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Minutes of phoneconference about Task 3, 16 Jan 2009


  • Marc Bouvet (MB), ESA
  • Claudia Emde (CE), DLR
  • Bernhard Mayer (BM), DLR
  • Ulrich Hamann (UH), DLR
  • Arve Kylling (AK), St. Olavs Hospital


  1. Discussion of WP3


Discussion of Task 3 report
  1. Raman scattering - WP3100, status: ongoing
    The code is partly implemented, albedo is not implemented jet, results will be compared to literature.
  2. Polarization in MYSTIC - WP3200, status: ongoing
    Polarisation for solar range implemented in MYSTIC. CE presented comparisons with polradtran. Some progress has made for calculation of optical properties of aspherical particles. If suitable tools are availeble, they will be added to the software package.
  3. Extension of surface properties - WP3300, status ongoing
    The code of Mishenko, which simulates polarised BRDFs, is suitable for implementation in libRadtran.
  4. Representation of aerosols – WP3400, status: closed
    Optical properties of OPAC aerosols were precalculated. Different kind of aerosols can be mixed during the libRadtran simulation.
  5. Development of graphical tools - WP3510, status onging
    Some preparing work was done, including data_files_path environment variable, syntax checking of the input. A demonstration version will be presented next meeting.
  6. Include I/O-functions for netcdf data format - WP3520, status closed
    Several input and output options are implemented. UH presents some results at the midtime meeting.
  7. Fix DISORT instability - WP3540, status ongoing
    An instability caused by the intensity correction is under investigation.
  8. Cleaning/restructuring of code - WP3550, status ongoing
    The consistent treatment of ice cloud optical properties was implemented.
  9. Miscellaneous
    For line-by-line simulations, a python interphase was developed. This needs more testing in the UV/VIS.
    The webpage of libRadtran was redesigned. Now it offers a user area and a basic usage instruction additionally. MB suggests to add a user forum as well.

A demonstration version of libRadtran will be installed by MB with telephone assistance.

The ESASLight website has been approved by MB as a useful tool.

Progress Meeting 4

The midtime review meeting will take place at the 1st of April at ESTEC. This meeting will be used to inform people from ESA about ESAs light. There will be a 30 min presentation of the whole project, its objectives and the recent developments, and another presentation of 15-30 min about the applications of libRadtran.

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