Turbulence in a small boreal lake: Consequences for air-water gas exchange.

ABSTRACT: The hydrodynamics within small boreal lakes have rarely been studied, yet knowing whether turbulence at the air-water interface and in the water column scales with metrics developed elsewhere is essential for computing metabolism and fluxes of climate-forcing trace gases. We instrumented a humic, 4.7 ha, boreal lake with two meteorological stations, three thermistor arrays, an infrared (IR) camera to quantify surface divergence, obtained turbulence as dissipation rate of turbulent kinetic energy (ε) using an acoustic Doppler velocimeter and a temperature-gradient microstructure profiler, and conducted chamber measurements for short periods to obtain fluxes and gas transfer velocities (k). Near-surface ε varied from 10^-8 to 10^-6 m² s

SUBMITTER: MacIntyre S 

PROVIDER: S-EPMC8048862 | biostudies-literature | 2021 Mar

REPOSITORIES: biostudies-literature