdf 417,5 КБ 21 июля 2016 [Гусева С.П.]

[1] Numerical simulation of methane emission from subarctic lake in komi republic (russia) / S. Guseva, V. Stepanenko, N. Shurpali et al. // GEOGRAPHY, ENVIRONMENT, SUSTAINABILITY. — 2016. — Vol. 2, no. 9. — P. 58–74. During last decades, a special attention has been paid to methane emission from lakes [Bastviken et al., 2004; Wik et al., 2016 and etc.] as one of the significant sources of this important greenhouse gas to the atmosphere. However, attempts to simulate methane production and efflux at the air-water interface are scarce [Stepanenko et al., 2011; Tan et al., 2015a; Tan et al., 2015b] and models proposed so far need further validation using observation datasets. In this study, we use the 1D+ numerical model LAKE [Stepanenko et al., 2011; Stepanenko et al., 2016]. The LAKE model was applied to a small subarctic lake in the Seida study site (Komi Republic, Russia) for identification of the key factors influencing the surface CH4flux and its concentration in the lake. We carried out a calibration of biogeochemical constants involving qualitative considerations of the character of biogeochemical and physical processes occurring in the lake and aiming at a satisfactory agreement with observations, performed by the University of Eastern Finland (UEF) [Lind et al., 2009; Marushchak et al., 2016]. Comparing our model calibration results to earlier studies suggest that the crucial parameter of the model -methane production rate constant (Pnew,0)—has similar values for lakes of different types in high latitudes. [ DOI ]

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