Transcript MEDAR/MEDATLAS 2002 and future initiatives

CESUM International Conference,Varna, 12-18 Octobre
2003
PROVIDING DATA SERVICES
FOR THE MEDITERRANEAN AND
BLACK SEAS
EC-MAST Concerted Action
(MAS3-CT98-0174/ERBIC20-CT98-0103)
C. MAILLARD, E. BALOPOULOS, N. MIKHAILOV, M. FICHAUT,
G. MAUDIRE, M-J. GARCIA, B. MANCA, A. SUVOROV,
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A. GIORGETTI, A. IONA, M. RIXEN and MEDAR Group
MEDAR GROUP
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Rationale and Background
Long time series of marine observations are required for many scientific
and technical studies, especially to follow up changes in the sea waters, to
manage living and non-living marine resources and to make predictions.
Therefore, the Global Ocean Observing System (GOOS) has reviewed key
parameters that should be provided with known precision.
Such data are collected by scientific teams of many countries, but in most
cases they remain dispersed in heterogeneous formats and systems. Their
access is difficult, and due the lack of appropriate archiving, they are
frequently in danger to be lost.
The IOC “Global Ocean Data Archaeology and Rescue (GODAR)”
programme has been launched to rescue and disseminate the dispersed
data. Two pilot projects MODB and MEDATLAS (1994-1997) initiated the
Mediterranean and Black Sea regional module of GODAR. As a result, an
important database of vertical temperature and salinity profiles was
released for public use.
A following EU concerted action MEDAR/MEDATLAS-II (MAS3-CT980174 & ERBIC20-CT98-0103), was launched in 1998 with the overall
objective to make available a comprehensive data product of multidisciplinary in-situ data and information in the Mediterranean and 3
Black
Sea, through a wide co-operation of the bordering countries.
MEDAR OBJECTIVES
1. To compile and safeguard historical data of core basic
parameters:
1. influencing the biodiversity and the primary production and
necessary for the modellisation of the region;
2. for which sufficient preliminary knowledge of the distributions
were available to allow quality checks to be performed.
2. To develop an integrated database by:
 using a common exchange format;
 implementing a common protocol for quality checking.
3. To compute gridded climatological statistics for all the
parameters.
4. To publish and disseminate the resulting observed and
analysed data and the meta-data.
5. To build capacity and enhance communication between
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scientists and data managers.
Tasks Organization
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DATA BASE CONTENT
(PARAMETERS)
Parameter
Nb of Profiles
Parameter
Nb of Profiles
Temperature
284 371
Nitrite
10 508
Salinity
118 009
Ammonium
5 239
Oxygen
44 928
Chlorophyll
4 672
Phosphate
20 761
Alkalinity
2 548
Silicate
15 920
Total Phosphorus
2 381
PH
Nitrate
14 512
10 572
H2S
Total Nitrogen
1 843
153
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DATA BASE CONTENT
(DATA TYPE)
Data type
Nb of Profiles in MEDATLAS 2002
(MEDATLAS 1997)
MBT, XBT Thermistor
chains
CTD
161 877
(156 503)
35 679
(15 778)
Bottle Casts
88 323
(33 977)
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TEMPERATURE
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SALINITY
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DISSOLVED OXYGEN
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PHOSPHATE
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CHLOROPHYLL
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QUALITY CHECKS
QCO : Automatic check of the format
QC1 : Automatic and visual check of the headers
QC2 : Automatic and visual check
of the data points
 a quality flag
to each numerical value
(GTSPP flag scale)
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DATA QUALITY
GOOD
OUT OF STATISTICS
DOUBTFUL
FALSE
NO QC
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CLIMATOLOGY
Methodology
 Computation of Climatological Analysis by Variational
Inverse Model (VIM) algorithms
 Computation made on finite elements and then reinterpolated on a regular grid (0.2 degrees in
Latitude and Longitude), with smaller scales for local
computations
 T, S and bio-chemical climatology reviewed by
regional experts and modellers
http://modb.oce.ulg.ac.be/Medar
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CLIMATOLOGY - Results
Selected numerical fields depending on data availability:
Annual , seasonal and monthly climatology
Temperature, Salinity
Annual and seasonal
Oxygen, Silicate, Phosphate
Hydrogen sulphide (H2S) in the Black Sea
Annual only
Nitrate, Nitrite, pH, Ammonium, Alkalinity, Chlorophyll
No climatology
Total Phosphorus, Total Nitrogen
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CLIMATOLOGY – Results
2500 horizontal maps, vertical sections and stations location
SOME EXAMPLES
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SALINITY at 10m Depth
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VERTICAL SECTIONS
and surface zoom
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DATA PRODUCT
(A set of 4 CD-ROMs)
CD-ROM 1: Documentation
on the project and its results
Cruise inventory
Software
QCmedar
ODV
CD-ROM 2: Database
Observed data
+ SELMED interface
for extraction (according to various criteria), interpolation and visualization - export formats:
MEDATLAS, CSV or ODV.
CD-ROM 3: Climatology
Global + W-Mediterranean
CD-ROM 4: climatology
Black Sea + E-Mediterranean
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Conclusion 1: Present Services
MEDAR network disseminate MEDATLAS 2002,
presently the best available integrated data base
for the Mediterranean & BLack Seas. It provides
also further data services:
Extraction and distribution of regional or thematics
subsets, to answer specific requests,
Implementation of the common protocols and
practices for data formatting and checking for
quality,
Additional services at the national levels: continuous
compilation, quality checking with feedback to
source
scientists,
perennial
archiving
and
dissemination of new data.
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Visit our distributed web site: www.ifremer.fr/medar
Conclusion 2: Further needs to meet
Direct internet access to the more complete available data
sets : historical data + data released in recent projects
including real time data - Use of up-to-date communication
technology for data dissemination
Increase in quantity and quality the data and products
availability such as estimates of the mean, decadal,
seasonal, monthly statistics at basin, regional and shelf
scales – requires a large quantity of data of good quality
Improve and document the QC standards and protocols,
especially for bio-chemicals and products
Increase efficiency through enhanced international
cooperation & capacity building activities - requires more
portable software, meetings and training courses
Increase of the public awareness on the data heritage
 New concerted actions in preparation:
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MEDBLACK-ODN, SEA-DATANET
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