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Picture from Haag Atletiek Oliebollencross in the Hague 2008

Contact details Torbjörn Jansson

Address (work): SLU, Department of Economics, Box 7013, SE-750 07 Uppsala
Phone (work): +46 18 671788
Fax (work): +46 18 673502

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Current work:

Torbjörn Jansson is a policy analyst at the AgriFood Economics Centre in Sweden. AgriFood is a collaboration between SLU (the Swedish University of Agricultural Sciences) and Lund University, with the task of bridging the gap between policy making and research. His main tasks include impact analyses of changes in the common agricultural policy for different bodies in Sweden and abroad, but also to participate in research and education at the department of economics at SLU. His research focuses on development and application of simulation models.

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Curriculum Vitae:

2009-... Policy analyst at AgriFood Economics Centre
2006-2009 Quantitative analyst at LEI, Wageningen UR
2003-2006 Doctorate student at University of Bonn. Thesis successfully defended (Summa cum laude!) in 2007.
1999-2003 Quantitative economist at Swedish Institute for Food and Agricultural Economics (SLI), Lund, Sweden (currently on leave of absence)
1999 Assistant Master ("Biträdande adjunkt") Department for Horticultural Economics, Swedish University of Food and Agricultural Economics. During those three months I developed the horticultural economics educational tool HortGame from a German template.
1999 MSc. in Horticulture, Swedish University of Agricultural Sciences (Alnarp)

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Fields of Interest:

  • Quantitative Analysis of Agricultural Policies, especially Rural Development policies.
  • The CAPRI modelling system

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Language skills

Fluent: Swedish (native), English, German

Intermediate: Dutch

Selected Publications:

Nowicky, P. and many more, (2009). Study on the economic, social and environmental impact of the modulation provided for in Article 10 of Council Regulation (EC) No 1782/2003 Directorate General for Agriculture and Rural Development, Contract Nš 30-CE-0162480/00-47
Download from DG Agri.

Jansson, T.; Heckelei, T.(2009). A new estimator for trade costs and its small sample properties. Economic Modelling 26:489-498
See also section on online content below.

Renwick, A.; Reveredo, C.; Jansson, T.(2008). Assessment of the impact of partial decoupling on prices, production and farm revenues within the EU Final report for DEFRA
Get it at DEFRA (UK).

Jansson, T., and Heckelei, T.(2008b). Regional crop supply behaviour in the EU.
Presented on the XII EAAE Congress, on August 26-29, Ghent.
Download paper

Jansson, T., Bakker, M., Schirmann-Duclos, D., Le Mouël, P., Verhoog, D., Verkerk, P.(2008). Dynamic impacts of a financial reform of the CAP on regional land use, income and overall growth.
Presented on the XII EAAE Congress, on August 26-29, Ghent.
Download paper

Jansson, T., Kuiper, M., Banse, M., Heckelei, T., and Adenaeuer, M.(2008). Getting the best of both worlds? Linking CAPRI and GTAP for an economywide assessment of agriculture.
Presented on the GTAP Annual Conference, Helsinki. GTAP Resource #2680
Download paper

Jansson, T., Bakker, M., Boitier, B., Fougeyrollas, A., Helming, J., Meijl, H.v., and Verkerk, H. (2007). Cross sector land use modelling framework. In K. Helming, M. Pérez-Soba, and P. Tabbush (Ed.), Sustainability impact assessment of land use changes. Berlin, Springer.

Jansson, T.(2007). Econometric specification of constrained optimization models. Dissertationen der landwirtschaftlichen Fakultät, Universität Bonn. Published online:
Download thesis

Adenäuer, M.; Jansson, T.; Johansson, H.(2007). Effects of the EU sugar reform on developing countries. In Y. Bourdet, J. Gullstrand, and K. Olofsdotter (Ed.), The European Union and developing countries. Cheltenham, UK. Edward Elgar.

Jansson, T.; Norell, Bo; Rabinowicz, E.(2005). Modelling the impact of compulsory Foot and Mouth Disease insurance. Poster Paper presented at the 2005 EAAE Congress, August 24-27, 2005 in Copenhagen, Denmark.
Download paper (PDF) | Download poster (PDF)

Britz, W.; Jansson, T.; Perez, I.; Wieck, C. (2004). Auswirkungen der MTR-Beschlüsse auf die Landnutzung in den europäischen Regionen und Betrieben – Eine quantitative Analyse mit dem CAPRI Modellsystem. Schriften der Gesellschaft für Wirtschafts- und Sozialwissenschaften des Landbaues, 39: 87-96.
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Bäckstrand, A.; Jansson, T.; Rabinowicz, E. (2003). Effekter av enhetspremie på jordbruket i EU och Sverige (Effects of standard subsidy for the agriculture in EU and Sweden). Sveriges Utsädesförenings Tidskrift (Journal of the Swedish Seed Association) 1: 44-49.

Jansson, T. (2002). Analys av enhetliga arealstöd i EU. SLI-Skrift 1, Swedish Institute for Food and Agricultural Economics. Lund (Sweden): SLI. ISSN 1651-4742
Download or order from www.sli.lu.se/publ.asp

Jansson, T. (2002). Mjölkproduktion utan gränser – Europas bönder på en avreglerad mjölkmarknad. SLI Rapport 5, Swedish Institute for Food and Agricultural Economics. Lund (Sweden): SLI. ISSN 1650-0105
Download or order from www.sli.lu.se/publ.asp

Jansson, T.; Britz, W. (2002). Experiences of using a quadratic programming model to simulate removal of milk quotas. 10th EAAE congress, organised session on milk quotas, August 28 - 31, Zaragoza (Spain).
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Online content

Here you may download the GAMS source files that are required to reproduce the simulation experiments reported in Jansson and Heckelei (2008a), "A new estimator for trade costs and its small sample properties". The usage of each file is documented with comments in the GAMS code. Here we only give a brief overview.

In order to run the estimations, you need to have GAMS installed as well as Java (virtual machine) and gnuplot (referenced below). You also need to create a directory to hold the GAMS source code, create a subdirectory called "rep" that will hold the graphics created by the program, and download the needed programs to the proper directory as described below.

The purpose of the program is to (1) generate a large number of "true but unknown" sets of parameters and data for a transportation model, (2) add disturbances to each parameter and data set, (3) estimate the parameters using the generated observations, and (4) analyse the results of the estimations.

The first three steps are done by the program generateSampleGrid.gms. In order to allow for a large sample size, the program can utilize several processors in parallell. This is described in detail in the program. Furthermore, the program uses two include files: init.gms and savesol.gms which you thus also needs to download to the same folder as the main program generateSampleGrid.gms.

The last step is performed by the program analyseSample.gms. The econometric routine requires the libinclude "rank.gms" to be installed, which should be the case with all recent GAMS systems. In order to obtain full graphical output as in the paper, the program relies on the open source software gnuplot in combination with a modified version of Tom Rutherfords GAMS utility plot.gms which you should download and put in the "inclib" directory of your GAMS installation. Finally, I couldn't get the plot quite right without manipulating the EPS graphics, which is done by the little Java program repStr.class written by me, which just replaces strings inside the EPS files generated by gnuplot. Put repStr.class in a subdirectory called "rep" to the directory where you put "analyseSample.gms". That is also where the graphics will be stored.

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Modelling Expertise:

Torbjörn has actively contributed to the development of the modelling systems of CAPRI and BenImpact. Selected technical papers from CAP-STRAT and IMPETUS:

JANSSON, T. (2006). Impact analysis of different negotiation outcomes in WTO. Technical Paper, July 2006.
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JANSSON, T. (2005). The Economic Model BenImpact. Technical Paper, May 2005.
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JANSSON, T. (2005). The BenImpact Demand System. Technical Paper, January 2005.
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F.JUNKER, C. WIECK, T. JANSSON, I. PEREZ (2003). Policy Representation in the CAPRI Model CAPRI Working paper 03-03
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W.BRITZ, C.WIECK, T.JANSSON (2002). National Framework of the CAPRI-Data Base: The CoCo-Module CAPRI Working paper 02-04
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Torbjörn has organized and/or participated as teacher in several training sessions and workshops with the CAPRI modelling system, a selection of which is:

  • The 3rd DYNASPAT training session in Bonn, November 2005
  • The 1st CAPRI Training Session with the JRC-IPTS in Sevilla, May 2005
  • The 4th Training Session CAP-STRAT Galway, September 2005
  • The 3rd CAP-STRAT Training Session, Chania, Crete, June 2003
  • The 3rd CAP-STRAT Workshop, Bologna, March 2003

Programming Skills:

Skilled: GAMS

Basic knowledge: GEMPACK, XML/XSL/XSLT, R, GAUSS, Delphi, SQL Java, Visual Basic

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Last updated: Friday, November 26, 2010