PERSPECTIVES FROM GODAE
11
require attention to the upper ocean physical parameterizations and the
vertical transports (upwelling). All require considerable computational
resources for global simulation and so rely on advanced software
developments to take advantage of state of the art computer technology.
Perspective #4:
Global high-resolution ocean model assimilation
systems are the main focus of GODAE. Regional prototypes have
proved critical for development and for regional applications. Sectorspecific systems (e.g., for global climate estimates) are also an
important aspect. Reanalyses are an important strategy.
An outstanding issue for GODAE, with implications for assimilation and
prediction, is the degree to which the key fields mentioned above are
predictable and, secondly, the extent to which provided fields (boundary
conditions, initial conditions, other inputs) in effect enhance predictability
(skill) to the target systems. The applied nature of GODAE only allows it to
address these issues in passing, so again it is important that supporting
research is fostered to test and understand all aspects of predictability. Note
that in the context of GODAE, such research applies not only to temporal
predictions (forecasts) but to the more general context (see Fig. 1).
The use of a variety of approaches to modeling and assimilation is
regarded as a strength in the strategy of GODAE. Within a framework of
intercomparison and progressive evaluations, the diversity of approaches can
be used to quantify uncertainties and test reliability of ocean state estimates
and initial conditions and forecasts.
Perspective #5:
The oceans are predictable … but when and
where, and for how long? What are the dependencies and
limitations? Observations? Representation of ocean dynamics and
physics? Assimilation? Parameterizations? GODAE will provide only
the first installment in our quest to address these issues.
6.
The utility of GODAE outputs
The key outcome will be significant improvement in the detail, quality,
timeliness, availability and usefulness of ocean analysis and prediction
products. The reader is also referred to the GODAE Implementation Plan on
http://www.bom.gov.au/GODAE/ for detail of activities by different groups
and a more complete description of applications.
11
require attention to the upper ocean physical parameterizations and the
vertical transports (upwelling). All require considerable computational
resources for global simulation and so rely on advanced software
developments to take advantage of state of the art computer technology.
Perspective #4:
Global high-resolution ocean model assimilation
systems are the main focus of GODAE. Regional prototypes have
proved critical for development and for regional applications. Sectorspecific systems (e.g., for global climate estimates) are also an
important aspect. Reanalyses are an important strategy.
An outstanding issue for GODAE, with implications for assimilation and
prediction, is the degree to which the key fields mentioned above are
predictable and, secondly, the extent to which provided fields (boundary
conditions, initial conditions, other inputs) in effect enhance predictability
(skill) to the target systems. The applied nature of GODAE only allows it to
address these issues in passing, so again it is important that supporting
research is fostered to test and understand all aspects of predictability. Note
that in the context of GODAE, such research applies not only to temporal
predictions (forecasts) but to the more general context (see Fig. 1).
The use of a variety of approaches to modeling and assimilation is
regarded as a strength in the strategy of GODAE. Within a framework of
intercomparison and progressive evaluations, the diversity of approaches can
be used to quantify uncertainties and test reliability of ocean state estimates
and initial conditions and forecasts.
Perspective #5:
The oceans are predictable … but when and
where, and for how long? What are the dependencies and
limitations? Observations? Representation of ocean dynamics and
physics? Assimilation? Parameterizations? GODAE will provide only
the first installment in our quest to address these issues.
6.
The utility of GODAE outputs
The key outcome will be significant improvement in the detail, quality,
timeliness, availability and usefulness of ocean analysis and prediction
products. The reader is also referred to the GODAE Implementation Plan on
http://www.bom.gov.au/GODAE/ for detail of activities by different groups
and a more complete description of applications.