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== Background ==
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= The Common Integrated Assessment Model (CIAM) documentation =
  
Integrated assessment models (IAMs) and energy-economy models have become central tools for informing decision makers and society at large about the choices for long-term global and regional climate mitigation strategies. There is an increasing demand for improved representations of complex energy, climate and land-use system interactions and thorough validation of model behavior in order to increase user confidence in climate policy assessments. The ADVANCE project, sponsored by the European Commission under its 7th Framework Programme, responds to this demand by facilitating the development of a new generation of IAMs. In the past, methodological innovations and improvements in IAMs and their application to policy making were hindered by the difficulties in communicating complexities in modeling and data approaches. The ADVANCE project is trying to make a coordinated effort on improving model transparency, model validation, and data handling.
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== Integrated assessment modeling ==
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Integrated assessment models (IAM) aim to provide policy-relevant insights into global environmental change and sustainable development issues by providing a quantitative description of key processes in the human and earth systems and their interactions. The modelling is integrated, i.e. it uses information from many scientific disciplines and describes both the human and earth system. The term assessment refers to focus on generating useful information for decision-making, even in case of large uncertainties. IAMs, for instance, have been successfully applied in support of climate policy (insights in future greenhouse gas emissions and options for mitigation), in several environmental assessments (e.g. the Millennium Ecosystem Assessment), but IAMs have also published a large amount of scientific papers.
  
A central objective of ADVANCE is to provide harmonized documentation that elucidates the structure, assumptions, limitations and input data of all participating IAMs in the ADVANCE project. To make this effort useful beyond the immediate project participants it was decided to start a review process that involves both the broader modeling community as well as stakeholders interested in model results. Beyond the review process, it is planned to invite other modeling teams to also provide their model documentation in the harmonized format developed by the ADVANCE project consortium. So far, documentation for eight models is available and listed in Table 1 below.
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== Documentation ==
 
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For the purpose of IAMs, a transparent model documentation is essential. IAM teams have documented their models individually, often using web-supported tools. As IAMs, however, are often used together it is also important to have information on the similarities and differences across IAM models. This database provides an overview of the IAM models using a transparent wiki-based approach that has been used consistently across a range of models. This allows for direct comparison of these models. In addition to the harmonized model documentation, also [[Special:RunQuery/Models-AttributesForm|Models - attributes]] allow for direct comparisons.
==Objectives==
 
 
 
As part of a consultation process with stakeholders involved in the ADVANCE project, it was decided as a first step to develop documentation at two levels of aggregation. It was envisaged that this approach would be particularly helpful for policy makers and other users of model results in understanding key differences between modeling approaches and the representation of different sectors in IAMs. It thus needs to be emphasized that this documentation was not designed to provide information at a level that would enable other researchers to rebuild models and reproduce the results of existing scenarios. However in principle, the current structure of the harmonized model documentation allows for providing extra information as part of appendices describing a model’s mathematical formulation and input data, although no effort has been made to harmonize the extent or format to which such information is provided. Developing a documentation standard that would include model code as well as input datasets is a potential follow-up activity.
 
 
 
The two levels of aggregation for model documentation are described as:
 
 
 
* “Reference cards” which are designed to provide a quick overview of the most important model characteristics, in the form of bulleted lists and tables. The structure of these 2-page reference cards is identical for all participating models to facilitate an easy comparison of main features across models. The key aim of the reference cards was for an accessible document to provide insight for decision makers.
 
* More comprehensive documentation (some 30 pages) that use a standardized but flexible template, to describe the models’ specificities. This documentation elucidates model structure, mathematical formulations, and to some extent relevant input data sets. In addition, there is the possibility to include appendices with more detailed information on, for example, mathematical formulations and data sets used. The audience for the documentation is energy-land-climate modelers, technical staff in government and firms, and PhD students and postdoctoral researchers new to the field.
 
  
 
== Participating models ==
 
== Participating models ==
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== Acknowledgement ==
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The development of this wiki-based multi-model documentation received input from the FP7 ADVANCE project. The current version benefitted from the work of an earlier version developed at University College London. The wiki also benefitted from comments and suggestions of other modelling teams part of the Integrated Assessment Modelling Consortium. Integrated Assessment Model teams interested in joining this common documentation platform should contact ([tomail:Rineke.oostenrijk@pbl.nl])
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== Other forms of common model evaluation ==
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IAM models also collaborate in other ways in order to enhance the transparency of IAM model output. First of all, various databases, such as the RCP and SSP databases, host the output of several IAMs in a common format. Second, IAM models have also produced common evaluation metrics, distilled from common simple model experiments (see Kriegler et al., xxx).

Revision as of 09:40, 20 September 2016

The Common Integrated Assessment Model (CIAM) documentation

Integrated assessment modeling

Integrated assessment models (IAM) aim to provide policy-relevant insights into global environmental change and sustainable development issues by providing a quantitative description of key processes in the human and earth systems and their interactions. The modelling is integrated, i.e. it uses information from many scientific disciplines and describes both the human and earth system. The term assessment refers to focus on generating useful information for decision-making, even in case of large uncertainties. IAMs, for instance, have been successfully applied in support of climate policy (insights in future greenhouse gas emissions and options for mitigation), in several environmental assessments (e.g. the Millennium Ecosystem Assessment), but IAMs have also published a large amount of scientific papers.

Documentation

For the purpose of IAMs, a transparent model documentation is essential. IAM teams have documented their models individually, often using web-supported tools. As IAMs, however, are often used together it is also important to have information on the similarities and differences across IAM models. This database provides an overview of the IAM models using a transparent wiki-based approach that has been used consistently across a range of models. This allows for direct comparison of these models. In addition to the harmonized model documentation, also Models - attributes allow for direct comparisons.

Participating models

ModelInstitution
AIM-Enduse IndiaIndian Institute of Management Ahmedabad (IIMA), India, https://www.iima.ac.in/.
AIM-Enduse JapanKyoto University (KU), Japan, https://www.kyoto-u.ac.jp/en/.
National Institute for Environmental Studies (NIES), Japan, .
AIM-HubNational Institute for Environmental Studies (NIES), Japan, https://www.nies.go.jp/index-e.html.
AIM-Hub KoreaUniversity of Seoul (UOS), South-Korea, www.uos.ac.kr.
AIM-Hub Viet NamVietnam National University Ho Chi Minh City (HCMIU), Viet Nam, https://ev.hcmiu.edu.vn/en/home/.
BETCentral Research Institute of Electric Power Industry (CRIEPI), Japan, https://criepi.denken.or.jp/en/.
BLUESCOPPE/UFRJ (Cenergia), Brazil, http://www.cenergialab.coppe.ufrj.br/.
C3IAMCenter for Energy and Environmental Policy Research, Beijing Institute of Technology (CEEP-BIT), China, http://ceep.bit.edu.cn/english/.
COFFEE-TEACOPPE/UFRJ (Cenergia), Brazil, http://www.cenergialab.coppe.ufrj.br/.
China TIMESTsinghua University (Tsinghua University), China, https://www.tsinghua.edu.cn/en/.
DNE21+Research Institute of Innovative Technology for the Earth (RITE), Japan, http://www.rite.or.jp/en/.
E3ME-FTTCambridge Econometrics (CE), United Kingdom, https://www.camecon.com/.
Global System Institute, University of Exeter (UNEXE), United Kingdom, https://www.exeter.ac.uk/gsi/.
School of Environment, Earth and Ecosystems Sciences, The Open University (OU), United Kingdom, http://www.open.ac.uk/science/environment-earth-ecosystems/.
EPPAMassachusetts Institute of Technology (MIT), USA, https://globalchange.mit.edu/.
GCAMPacific Northwest National Laboratory, Joint Global Change Research Institute (PNNL, JGCRI), USA, http://www.globalchange.umd.edu.
GEM-E3Institute of Communication And Computer Systems (ICCS), Greece, https://www.iccs.gr/en/.
GRACECenter for International Climate Research (CICERO), Norway, https://cicero.oslo.no/en.
ICESEuro-Mediterranean Center on Climate Change (CMCC), Italy, https://www.cmcc.it/.
IFsFrederick S. Pardee Center for International Futures, University of Denver (Pardee Center), Colorado, USA, https://pardee.du.edu/.
IMACLIMCentre international de recherche sur l'environnement et le développement (CIRED), France, http://www.centre-cired.fr.
Societe de Mathematiques Appliquees et de Sciences Humaines (SMASH), France, http://www.smash.fr.
IMACLIM-IndiaIndian Institute of Management Ahmedabad (IIMA), India, www.iima.ac.in.
Indian Institute of Management Lucknow (IIML), India, www.iiml.ac.in.
IMACLIM-NLUCentre international de recherche sur l'environnement et le développement (CIRED), France, http://www.centre-cired.fr.
Societe de Mathematiques Appliquees et de Sciences Humaines (SMASH), France, http://www.smash.fr.
IMAGEPBL Netherlands Environmental Assessment Agency (PBL), Netherlands, https://www.pbl.nl/en.
Utrecht University (UU), Netherlands, https://www.uu.nl/en.
IPAC-AIM technologyEnergy Research Institute (ERI), China, http://en.cctp.org.cn/m5/product/35982.html.
IPAC-GlobalEnergy Research Institute (ERI), China, http://en.cctp.org.cn/m5/product/35982.html.
IPETSNational Center for Atmospheric Research (NCAR), USA, https://ncar.ucar.edu/.
MARKAL-IndiaThe Energy and Resources Institute (TERI), India, www.teriin.org.
MEDEASGroup of Energy, Economy and Systems Dynamics, University of Valladolid (GEEDS-UVa), Spain, https://geeds.es/en/.
MESSAGE KoreaKorea Advanced Institute of Science and Technology (KAIST), South-Korea, https://www.kaist.ac.kr/en/.
MESSAGE-GLOBIOMInternational Institute for Applied Systems Analysis (IIASA), Austria, http://data.ene.iiasa.ac.at.
MUSEImperial College London (Imperial College London), UK, https://www.imperial.ac.uk/.
POLESJRC - Joint Research Centre - European Commission (EC-JRC), Belgium, http://ec.europa.eu/jrc/en/.
PROMETHEUSE3Modelling (E3M), Greece, https://e3modelling.com/modelling-tools.
REMINDPotsdam Institut für Klimafolgenforschung (PIK), Germany, https://www.pik-potsdam.de.
TIAM-UCLUniversity College London (UCL), UK, https://www.ucl.ac.uk.
WITCHEuropean Institute on Economics and the Environment (RFF-CMCC EIEE), Italy, http://www.eiee.org.

Acknowledgement

The development of this wiki-based multi-model documentation received input from the FP7 ADVANCE project. The current version benefitted from the work of an earlier version developed at University College London. The wiki also benefitted from comments and suggestions of other modelling teams part of the Integrated Assessment Modelling Consortium. Integrated Assessment Model teams interested in joining this common documentation platform should contact ([tomail:Rineke.oostenrijk@pbl.nl])

Other forms of common model evaluation

IAM models also collaborate in other ways in order to enhance the transparency of IAM model output. First of all, various databases, such as the RCP and SSP databases, host the output of several IAMs in a common format. Second, IAM models have also produced common evaluation metrics, distilled from common simple model experiments (see Kriegler et al., xxx).

References

  1. ^  Elmar Kriegler, Nils Petermann, Volker Krey, Valeria Jana Schwanitz, Gunnar Luderer, Shuichi Ashina, Valentina Bosetti, Jiyong Eom, Alban Kitous, Aurélie Méjean, Leonidas Paroussos, Fuminori Sano, Hal Turton, Charlie Wilson, Detlef Van P Vuuren (2015). Diagnostic indicators for integrated assessment models of climate policy. Technological Forecasting and Social Change, 90, Part A (), 45 - 61. http://dx.doi.org/10.1016/j.techfore.2013.09.020