 |
| Titel |
Synoptic-scale analysis of mechanisms driving surface chlorophyll dynamics in the North Atlantic |
| VerfasserIn |
A. S. A. Ferreira, H. Hátún, F. Counillon, M. R. Payne, A. W. Visser |
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| ISSN |
1726-4170
|
| Digitales Dokument |
URL |
| Erschienen |
In: Biogeosciences ; 12, no. 11 ; Nr. 12, no. 11 (2015-06-11), S.3641-3653 |
| Datensatznummer |
250117984
|
| Publikation (Nr.) |
 copernicus.org/bg-12-3641-2015.pdf |
|
|
|
|
|
| Zusammenfassung |
| Several hypotheses have been proposed for the onset of the spring
phytoplankton bloom in the North Atlantic. Our main objective is to examine
which bottom-up processes can best predict the annual increase in surface
phytoplankton concentration in the North Atlantic by applying novel phenology
algorithms to ocean colour data. We construct indicator fields and time
series which, in various combinations, provide models consistent with the
principle dynamics previously proposed. Using a multimodel inference
approach, we investigate the evidence supporting these models and how it
varies in space. We show that, in terms of bottom-up processes alone, there
is a dominant physical mechanism, namely mixed-layer shoaling, that best
predicts the interannual variation in the initial increase in surface
chlorophyll across large sectors of the North Atlantic. We further show that
different regions are governed by different physical phenomena and that
wind-driven mixing is a common component, with either heat flux or light as
triggers. We believe these findings to be relevant to the ongoing discussion
on North Atlantic bloom onset. |
| |
|
| Teil von |
|
|
|
|
|
|
|
|