Examining CO2 concentrations and flow dynamics in streams
Monday, April 15, 2013 - 09:21
in Earth & Climate
As part of the carbon cycle, carbon dioxide (CO2) is flushed from soils into stream water; this CO2 either escapes directly into the atmosphere from the water surface or gets transported downstream of the study site. To understand the amount and variability of both the carbon flushed from soils and the subsequent loss to the atmosphere, scientists first need to understand the variability in aquatic concentrations. Although previous studies have shown that CO2 concentrations vary considerably over time and are often linked to water discharge, measurements have primarily been based on low-frequency manual sampling rather than continuous monitoring, so much of the temporal pattern is lost.