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| Titel |
Improved near real-time data management procedures for the Mediterranean ocean Forecasting System-Voluntary Observing Ship program |
| VerfasserIn |
G. M. R. Manzella, E. Scoccimarro, N. Pinardi, M. Tonani |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
0992-7689
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| Digitales Dokument |
URL |
| Erschienen |
In: Annales Geophysicae ; 21, no. 1 ; Nr. 21, no. 1, S.49-62 |
| Datensatznummer |
250014543
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| Publikation (Nr.) |
 copernicus.org/angeo-21-49-2003.pdf |
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| Zusammenfassung |
A "ship of
opportunity" program was launched as part of the Mediterranean Forecasting
System Pilot Project. During the operational period (September 1999 to May
2000), six tracks covered the Mediterranean from the northern to southern
boundaries approximately every 15 days, while a long eastwest track from Haifa
to Gibraltar was covered approximately every month. XBT data were collected,
sub-sampled at 15 inflection points and transmitted through a satellite
communication system to a regional data centre. It was found that this data
transmission system has limitations in terms of quality of the temperature
profiles and quantity of data successfully transmitted. At the end of the MFSPP
operational period, a new strategy for data transmission and management was
developed. First of all, VOS-XBT data are transmitted with full resolution.
Secondly, a new data management system, called Near Real Time Quality Control
for XBT (NRT.QC.XBT), was defined to produce a parallel stream of high quality
XBT data for further scientific analysis. The procedure includes: (1) Position
control; (2) Elimination of spikes; (3) Re-sampling at a 1 metre vertical
interval; (4) Filtering; (5) General malfunctioning check; (6) Comparison with
climatology (and distance from this in terms of standard deviations); (7)
Visual check; and (8) Data consistency check. The first six steps of the new
procedure are completely automated; they are also performed using a new
climatology developed as part of the project. The visual checks are finally
done with a free-market software that allows NRT final data assessment.
Key words. Oceanography: physical
(instruments and techniques; general circulation; hydrography) |
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