SeaDataNet Virtual Educational Centre > Data Tools and Models
Data Tools and Models
Visualization.
The first significant examples of Marine Information Systems were developed during the '60s. Until the '80s the data management was composed of many independent processes: data collection; pre-processing; storage in files. Graphical representation and dissemination were part of the scientific study of the ocean dynamics. Today an efficient information strategy includes visual representation of data (graphs, maps, ...), as a tool for dissemination of data among users and the public.
Quality control. There are areas were the use of term 'data' is often controversial: a) processed versus raw measurements, b) model outputs versus observations, c) images versus digital underpinnings. Scientist strive to fully characterise their data to enable a better understanding of its limitations.
Use of data can be limited by the lack of certain attributes such as: procedures for collection, conditions during
collection, instrumentation, temporal and spatial referencing, error or uncertainty, indications on quality assurance
procedures.
Analysis. Working with data provides opportunities
for quantitative analysis and reasoning, broad discussion and debate to evolve scientific understanding.
Models.
We define as model an idealisation that embodies certain aspects of the 'real ocean'. Models provide an experimental apparatus for the scientific rationalisation of the ocean phenomena. In the presentation of ocean model fundamentals, it is useful to start with a discussion on fluid kinematics.