Physico-chemical parameters measured at a high spatial resolution in the Miellajokka catchment, Sweden
High spatial resolution dataset of CO2 evasion in a stream network in northern Sweden (52.5 km2; Miellajokka catchment). We measured key hydrological parameters to estimate k600, directly determined the pCO2, and estimated stream CO2 evasion across 168 sites in the stream network. Comparison of pCO2 values from a global compilation of river chemistry (GLORICH; Hartmann et al., 2014) with calculated site-specific k600 and CO2 evasion.
Rocher-Ros, G., Sponseller, R. A., Lidberg, W., Mörth, C.-M., & Giesler, R. (n.d.). Landscape process domains drive patterns of CO2 evasion from river networks. In Limnology and Oceanography Letters (Vol. 4, Issue 4, pp. 87–95). https://doi.org/10.1002/lol2.10108
Department of Ecology and Environmental Sciences
Earth and Related Environmental Sciences
Oceanography, Hydrology and Water Resources
Processes and phenomena of the atmosphere.
Environmental resources, protection and conservation.
Science dealing with the properties, distribution, and circulation of water on and below the earth's surface, and atmosphere.
The carbon dioxide dissolved in water has even more effect than the oxygen. Oxygen remains as an O2 molecule, whether it's in its gas phase or in solution, but when CO2 is dissolved in water, a small proportion of it reacts chemically with H2O to form carbonic acid, H2CO3. (There's no mystery about that: just add up the six atoms.) In water carbonic acid dissociates rapidly to form a H+ ion and HCO2 (bicarbonate), so it affects the carbonate equilibrium, and pH values change as a result. Dissolved CO2 lowers the average pH of rainwater to 5.7, even where 'acid rain' caused by pollution isn't a factor. The gentle acidity of rainwater is a major source for the weathering of minerals, which the carbonic acid leaches from rocks and which eventually find their way to the ocean.