Seasonal and diurnal changes of pCO₂ in the lower Brahmaputra River, Bangladesh.

ABSTRACT: Monthly 24-h real-time high-resolution monitoring was conducted for 1 year to investigate the carbon dioxide (CO₂) dynamics in the lower Brahmaputra River. The partial pressure of CO₂ (pCO₂) was observed between 136 and 1213 µatm. The pCO₂ was almost 1.5 times higher during the wet season (May-October) than during the dry season (November-April). Diurnal variation in pCO₂ was pronounced during the dry season. In contrast, no clear diurnal pattern was observed during the wet season. The combined measurements of O₂-CO₂ in river water provide insights into net chemical and microbial activity. In January and March, there was a bidirectional exchange of CO₂, occurring from air to water (sink) and from water

SUBMITTER: Hassan MA 

PROVIDER: S-EPMC11582595 | biostudies-literature | 2024 Nov

REPOSITORIES: biostudies-literature