Diel variability of methane emissions from lakes.

ABSTRACT: Lakes are considered the second largest natural source of atmospheric methane (CH₄). However, current estimates are still uncertain and do not account for diel variability of CH₄ emissions. In this study, we performed high-resolution measurements of CH₄ flux from several lakes, using an automated and sensor-based flux measurement approach (in total 4,580 measurements), and demonstrated a clear and consistent diel lake CH₄ flux pattern during stratification and mixing periods. The maximum of CH₄ flux were always noted between 10:00 and 16:00, whereas lower CH₄ fluxes typically occurred during the nighttime (00:00-04:00). Regardless of the lake, CH₄ emissions were on an average 2.4 higher during the day compared to

SUBMITTER: Sieczko AK 

PROVIDER: S-EPMC7474682 | biostudies-literature | 2020 Sep

REPOSITORIES: biostudies-literature