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


MFS- VOS in the Mediterranean

Participants

Activity in 2005

Perspectives

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MFS-VOS in the Mediterranean


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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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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From 1999 to 2006

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From 1999 to 2005

MFS-PP ADRICOSM MFS-TEP

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MFS-VOS in the Mediterranean in 2005


Genova-Palermo

Ploce-Malta

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SOOP+COOP DB (>1000), T4(>100), T7(>100), T5(<20)

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0

50

100

150

200

250

300

350

400

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


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GPS

XBT launcher connection

MK12/21 card

MFSTEP version

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From ARGOS to Globalstar


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


Genova-Palermo

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Data QC Procedures


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)


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Web page (LAS)

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Lybia

Comparison between XBT and ARGO I


Red= ARGO, Blue=XBT

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Comparison between XBT and ARGO II


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


*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).


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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)


NEW HEADER for all the q.c. profiles on ENEA WEB page

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Perspectives for 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.


Depth error Accuracy on temperature values

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Thank You!


1 italian activity in soop-vos pmo-3-int hamburg 23-24 march, 2006 franco reseghetti giuseppe m.r....

Documents

mfs vos

mediterranean pmo

int hamburg

soopvos pmo

mfspp adricosm mfstep

framework of mfs soop

presentation pmo

mersea slide