CD-LINKS Stocktaking/Fast-track Database (version 1.0):


This database hosts the results of the (CD-LINKS) stocktaking and fast-track exercises. It is meant to make the data collection process more efficient and relies on accurately filled data templates as distributed in the CD-LINKS stocktaking and diagnostics exercises. Access to the database requires prior registration of model and users. Further, the registration procedure demands information about the regional composition of the model to be registered and how the native model regions map to set of predefined regions. This information needs to be provided in a standardized registration form which can be downloaded here. More information about the data template structure can be found in the IAMC data template and database documentation.


Access to the database requires prior registration of model and users. Further, the registration procedure demands information about the regional composition of the model to be registered and how the native model regions map to set of predefined regions. The following steps are necessary to submit scenario data to the CD-LINKS Stocktaking Database:

  1. A registration form needs to be completed by each modeling team and sent via e-mail to CD-LINKS Database Administrator. The registration form contains the model name, the model's regional composition, how the native model regions map to set of predefined regions and meta data about the main characteristics of the model. In addition, basic user-related information to set up user accounts for the modeling groups is asked for. Please consult the instructions tab in the registration form for detailed instructions and additional guidance on the region mapping.
  2. After successful registration of the model and its users, a confirmation e-mail will be sent to the users after which scenario results can be submitted to the web-database using a standardized IAMC data template. In addition to time-series data for the scenarios, it is required to submit scenario-specific meta data which is important for classifying the scenarios along several dimensions.
  3. After uploading a template with scenario data, you will receive an e-mail confirmation about the status of the submission and eventually log file with a detailed description of potential issues that were encountered in the import procedure. The log file should be carefully inspected and you may also want to use the visulaization capabilities of the web-database to visually check the uploaded scenario results. Please consult the instructions tab in the data template as well as the Database tutorial on this page for further details on the procedure.
As guidance for completing the registration form and data template, here are a sample registration form from IIASA's MESSAGE modeling team.

A short tutorial on the use of the web database can be found below. If you experience technical problems with this database, please contact the CD-LINKS Database Administrator.

A short tutorial on the use of the database

The Navigation tabs

At the upper end of the browser window five navigation tabs can be found that provide different functionality of the web database. These five tabs are described in more detail in the following section.

About tab

The About tab provides information about the database and gives instructions on how to use the database. With exception of the About tab which can be viewed without special permissions, all other tabs require a valid user account (login and password) for the database. After entering the credentials the four additional tabs to navigate the database can be accessed. Which scenarios can be viewed depends on the individual user permissions (see User account). The difference between these three tabs for viewing is the way how scenario data can be combined for viewing.

Common Features of the Sectors, Series, and Scatter tabs

In all three view tabs the following selections can be made in the navigation bars on the upper left-hand side of the browser window:

(1.) Regions: In the upper left area of the screen is a field named Regions. Depending on the tab (see above) you may select one or multiple regions for which the data is shown on the screen. Generally the regions are organized in the two folders Compare and Model Name. While in the Compare folder you can find regions that are (approximately) defined across many models (World, five macro regions and seven countries commonly compared in modeling comparison exercises, see Region definitions), the Model name folder contains the native regions that you report to the database.

(2.) Scenarios: This field includes the list of scenarios from which one or more scenarios can be selected. In addition to scenarios, for a number of variables historical and base year data can be shown to compare with scenario results. Note that historical data is only available for the regions in the Compare folder (see also previous paragraph) and that currently only some emission and energy variables are covered. Further, displaying historical data is at the moment restricted to the Sectors tab.

(3.) Variables: In this field the variables can be selected for which the data is shown on the screen. Note that in the Sectors tab it is necessary to not only required to tick one or multiple variables for selection, but also to mark a variable name (highlighted in blue) for the graph on the right hand side to be updated. It is not important which variable or variable category is marked to initiate the graph update.

The Chart Preview on the upper right-hand side of the browser window shows the graph of the selected data (variable + scenarios + regions). In addition, the horizontally oriented Query Results area in the middle of the screen shows the data in tabular format.

It is possible to export the data either into Excel or two different graphical formats (PNG = portable network graphics, SVG = scalable vector graphics). In order to do so, select one of the options in the Output Options window at the bottom of the browser window. The field titled Notes shows additional information or explanatory text for the selected variables. The availability of notes is still under development and ultimate the contents will depend on input from modeling teams.

Manage tab

The Manage tab provides an overview of the scenarios that are currently in the database, shows logs of scenario operations (additions and deletes) and allows users with sufficient permissions to upload and delete scenarios from the database.

Uploads can be initiated in the upper part of the Manage tab by means of a file selector that shows up when clicking the Browse... button. In the file selector a valid template in Microsoft Excel 2003 (*.xls) or 2007 (*.xlsx) formats can be chosen. By clicking the Upload file button the upload procedure is started. After the successful upload, a short message is shown above the file selector that acknowledges whether the upload itself has been successful and which next steps have been taken. If the uploaded file is a valid template, the import procedure will be initiated and a message in a green frame is shown. This "green" acknowledgment does not imply that the whole procedure was successful, but just means that the file upload was successful and the file has a format readable by the database import algorithm. In case the upload itself did not work or if the file has a format that is not supported by the import algorithm (e.g. Excel 1997 format which also has the *.xls extension), an error message with more details on the problem surrounded by a red frame is shown. As the import procedure, depending on the size of the template and the number of regions and scenarios, can take several minutes, you will be acknowledged about the progress by e-mail. Therefore it is important that your account information (see details about User account below) is up-to-date. The e-mail will contain information on whether the import was in general successful and the most important warnings (e.g. unknown variable names, variables not provided) and errors in its main text. A more extensive log file is attached to the e-mail. It is important that you check the log file carefully to ensure that not just the overall import was successful, but also that all data you provided made it to the database. Please note that uploading a scenario with the name of an existing scenario results in overwriting the previously existing scenarios. Upon successful import of the scenario(s), you can view the data using the three view tabs described above. It is strongly recommended to have a look at the data, making use of the online visualization capabilities of the database.

Below the upload section of the Manage tab, you can find the list of scenarios that are currently in the database. In case you are a modeling group member, you will only see the scenarios of your own model. If you are a project coordinator scenarios from multiple models will be shown here. If you have upload permissions a Delete button will be shown behind the scenario name. Clicking this button will delete the scenario from the database which cannot be reversed.

Further below the scenario table, a log section is displayed. The log section includes the date and time of successful imports, the user who uploaded the scenario(s), both model and scenario name, a link to original template file that was uploaded and a link to the log file of the respective import procedure (the same log file that was sent by e-mail).

User account

There are three types of database users:

  • Modeling group members who can view scenarios of their model.
  • Modeling group members who can view and upload scenarios of their model.
  • Project coordinators who can view all scenarios of all models that belong to a specific comparison exercise.
The My account link in the right lower corner of the browser window allows you to change your user account data (password, e-mail address and other contact details) with the exception of the login name. It is recommended to change the password upon first login. Keeping the e-mail address up-to-date is particularly important, because the results of the import procedure will be sent via e-mail.

Log file and data quality control

When uploading a scenario data template, a log file is automatically generated and sent to the user who initiated the upload by e-mail. The log file contains important information about the upload procedure and should be checked carefully to evaluate whether the upload can be considered successful. The log file consists of 6 sections.

  1. Parse DATA section: general information on the import process of the "data" sheets included in the uploaded template
  2. Check REGIONs section: information on region names used in the template that are not known to the import algorithm, i.e. which are among the pre-defined regions or the regions registered for the specific model
  3. Check VARIABLEs section: information on variable names which are not known to the import algorithm or which are part of the original template, but have not been submitted in the upload
  4. Check HISTORY section: comparison of the submitted base year scenario data with available statistical data (see details below)
  5. IMPORT into database section:
  6. Parse COMMENTs section: summary information on the scenarios that were imported into the database

Comparison of historical and scenario data

When importing scenario data into the database, some quality data control routines are in place that compare submitted base year data with available statistics. The relevant information of the comparison can be found in the log file that is sent to you after uploading new scenarios to the database. Currently statistical data is only available for the following categories: Population, GDP (MER and PPP), Primary Energy, Secondary Energy|Electricity, Final Energy, and Fossil and Industrial CO2 emissions for the World. Historical data is from various sources, i.e. from UN (population), the World Bank (GDP), the IEA Energy Balances (energy) and CDIAC (CO2 emissions). The comparison will be performed for the first year submitted which is assumed to be the base year a model is calibrated to. The following rules are applied to global level data in the comparison at present:

  • An information (INFO) or warning (WARN) is issued if the model's base year data is outside the range of a factor of 1/(1 + f) to 1 + f around the historical value where f is - depending on the variable - 10 to 25%.
  • An error (ERROR) is issued if the model's base year data is outside the range of a factor of 1/(1 + f) to 1 + f around the historical value where f is - depending on the variable - 25 to 50% which in many cases will hint at a unit issue or similar. An error will lead to the rejection of the scenario submission.
Please have a look at the "Check HISTORY section" of the log file and check for these types of messages. Please keep in mind that different sectoral aggregation or variable definitions that do not match the definition as supplied in the template can be responsible for the deviations as well. A list of the data sources used for historical data and the exact f values used for the various variables can be found here. Feedback that helps improving the algorithm is very much welcome.

Region definitions

The consolitated results in the database are shown at regional aggregations of the World, five macro regions and seven individual countries/regions that are commonly used in scenario analysis. These regions are defined as follows:

Aggregation on the five region level

OECD90+EU = Includes the OECD 1990 countries as well as EU members and candidates.
Albania, Australia, Austria, Belgium, Bosnia and Herzegovina, Bulgaria, Canada, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Fiji, Finland, France, French Polynesia, Germany, Greece, Guam, Hungary, Iceland, Ireland, Italy, Japan, Latvia, Lithuania, Luxembourg, Malta, Macedonia, Montenegro, Netherlands, New Caledonia, New Zealand, Norway, Poland, Portugal, Romania, Samoa, Serbia, Slovakia, Slovenia, Solomon Islands, Spain, Sweden, Switzerland, Turkey, United Kingdom, United States of America, Vanuatu

REF = Countries from the Reforming Ecomonies of the Former Soviet Union.
Armenia, Azerbaijan, Belarus, Georgia, Kazakhstan, Kyrgyzstan, Republic of Moldova, Russian Federation, Tajikistan, Turkmenistan, Ukraine, Uzbekistan

ASIA = The region includes most Asian countries with the exception of the Middle East, Japan and Former Soviet Union states.
Afghanistan, Bangladesh, Bhutan, Brunei Darussalam, Cambodia, China, China Hong Kong SAR, China Macao SAR, Democratic People's Republic of Korea, East Timor, India, Indonesia, Lao People's Democratic Republic, Malaysia, Maldives, Mongolia, Myanmar, Nepal, Pakistan, Papua New Guinea, Philippines, Republic of Korea, Singapore, Sri Lanka, Taiwan, Thailand, Viet Nam

MAF = This region includes the countries of the Middle East and Africa.
Algeria, Angola, Bahrain, Benin, Botswana, Burkina Faso, Burundi, Cameroon, Cape Verde, Central African Republic, Chad, Comoros, Congo, Cote d'Ivoire, Democratic Republic of the Congo, Djibouti, Egypt, Equatorial Guinea, Eritrea, Ethiopia, Gabon, Gambia, Ghana, Guinea, Guinea-Bissau, Iran (Islamic Republic of), Iraq, Israel, Jordan, Kenya, Kuwait, Lebanon, Lesotho, Liberia, Libyan Arab Jamahiriya, Madagascar, Malawi, Mali, Mauritania, Mauritius, Morocco, Mozambique, Namibia, Niger, Nigeria, Oman, Qatar, Reunion, Rwanda, Saudi Arabia, Senegal, Sierra Leone, Somalia, South Africa, Sudan, Swaziland, Syrian Arab Republic, Togo, Tunisia, Uganda, United Arab Emirates, United Republic of Tanzania, Western Sahara, Yemen, Zambia, Zimbabwe

LAM = This region includes the countries of Latin America and the Caribbean.
Argentina, Bahamas, Barbados, Belize, Bolivia, Brazil, Chile, Colombia, Costa Rica, Cuba, Dominican Republic, Ecuador, El Salvador, Guadeloupe, Guatemala, Guyana, Haiti, Honduras, Jamaica, Martinique, Mexico, Netherlands Antilles, Nicaragua, Panama, Paraguay, Peru, Puerto Rico, Suriname, Trinidad and Tobago, Uruguay, Venezuela

Seven individual countries/regions commonly used in scenario analysis

ARG = Argentine Republic
AUS = Commonwealth of Australia
BRA = Federative Republic of Brazil
CAN = Canada
CHN = People's Repulic of China
EU = European Union (28 member countries)
IND = Republic of India
IDN = Republic of Indonesia
JPN = State of Japan
MEX = United Mexican States
RUS = Russian Federation
SAU = Kingdom of Saudi Arabia
SAF = = Republic of South Africa
ROK = Republic of Korea (South Korea)
TUR = Republic of Turkey
USA = United States of America

Frequently Asked Questions (under development)

  1. Do I need to register different model version separately?
    Yes, in case you want to upload scenarios that have been generated with different versions of your model, all model version need to be registered separately, because they will most likely have different features on the "meta_model" tab of the registration form (e.g., different number of regions, different technology coverage). Please make sure to add a version tag to the model name, which then needs to be in all "Model" columns in the registration form, including the "user_data", "meta_model", "model_regions" and the "region_aggregation" tabs and in the data templates.
  2. What happens if I resubmit a previously submitted scenario?
    The previously submitted version of the scenarios gets fully replaced by the new version, i.e. it is first deleted and a new import is started.
  3. Can I submit a scenario batch in multiple files?
    Yes, multiple scenarios can be submitted either in a single file (on a single "data" tab or in multiple tabs the names of which start with "data", such as "data2", "data3", etc.) or in several files (e.g. one scenario per file). Note, however, that it is not possible to submit data belonging to the same scenario in multiple files, because the last file with data belonging to the scenario will always overwrite existing data of that scenario. For diagnostic scenarios, it is important that a the corresponding baseline scenario has either been submitted prior to the other scenarios or that the baseline is part of the scenario batch.
  4. Why do I get an error message that states that I am not allowed to submit scenario data for my model?
    Several reasons exist for such an error message, (i) you may have been registered as a user without submission rights, i.e. you can view scenario data, but not submit, (ii) the model name may include a typo (e.g. different capitalization than in the registered version), (iii) sometimes rows that appear empty are left at the bottom of the data block on the "data" tab which trigger an error about model "." .
  5. I am going to submit several scenarios in a single file. How should I provide accompanying information on the "meta_scenario" tab?
    Please use multiple rows in the "meta_scenario" tab by copying the existing row 3 in the tab as often as needed. Please note that it is mandatory to submit meta data for all scenarios that are included in a template.
  6. Does the order of the variables on the "data" tab matter?
    No, the variable order is absolutely arbitrary, but it is important that each row is completed correctly. Model, scenario, region and variable name need to be provided in each row, since the information is processed automatically. Please note that no spelling information of the model, region and variable names are tolerated.

CD_LINKS Stocktaking Database, 2016
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Responsible for this page: CD-LINKS Database Administrator