Information identified as archived on the Web is for reference, research or recordkeeping purposes. It has not been altered or updated after the date of archiving. Web pages that are archived on the Web are not subject to the Government of Canada Web Standards. As per the Communications Policy of the Government of Canada, you can request alternate formats on the Contact Us page.
Help the Government of Canada organize its website!
Complete an anonymous 5-minute questionnaire. Start now.
RAISON Technology: Capturing Knowledge - Making Better Decisions
|By: Kristin May (S&T Liaison)|
Environmental problems are complex. Often, they are multidisciplinary, bridging the physical, chemical and ecological sciences. Frequently they are multifaceted involving air, water, soil and biota. Although data and predictive models are readily available to support research on complex environmental issues, researchers can run into difficulty when using them.
Data are often in disparate formats covering varying time spans and spatial scales. Connecting models from different disciplines can also produce problems because of differing scales and difficulties in matching assumptions and applicability. A tool is needed to pull it all together, trim the extraneous information and fill gaps so that decision makers can ask questions and receive coherent answers.
Seeking Solutions through S&T
This tool is a decision support system – computer software that helps decision makers locate relevant information, and create accurate summaries, risk analyses, and optimal solutions. In essence, it provides scientific answers to management questions.
In the 1980s Environment Canada scientists developed an environmental decision support system called RAISON (Regional Analysis by Intelligent System ON microcomputer). RAISON was initially intended to support managers dealing with the acid rain problem. It included a database that stored air, water, soil and biota data from federal, provincial and other agencies, and could statistically summarize the data, produce time trend plots or show spatial distributions on a map.
The main focus was the expert system component that could capture scientific knowledge such as rules to select appropriate models and data for a given problem. Not only were various computer models from scientists of different disciplines assembled, but the scientific knowledge associated with the assumptions and proper usage of the models and data were also captured. These components worked seamlessly together and were generically designed so the system was adaptable beyond the acid rain problem: for example in the diagnosis of conditions of drinking water wells, mine effluent discharges and Great Lakes water quality data analysis.
In the 1990s, the DOS version of RAISON was upgraded to work in the Windows environment, modules were upgraded and new features added based on user feedback. Desktop applications for issues now included watershed management, toxic substances, wildlife habitats and benthic assessment.
In the 2000s, the Internet paved the way for public access to scientific information and data, and heightened interest in communication of environmental problems to a wide range of users. RAISON Technology was upgraded as web-based technology to supplement desktop applications. Collaborative modelling was started where scientists could jointly develop integrated models from different disciplines and media using web-based technology. These technologies speed up collaborative efforts and make data analysis and model applications more transparent.
Transforming Knowledge into Action
Who can use these results?
Since the RAISON System is a generic technology, it is easily applied to many environmental problems and has been used by policy and decision makers at local, national and international levels to take action on various environmental issues.
An example of long-term application is the Integrated Assessment Model (IAM) for acid rain, which covers 30 years and over 10,000 lakes. IAM assembles and links air, water, soil, wildlife, fish, ecological and economic data and models developed and provided by federal, provincial and other partners. This decision support system consists of several modules designed to offer scientific answers to a set of management questions. For example, based on average air trajectories, it can identify the top five provinces or states in North America that may have emitted most of the sulphur dioxide that could eventually deposit on a given site in Canada.
IAM and its results were used by Environment Canada and partners in the Canadian Acid Deposition Science Assessments in 1985, 1990, 1997 and 2004. It provided the only avenue to see what was improving. Over these two decades, new and improved models, including those on nitrogen oxides, were incorporated in the IAM, and new data, particularly from Western Canada, were added.
Benefits to Canadians
RAISON technologies benefit Canadian taxpayers. Better synthesis of knowledge to make more sustainable decisions in a timely fashion can expedite cleanup and protection, giving optimum value for dollars spent on pollution reduction.
Decision makers in many jurisdictions have benefited from RAISON tools made available through technology transfer to other government agencies, and by collaboration with partners and the private sector. Without this technology transfer, these agencies and companies would not have been able to adequately carry out their mandates. More recently the technology has been used to make data and tools available to the public and technical users online. This empowers nontraditional audiences such as the public to engage in informed discussion and program shaping.
For more information:
Booty, W.G., D.C.L. Lam, A.G. Bobba, I. Wong, D. Kay, J.P. Kerby and G.S. Bowen. 1992. An expert system for water quality modeling. J. Environmental Monitoring and Assessment 23: 1-18.
Lam, D.C.L. and D.A. Swayne. 1992. Some experiences in applying the RAISON expert system to environmental problems, p. 59-64. In J.W. Brahan and G.E. Lasker (ed.), Advances in Artificial Intelligence - Theory and Application, Int. Institute for Advanced Studies in Systems Research and Cybernetics, Baden, Germany.
Booty, W.G. and I.W.S. Wong. 1994. Water quality modelling within the RAISON expert system. J. Biological Systems 2(4): 453-466.
Lam, D.C.L., K.J. Puckett, I. Wong, M.D. Moran, G. Fenech, D.S. Jeffries, et al. 1998. An integrated acid rain model for Canada using the RAISON for Windows system. Wat. Qual. Res. J. Canada 33: 1-17.
Booty, W.G., D.C.L. Lam, I.W.S. Wong and P. Siconolfi. 2001. Design and implementation of an environmental decision support system. Environmental Modelling and Software 16: 453-458.
Lam, D.C.L. and D.A. Swayne. 2001. Issues of environmental information system (EIS) software design: some lessons learned in the past decade. Env. Modelling and Software 16: 419-425.
Wong, I.W., R. Bloom, D.K. McNicol, P. Fong, R. Russell and X. Chen. 2007. Species at risk: data and knowledge management within the WILDSPACE decision support system. Environmental Modelling & Software 22: 423-430.
Booty, W.G., I. Wong, D. Lam and O. Resler. 2009. A decision support system for environmental effects monitoring. J. Env. Modelling and Software 24(8): 889-900.
Wong, I.W., W.G. Booty, G. Benoy, C. Nielsen, P. Fong and R.C. McCrimmon. 2009. Integrated land and water scenarios of the Raisin River watershed using the SWAT model. Water Qual. Res. J. Canada. 44(4): 379-391.
Booty, W. and I. Wong. 2010. Case studies of Canadian environmental decision support systems. In Chiang S. Jao (ed.), Decision Support Systems, ISBN: 978-953-7619-64-0, INTECH.
Leon, L.F., W. Booty, I. Wong, G. McCrimnon, S. Melles, G. Benoy and J. Vanrobaeys. 2010. Advances in the integration of watershed and lake modeling in the Lake Winnipeg Basin. In Proceedings of the iEMSs, International Conference on Environmental Modelling and Software, Jul. 2010.
S&T Liaison | Tel 905 315 5228 | Fax 905 336 4420 | www.ec.gc.ca/scitech/S&Tintoaction
© Her Majesty the Queen in Right of Canada, represented by the Minister of Environment, 2010.
- Date Modified: