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RAMI 2 phase

2002 - 2004

  1. February 2002 - June 2002
    Active submission period
  2. October 2004
    On-line results publication
  3. March 2004

The second phase of the RAMI initiative is now closed.

RAMI 2 was constructed around two components.
The first being a repetition of all test cases in direct mode that were already part of RAMI 1, offering the possibility to re-evaluate models that have been upgraded since, as well as to accomodate newcomers.

The second component of RAMI 2 was designed to test the performance of three-dimensional models in significantly heterogeneous environments. The design of this latter series of experiments followed the conclusions and recommendations of RAMI 1.


RAdiation transfer Model Intercomparison (RAMI) exercise: Results from the second phase
Pinty, B., J-L. Widlowski, M. Taberner, N. Gobron, M. M. Verstraete, M. Disney, F. Gascon, J.-P. Gastellu, L. Jiang, A. Kuusk, P. Lewis, X. Li, W. Ni-Meister, T. Nilson, P. North, W. Qin, L. Su, S. Tang, R. Thompson, W. Verhoef, H. Wang, J. Wang, G. Yan, and H. Zang, RAdiation transfer Model Intercomparison (RAMI) exercise: Results from the second phase (2004), Journal of Geophysical Research, 109, D06210, 19, DOI: 10.1029/2003JD004252.
Journal of Geophysical Research: Atmospheres

Scenes and Measurements

Information regarding the structural and spectral properties of the proposed testcases, the nature of the various measurements that had to be performed, and the many results statistics and RT model simulations of this phase can be viewed here:

Models and References

Information on the participating RT models of the second phase of the RAMI initiative can be found through the 'Models and References' link:

Models and References

The following page provides access to both the various test cases defined for RAMI 2 phase.


The long term effort implied by the organization of such an intercomparison campaign can only be sustained through team work. The overall scientific leadership for this second RAMI exercise was provided by Bernard Pinty, with the active participation of Jean-Luc Widlowski, who created the images and provided the detailed specifications of the protocols for the new heterogeneous experiments.
Phase 2 was initially also hosted on the ENAMORS web site maintained by Michel Verstraete. Malcolm Taberner designed and ran the computer codes necessary to analyze the results and generate the graphical output provided here.