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| Titel |
Technical Note: Cost-efficient approaches to measure carbon dioxide (CO2) fluxes and concentrations in terrestrial and aquatic environments using mini loggers |
| VerfasserIn |
D. Bastviken, I. Sundgren, S. Natchimuthu, H. Reyier, M. Gålfalk |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1726-4170
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| Digitales Dokument |
URL |
| Erschienen |
In: Biogeosciences ; 12, no. 12 ; Nr. 12, no. 12 (2015-06-24), S.3849-3859 |
| Datensatznummer |
250117998
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| Publikation (Nr.) |
 copernicus.org/bg-12-3849-2015.pdf |
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| Zusammenfassung |
| Fluxes of CO2 are important for our understanding of the global carbon
cycle and greenhouse gas balances. Several significant CO2 fluxes in
nature may still be unknown as illustrated by recent findings of high
CO2 emissions from aquatic environments, previously not recognized in
global carbon balances. Therefore, it is important to develop convenient and
affordable ways to measure CO2 in many types of environments. At
present, direct measurements of CO2 fluxes from soil or water, or
CO2 concentrations in surface water, are typically labor intensive or
require costly equipment. We here present an approach with measurement units
based on small inexpensive CO2 loggers, originally made for indoor air
quality monitoring, that were tested and adapted for field use. Measurements
of soil–atmosphere and lake–atmosphere fluxes, as well as of spatiotemporal
dynamics of water CO2 concentrations (expressed as the equivalent
partial pressure, pCO2aq) in lakes and a stream network are provided as
examples. Results from all these examples indicate that this approach can
provide a cost- and labor-efficient alternative for direct measurements and
monitoring of CO2 flux and pCO2aq in terrestrial and aquatic
environments. |
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