Climate change is one of the main challenges society is facing today. One of the most important greenhouse gases is methane, which is 28 times more potent than carbon dioxide. In order to mitigate sources of methane, those sources have to be properly quantified. This project focuses on the estimation of emission fluxes using innovative modeling techniques such as direct numerical simulations and models based on Reynolds-averaged Navier-Stokes equations. Estimation of sources will be used for planning, and preparing measurement strategies, as well as for interpreting collected data.