coriolis data center

1
Potential collaboration between the Coriolis
project and the Samos initiativeL. Petit de
la Villéon. Ifremer-France-petit_at_ifremer.fr

http//www.coriolis.eu.org
codac_at_ifremer.fr
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Plan

• Description of the Coriolis project and its 5
  components
• Focus on the Data Centre component (The Coriolis
  data centre)
• Various sources of data
• Focus on the research vessels components
• Routine measurements
• Potential collaboration between the SAMOS
  initiative and the Coriolis project
• Could the Coriolis project being a partner of the
  SMOS / Aquarius cal-val process ?

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Coriolis as a part of a global structure for
operational oceanography a french approach in an
international context
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Products
Validation
Delayed mode
Near real time
Assimilation
Model outputs
Coriolis aims to be a one-stop shopping for
ocean in-situ data - near real-time
(assimilation) - delayed-mode (validation)
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Products
Validation
Delayed mode
Near real time
Assimilation
Validation Database
Model outputs
There is a strong need of in situ data for
cal-val purposes.
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How did Coriolis start to work on operational
oceanography?

http//www.coriolis.eu.org
codac_at_ifremer.fr
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Coriolis data flow

Argo Dacs Argo coriolis, gyroscope, Mersea,33
projectsProvor, Apex, Nemo
12h
GTS (Météo-France)
daily2
dynamic
web
Quality Controls
Research vessels xbt-ctd, tsg Atalante, thalassa,
suroît, Beautemps-Beaupré, Marion-Dufresne,
Meteor,
12h
daily
ftp, opendap, las
daily
Coriolis-Database
argo
Météo-france Gts data Lagrangian buoys
weekly
Mersea, Mercator Godae
12h
1 year
Productsanalyses, graphics, mapscurrent
estimates sensor drifts
Gtspp- Gosud Meds GTS
daily
48h
Other modelssoap (Shom- French Navy)
VOS- merchant ships ORE SSS (IRD)T S surface
data
annual
Clivardelayed mode data sets
annual
Moorings Tao, Triton, Pirata
Gtspp- Gosud
US-nodc historical data
1 year
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Data sources


Research vessels
Argo floats


Merchant ships

Sea mamals or sea elephants

Gliders

Moorings
Drifting buoys
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Vertical profiles from 26th April to 3rd May
2006. This is today !!!
About 5-7000 new profiles every week
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Coriolis project routine measurements on board
the research vessels

• - Consider the data collected on board the
  research vessels as a full part of a global and
  continuous component of the ocean observing
  system.Ships considered are mainly french
  vessels. Effort is made at an European level
• - Define and set up the data collection
  transmission protocols, evaluate the sensors
  drifts in relation with the science group, make
  the link between ship operators and data centre

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Research vessels component

• Data considered
• T and S vertical profile data from XBT and CTD
• surface T S Data
• Current data from VM-ADCP
• In the frame of
• national projects
• european funded projects
• In relationship with international projects
• GOSUD (IODE)

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Example T S surface data collected on board
research vessels (thermosalinographs)
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Example XBT, CTD and ADCP data collected on
board french and european research vessels
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Directions for potential collaboration (1/5)

• Access to new sources of data (1/2)
• SAMOS collect data from US Research Vessels
• Both meteorological and oceanographic data (SST)
• Main interest on meteorological data
• CORIOLIS collect data from french research
  vessels (objective is to enlarge to european
  vessels)
• oceanographic data (SS-SSS) and meteorological
  data
• Main interest on oceanographic data
• gt data exchange between the 2 projects
• gt an pilot experience could be started on a
  SAMOS research vessel and on Atalante
• gt Coriolis s Interest is on getting new data,
  receiving feedback on meteorological data quality
• gt Gosud interest is obvioulsly to have access to
  new data

Meteorological are available for about half of
these locations
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Directions for potential collaboration (2/5)
Parameters recorded on Coriolis research vessels

• Meteorological data
• Wet bulb temperature
• Sea Surface temperature
• Humidity
• Atmospheric pressure
• Dew Point
• Precipitation rate
• Solar Radiation
• True wind Speed and direction
• Apparent Wind Speed and direction
• Coriolis has no experience on QC such data and it
  is not our 1st objective to process them but they
  are available.
• Some of these parameters are transmitted on the
  GTS

• Oceanographic data
• Sea Surface temperature
• Conductivity
• Water tank temperature

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Directions for potential collaboration (3/5)

• Access to new sources of data (2/2)
• Coriolis is involved in the OceanSites project as
  a GDAC
• OceanSites relates to Open Ocean moorings and
  long time series and monitoring
• They are regular ship cruises planned for
  moorings maintenance
• Access to data collected by the vessels when they
  cruise to the moorings could also be an
  interesting way to investigate for potential
  collaboration
• Cruises data are full part of the OceanSites
  Project
• http//www.oceansites.org/

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Directions for potential collaboration (4/5)

• Share the data and distribute them (1/2)
• As the objectives of the 2 projects are quite
  different, it seems reasonable that
• Meteorological data go to SAMOS
• Surface ocean data go to GOSUD
• The issue to ensure that meteorological data and
  ocean data that are transmitted together, then
  splitted can be reconnected unequivocally
• Proposals
• We have to define a common agreed unique tag
  based on the data (as it is already done within
  GTSPP) or based on the files transmitted (could
  assign a ship day tag WMO/date)
• Data could be shared between the 2 projects
  through 2 DODS Servers
• GOSUD data available on a DODS server as well as
  all the data hosted by Coriolis
• http//www.ifremer.fr/cgi-bin/nph-dods/data/in-sit
  u
• In this scheme the GOSUD and SAMOS sites are not
  mirror sites. Is there a need for a final
  archiving centre or at least a common access to
  the data. To be also defined

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Directions for potential collaboration (5/5)

• Share the data and distribute them (2/2)
• Coriolis has an experience on ocean data routine
  insertion on the GTS (Global Transmission
  NetWork).
• If we plan to receive the ocean data from SAMOS,
  Coriolis propose to do that for SAMOS data (if
  not yet done)

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Summarizing

• Share the data between our 2 projects seems to be
  the 1st obvious step Meteorological data
   against  Ocean data
• Find an easy way to access collocated meteo and
  ocean data
• Define a data structure for that
• Which may include a common format or at least a
  compatible format
• As a conclusion for a SAMOS / CORIOLIS
  collaboration
• Routinely collecting data on research vessels is
  very valuable because
• Ships tracks are far from merchant routes
• Data are of high quality (because of being
  acquired by specialised staff)
• Sharing those data is important and using them as
  much as it is possible is also important.
  Feedback to the data originators must be done
  each time it is possible
• Another message Coriolis is open to a
  collaboration for a centralised in situ ocean
  data access for satellite validation purposes

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• Contacts
• http//www.coriolis.eu.org
• Codac_at_ifremer.fr
• Petit_at_ifremer.fr