 |
| Titel |
High-resolution Climatology of the North-East Atlantic using Data-Interpolating Variational Analysis |
| VerfasserIn |
C. Troupin, F. Machín, D. Sirjacobs, M. Ouberdous, J.-M. Beckers |
| Konferenz |
EGU General Assembly 2009
|
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 11 (2009) |
| Datensatznummer |
250020746
|
|
|
|
|
|
| Zusammenfassung |
| Numerous climatologies are available at different resolution and cover various part of the
global ocean. Most of them have a resolution too low to represent suitably regional processes
and are not able to not take into account the influence of physical effects (coast, boundaries,
advection etc).
We developed a high-resolution atlas for temperature and salinity in the North-East part
of the Atlantic Ocean on thirty-three depth levels. The originality of this climatology is
twofold: (a) the data set: data were collected on all major databases and aggregated to lead to
a dense data collection. (b) the method: climatological fields were constructed using Diva
technique. The formulation allows the consideration of coastlines and bottom topography,
and has a numerical cost independent on the number of observations. Moreover, only a few
parameters are necessary in order to carry out an analysis. The method offers tools to
determinate these parameters, making it as objective as possible and applicable to other
regions.
Results show overall good agreement with World Ocean Atlas, but also reveal significant
improvements in coastal areas. Error maps were generated according to different theories and
emphasize the importance of data coverage for the creation of such climatological
fields.
Diva own quality control allows the detection of suspect data not found by a priori quality
checks and thus increase the overall quality of the climatology by removing unrealistic
features. |
|
|
|
|
|
|