456
LAURENCE CROSNIER
x ‘Consistency’ means that operational systems outputs have to be
consistent with the current knowledge of the ocean circulation and
climatologies.
x ‘Quality’ means that operational systems outputs have to be in
agreement with independent observations (i.e. not assimilated).
x ‘Performance’ means that internal metrics should quantify the
capacity of each system to provide accurate short term forecast.
Following those criteria, internal metrics are sorted into different classes.
Class 1, 2, and 3 metrics allow testing the consistency and quality of the
systems. Class 4 are diagnostics to check the performance of the system.
Definitions for the North Atlantic and Mediterranean basins are given in this
paper. Some complementary metrics (Class 1 to 4) are currently being
defined in the context of GODAE for the Pacific Ocean (Masa Kamachi,
personal communication), the Arctic and Antarctic Oceans with metrics for
the ice (Gilles Garric, personal communication) and the Indian and Southern
Oceans (Neville Smith, personal communication).
Standardized output fields and diagnostics are distributed via OPeNDAP
servers and can be visualized through a Live Access Server (LAS) or with
DODS clients.
2.
OPeNDAP and LAS servers
2.1.
OPeNDAP server
OPeNDAP allows to access remote data of interest over the internet,
using familiar data analysis and visualization packages like: Matlab, Ferret
and others, without worrying about data storage formats. More information
about OPeNDAP/DODS can be found on the web:
x http://opendap.org/faq/what_is_OPeNDAP_software.html
x http://ferret.pmel.noaa.gov/Ferret/DODS/ferret_dods.html
A non exhaustive list of all datasets available via OPeNDAP servers is
indicated on the OPeNDAP homepage: http://www.opendap.org/data/
2.2. LAS server
The Live Access Server (LAS) is a highly configurable Web server
designed to provide flexible access to geo-referenced scientific data. LAS
enables the Web user to visualize data with on-the-fly graphics, request
subsets of variables in a choice of file formats. A user can quickly obtain
products such as plots, images, and formatted files with any t, z, y, x
combination. LAS has a comparison mode which allows the user to select
any data sets distributed on Internet via OPeNDAP, and then compute
LAURENCE CROSNIER
x ‘Consistency’ means that operational systems outputs have to be
consistent with the current knowledge of the ocean circulation and
climatologies.
x ‘Quality’ means that operational systems outputs have to be in
agreement with independent observations (i.e. not assimilated).
x ‘Performance’ means that internal metrics should quantify the
capacity of each system to provide accurate short term forecast.
Following those criteria, internal metrics are sorted into different classes.
Class 1, 2, and 3 metrics allow testing the consistency and quality of the
systems. Class 4 are diagnostics to check the performance of the system.
Definitions for the North Atlantic and Mediterranean basins are given in this
paper. Some complementary metrics (Class 1 to 4) are currently being
defined in the context of GODAE for the Pacific Ocean (Masa Kamachi,
personal communication), the Arctic and Antarctic Oceans with metrics for
the ice (Gilles Garric, personal communication) and the Indian and Southern
Oceans (Neville Smith, personal communication).
Standardized output fields and diagnostics are distributed via OPeNDAP
servers and can be visualized through a Live Access Server (LAS) or with
DODS clients.
2.
OPeNDAP and LAS servers
2.1.
OPeNDAP server
OPeNDAP allows to access remote data of interest over the internet,
using familiar data analysis and visualization packages like: Matlab, Ferret
and others, without worrying about data storage formats. More information
about OPeNDAP/DODS can be found on the web:
x http://opendap.org/faq/what_is_OPeNDAP_software.html
x http://ferret.pmel.noaa.gov/Ferret/DODS/ferret_dods.html
A non exhaustive list of all datasets available via OPeNDAP servers is
indicated on the OPeNDAP homepage: http://www.opendap.org/data/
2.2. LAS server
The Live Access Server (LAS) is a highly configurable Web server
designed to provide flexible access to geo-referenced scientific data. LAS
enables the Web user to visualize data with on-the-fly graphics, request
subsets of variables in a choice of file formats. A user can quickly obtain
products such as plots, images, and formatted files with any t, z, y, x
combination. LAS has a comparison mode which allows the user to select
any data sets distributed on Internet via OPeNDAP, and then compute