PAGE simulates the economic and environmental impact of policies to address climate change. The launch verison of the Climate Collaboratorium uses only one a single module of PAGE, the one that assesses the economic cost of damages caused by climate change.
Overview
 Model name  Policy Analysis of the Greenhouse Effect (PAGE) 
  Brief description  PAGE projects future increases in global mean temperature (GMT), the economic costs of damanges caused by climate change, and the economic costs of mitigation policies and adaptation measures that are adopted. 
  Model developer(s)  Chris Hope (with John Anderson, Paul Wenman, and Erica Plambeck) 
  Institutional affiliation of developer(s)  Judge Business School, University of Cambridge
  Date created  1991
  Date of most recent revision  2002 (updated version known as PAGE2002)
  Model accessibility  Model is run by developers to test various policy scenarios, with results published extensively (see list of publications below). 
  Documentation  Chris Hope. 2006. The Marginal Impact of CO2 from PAGE 2002: An Integrated Assessment Model Incorporating the IPCC's Five Reasons for Concern. Integrated Assessment Journal 6 (1): 9-56. 
  Key publications  Simon Dietz, Chris Hope, Nicola Patmore. 2007. Some economics of 'dangerous' climate change: Reflections on the Stern Review. Global Environmental Change 17: 311-325. 
Model attributes
 Model type  For example, General circulation model (GCM) or Integrated assessment model (IAM) or other (followed by acronym)
  Geographic scope  Extent of geographic coverage
  Geographic resolution  Level of geographic disaggregation
  Start date  Earliest date when model runs can begin
  End date  Latest date when model runs can end
  Time step  Number of years between discrete
  Data sources List of the key data sources used in the model, with links if possible  
  Approach for addressing risk/uncertainty  Brief phrase describing how model deals with risk/uncertainty e.g. stochastic modeling approach, estimations of uncertainty based on variances in input values for discrete variables etc. 
  Key modules and linkages between them  
 Note: Include only if multiple modules, and if so, include next major header, “Variables and key assumptions,” for each 
  Model structure  Describe in words or insert model diagram if one is available. Graphics files, such as jpeg's and gif's, can be inserted by using the picture icon in the upper left corner of the editing screen (under the tab labeled "Wiki Markup"). By default, pictures are initially inserted at the bottom of the wiki page, but they can subsequently be moved by cutting and pasting the file name and surrounding formatting characters. 
This write up of PAGE includes three major sections:
- PAGE overview
- PAGE attributes
- PAGE modules - Economic costs of damages
- Non-econonomic costs of damages
- Impact of adaptation
 
Variables and key assumptions
 Input variables  
  Key assumptions  Explain in words and include equations if available
  Output variables  
 Note: As noted above, if there are multiple modules, include section like this for each, with module name at start of header, followed by a colon. 
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