1 Italian Activity in SOOP-VOS PMO-3-INT Hamburg 23-24 March, 2006 Franco Reseghetti Giuseppe M.R....
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Transcript of 1 Italian Activity in SOOP-VOS PMO-3-INT Hamburg 23-24 March, 2006 Franco Reseghetti Giuseppe M.R....
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Italian Activity in SOOP-VOS
PMO-3-INT Hamburg 23-24 March, 2006
Franco Reseghetti Giuseppe M.R. Manzella
ENEA – La Spezia
(on behalf of GNOO – National Group in Operational Oceanography)
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Outline of the presentation
PMO-3-INT Hamburg 23-24 March, 2006
MFS- VOS in the Mediterranean
Participants
Activity in 2005
Perspectives
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MFS-VOS in the Mediterranean
PMO-3-INT Hamburg 23-24 March, 2006
SOOP is in the framework of MFS
SOOP in Mediterranean is coordinated by ENEA
Collaboration with CSIC-CEAB (Spain), CNRS-LOB-COM (France), CNR & OGS (Italy), IOF (Croatia), HCMR (Greece), IMS-METU (Turkey), OC-UCY (Cyprus), IOLR (Israel).
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MFS-VOS in the Mediterranean
PMO-3-INT Hamburg 23-24 March, 2006
Started in September 1999Sustained by: MFSPP (EC-DG Research) ADRICOSM (Italian Min. Environment)MFSTEP (EC-DG Research)
Activities in the framework of EuroGOOS and MedGOOSSupports the Mediterranean Forecasting SystemIncluded in the GMES Ocean component (Integrated Project: MERSEA)
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MFS-VOS in the Mediterranean
PMO-3-INT Hamburg 23-24 March, 2006
From 1999 to 2006
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MFS-VOS in the Mediterranean
PMO-3-INT Hamburg 23-24 March, 2006
From 1999 to 2005
MFS-PP ADRICOSM MFS-TEP
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MFS-VOS in the Mediterranean in 2005
PMO-3-INT Hamburg 23-24 March, 2006
Genova-Palermo
Ploce-Malta
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MFS-VOS in the Mediterranean in 2005
PMO-3-INT Hamburg 23-24 March, 2006
SOOP+COOP DB (>1000), T4(>100), T7(>100), T5(<20)
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MFS-VOS in the Mediterranean in 2005
PMO-3-INT Hamburg 23-24 March, 2006
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Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Serie1
Improved data acquisition and q.c. procedures
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XBT launch systemXBT launch system
PMO-3-INT Hamburg 23-24 March, 2006
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GPS
XBT launcher connection
MK12/21 card
MFSTEP version
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From ARGOS to Globalstar
PMO-3-INT Hamburg 23-24 March, 2006
Early, only some significant points extracted from the temperature profiles were transmitted by mean of ARGOS in real time.
In order to have the full resolution profiles, the data transmission system was changed: GSM & Internet systems. The data were transmitted in near-real time, e.g. with a delay of about 12 – 20 hours from data collection.
Now, full resolution profiles are transmitted by means of the Globalstar system.
Data are transmitted from ships to ENEA MFS-VOS Thematic Data Centre. Satellite allows a “TRUE” real time transmission. GSM transmission is (probably) less expensive, but it is possible only in near coastal areas. In case of long tracks a delay is expected.
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From ARGOS to Globalstar
PMO-3-INT Hamburg 23-24 March, 2006
Genova-Palermo
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Data QC Procedures
PMO-3-INT Hamburg 23-24 March, 2006
Original NRT.QC.XBT procedure (Manzella, Scoccimarro, Pinardi, Tonani - 2003):
Initial visual check
Position control, gross range check & spikes analysis
Interpolation at 1 m interval, then Gaussian smoothing
Comparison with climatology
Final visual check, providing an overall consistency
QC profiles are available on ENEA WEB page within ~ 1 h delay
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Web page (general)
PMO-3-INT Hamburg 23-24 March, 2006
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PMO-3-INT Hamburg 23-24 March, 2006
Web page (LAS)
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Lybia
Comparison between XBT and ARGO I
PMO-3-INT Hamburg 23-24 March, 2006
Red= ARGO, Blue=XBT
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Comparison between XBT and ARGO II
PMO-3-INT Hamburg 23-24 March, 2006
Red= ARGO, Blue=XBT
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Extended acquisition* (in blue nominal values) T4 (70.5 s) 460 m
– 21 kn ≤ V ≤ 27 kn(230 XBT): <> = 80.6 ± 1.1 s ~ 550 m DB (118.3 s) 760 m
– V ≤ 20 kn(1312 XBT): <> = 140.9 ± 1.8 s ~ 900 m T7 (118.3 s) 760 m
– V ≤ 15 kn(68 XBT): <> = 142.5 ± 2.2 s ~ 900 m T5 (290.6 s) 1830 m
– V ≤ 7 kn(8 XBT): <> = 351.0 ± 10.9 s ~ 2100 m
Data Acquisition Improvements
PMO-3-INT Hamburg 23-24 March, 2006
*Only probes with t tnom, 2004-2005 measurements.
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QC procedures Improvements I
Data are QC with a unique (improved) NRT procedure and released.
The Gaussian filter smoothes too much the raw T values, mainly where dT/dz is significant. Each profile is divided in 3 regions (from the surface down to the seasonal thermocline, thermocline region, bottom), with different Gaussian filter values. The time t0 at which dT/dz starts is selected: four consecutive t intervals where dT/dz < - 0.1 ºC (nominal XBT accuracy)
Temperature values from surface to 3 m depth and last three values,a t the bottom, are eliminated (instead 5 m).
PMO-3-INT Hamburg 23-24 March, 2006
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QC procedures Improvements II
• *IE4820050916054004 Data Type=H13 Ship Name=LA SUPERBA CallSign=ICGK • *DATE=16092005 TIME=0540 LAT=N41 24.97 LON=E 11 4.18 DEPTH=-999. QC=1119• *NB PARAMETRES=02 RECORD LINES=00766• *PRES SEA PRESSURE sea surface=0 (DECIBAR=1000 PASCALS) def.= -999.99• *TEMP SEA TEMPERATURE (CELSIUS DEGREE) def.= 99.999• *GLOBAL PROFILE QUALITY FLAG=1 GLOBAL PARAMETERS QC FLAGS=11• *DC HISTORY=XBTs; XBT TYPE= TD; ACQUISITION TIME (s)=120.5;• *• *DM HISTORY=QC IN NEAR REAL TIME - MFS SOFTWARE• *• *COMMENT:PROJECT=MFSTEP ; LAUNCH H(m)=11; SPEED(kn)=23-27; WIND
SPEED(kn)=10;• *• *SURFACE SAMPLES=• *• *PRES(DBAR) TEMP(°C)
PMO-3-INT Hamburg 23-24 March, 2006
NEW HEADER for all the q.c. profiles on ENEA WEB page
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Perspectives for 2006
PMO-3-INT Hamburg 23-24 March, 2006
Same procedures for data flow and QC.
Continuation of data collection in Italian Seas (ADRICOSM-EXT: Dubrovnik-Bari & Ploce-Malta) and Genova-Palermo, with the addition of meteo-stations.
Other ‘Cruises Of Opportunity’ in the Mediterranean (Italian R/V URANIA) and Cyprus – Egypt transect (in collaboration with UCY).
Technological improvements, such as multiple launcher and multi-parametric probe (XBT-F).
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Data processing improvement
The use the ACQUISITION TIME (fixed increments due to the 10 Hz sampling rate) as free parameter. Then, the order of operations at point 3) in qc procedure has to be inverted.
START-UP problem. Systematic difference at the seasonal thermocline depth. The XBT recording system needs time before it measures stable T values (within 0.1 ºC). The observed averaged delay is 0.3 ± 0.1 s. Each profile could be rescaled.
NEW FALL RATE COEFFICIENTS seem to be required in Mediterranean for XBTs. The addition of a fine-tuning (based on XBT calibration results) seems to be also possible.
The accuracy on T values seems to be dependent on depth and occurring thermal structures.
PMO-3-INT Hamburg 23-24 March, 2006
Depth error Accuracy on temperature values
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Thank You!
PMO-3-INT Hamburg 23-24 March, 2006