CLIOSAT : SATELLITE METOCEAN ATLAS - A REVOLUTIONARY WORLDWIDE ATLAS FOR ALL MARINE ACTIVITIES
CLIOSAT : SATELLITE METOCEAN ATLAS - A REVOLUTIONARY WORLDWIDE ATLAS FOR ALL MARINE ACTIVITIES
Primary Keywords: Atlas, Extreme conditions, Waves, Wind, Statistics,
CLIOSat
Secondary Keywords: Marine operation, transport, Structure design
Marine operators, like ELF, have a growing need for pre-project
meteorological and marine parameters and they want an easy access to world-wide
reliable metocean conditions, at low cost. For instance, they require to be
quickly provided with parameters of winds (speed and direction), waves
(heights, periods, directions) to help decision taking as to assess costs and
feasibility of their industrial projects.
This led MétéoMer to achieve CLIOSat : the first global atlas, only based on
satellite data, answering to such operational needs.
Customers will then benefits from an atlas far superior in quality to the other
previous existing atlases made out of ship observations, offering the
equivalent of a several year duration measurement campaign..
For these pre-project needs, marine operators were often faced with the
limitations of classical available atlases, based upon ships observation:
inaccuracy of these visual data sources, especially in storm conditions, coarse
spatial and temporal statistics,....
Fortunately, satellites recently brought dramatic new information about the
marine environment : they offer all-weather reliable winds and sea-state
measurements, with a global and dense coverage.
The construction of CLIOSat first relies on a reliable global database with the following steps :
The CLIOSat information can be offered to end-users, like for ELF, in two modes :
The quality of the climate data issued from satellites depends not only on
the accuracy of the raw data, but also on the coherency of the whole dataset.
To ensure this, metocean experts delimit climate coherent areas according o
their knowledge of typical and extreme meteorological conditions.
This figure shows the 169 areas which has been made in order to offer general
climate information.
For more specifics requests, on local sites, shorter climate coherent areas can
be defined by experts, through an on-line service.
The CLIOSat project is based upon the
processing of all existing altimeters, scatterometer and SAR data and their
storage into an archiving and interrogation system.
This figure shows an example of significant wave height histogram for the
Carolina zone.
Quite badly known phenomena can be evidenced and quantified.
This scatter diagram of periods and directions of spectral peaks for the
Caribbean sea area shows very long swells (periods above 18s) coming from NNE,
in the winter.
These swells, which are generated off North-Eastern Unated States coast by
lows, were not expected to easily cross the natural barrier of the Caribbean
Islands.
For each areas, CLIOSat supply, histograms, diagrams of occurences for every concerned parameters and tables given extreme Hs values over several return periods.
For the estimation of pre-project metocean parameters for a given location,
the common practise is to construct the sea-state distributions from ship
observations or use available atlases
For the former, we may mention the uncertaincies related to visual observations
of sea conditions and the poor statistical sampling due to the avoidance of
stormy areas by the shipmasters. For the latter, we have to deal with coarse
grids and temporal unhomogeneity.
Elf benefits from an atlas, far superior in quality to the other previous
existing atlases made out of ship observations. This tool is suitable for
pre-projects needs, specially on a remote poorly documented area.
The CLIOSat on line service offered to Elf the
equivalent of a several year duration measurement campaign.
The cost for this atlas on Pc is 6.5 kecu. This price matches atlases from
ship observations.
For products on the on-line service, prices are 25 Ecu per histogram and 50 Ecu
per diagram of occurrences.
For the first time, reliable climate statistics of measured metocean parameters
are available at low costs on a global scale, either on a PC atlas or for local
areas through on on line service.
MétéoMer markets CLIOSat, all over
the world, for oil companies, maritime workers (dredging, towing, drilling,
survey companies, offshore operators) , ship designers and harbour
engineerings. Many uses of the CLIOSat on-line
service have already been made to quickly assess metocean parameters on various
areas such as New Zealand, North Sea, Persian Gulf, Morocco coasts,Falklands,
Western Africa, ...
| Customer |
| Name: Mme Lebas |
| Company: ELF |
| Address: 26 Av. des Lilas - 64018 Pau - France |
| Name: Mr Lasnier |
| Company: MeteoMer |
| Address: Quartier les Barestes - RN7 - 83480 Puget sur Argens - France |
| Tel: +33 (0)4 94 45 66 11 |
| Fax: +33 (0)4 94 45 68 23 |
| E-mail: 4meteomer@meteomer.fr |
| Web: www.meteomer.fr www.meteomer.com |
| Name: Mr Lasnier |
| Company: MeteoMer |
| Address: Quartier les Barestes - RN7 - 83480 Puget sur Argens - France |
| Tel: +33 (0)4 94 45 66 11 |
| Fax: +33 (0)4 94 45 68 23 |
| E-mail: 4meteomer@meteomer.fr |
| Web: www.meteomer.fr www.meteomer.com |