 |
| Titel |
Seasonal response of air–water CO2 exchange along the land–ocean aquatic continuum of the northeast North American coast. |
| VerfasserIn |
G. G. Laruelle, R. Lauerwald, J. Rotschi, P. A. Raymond, J. Hartmann, P. Regnier |
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| ISSN |
1726-4170
|
| Digitales Dokument |
URL |
| Erschienen |
In: Biogeosciences ; 12, no. 5 ; Nr. 12, no. 5 (2015-03-05), S.1447-1458 |
| Datensatznummer |
250117847
|
| Publikation (Nr.) |
 copernicus.org/bg-12-1447-2015.pdf |
|
|
|
|
|
| Zusammenfassung |
| This regional study quantifies the CO2 exchange at the air–water
interface along the land–ocean aquatic continuum (LOAC) of the northeast
North American coast, from streams to the shelf break. Our analysis
explicitly accounts for spatial and seasonal variability in the CO2
fluxes. The yearly integrated budget reveals the gradual change in the
intensity of the CO2 exchange at the air–water interface, from a strong
source towards the atmosphere in streams and rivers (3.0 ±
0.5 TgC yr−1) and estuaries (0.8 ± 0.5 TgC yr−1) to a net
sink in continental shelf waters (−1.7 ± 0.3 TgC yr−1).
Significant differences in flux intensity and their seasonal response to
climate variations is observed between the North and South sections of the
study area, both in rivers and coastal waters. Ice cover, snowmelt, and
intensity of the carbon removal efficiency through the estuarine filter are
identified as important control factors of the observed spatiotemporal
variability in CO2 exchange along the LOAC. |
| |
|
| Teil von |
|
|
|
|
|
|
|
|