Michael Hess

.	.	new affiliation (since 01. Feb. 1998)
	Meteorologisches Institut der LMU Theresienstr. 37 D-80333 München GERMANY Tel.: -.- Fax: -.- email: m.hess@lrz.uni-muenchen.de	German Remote Sensing Data Center (DFD) DLR Oberpfaffenhofen D - 82234 Weßling GERMANY Tel.: ++49 8153 28 1331 Fax: ++49 8153 28 1363 email: michael.hess@dlr.de

I am (or have been) working on the following topics:

• optical properties of cirrus clouds
• optical properties of ideal hexagonal columnar and platelike ice crystals ( database COP )
• complete 4x4 scattering matrix of ideal and non-ideal hexagonal ice crystals
• sensitivity studies on the influence of hexagonal ice crystals on atmospheric radiation
• groundbased measurements of sky radiances in presence of cirrus
  
  
• optical properties of aerosols
  as a member of the aerosol working group which created the
• Global Aerosol Data Set (GADS)
  including the software package
  OPAC (Optical Properties of Aerosols and Clouds)
  
  
• scattering functions of nonspherical aerosol particles

• Koepke, Peter and Michael Hess (1988): Scattering functions of tropospheric aerosols: the effects of nonspherical particles, Appl. Opt., 27, 2422-2430.

• Hess, Michael and Matthias Wiegner (1993): Modelling cirrus optical properties in: IRS ´92: Current Problems in Atmospheric Radiation (S. Keevallik and O. Kärner, Ed.), A. Deepak Publishing.
  
  
• Hess, Michael and Matthias Wiegner (1994): COP: a data library of optical properties of hexagonal ice crystals, Appl. Opt., 33, 7740-7746.

• Hess, Michael und Matthias Wiegner (1995): Bestimmung der optischen Dicke von Cirren, Annalen der Meteorologie, 31, 243-244.
  
  
• Heß, Michael (1996): Modellierung und Messung optischer Eigenschaften von Cirren, Wiss. Mit. Uni München, 72, 110 pp (phd thesis, in german).

• Koepke, P., M. Hess, I. Schult, and E.P. Shettle (1997): Global Aerosol Data Set, Report No. 243, Max-Planck-Institut für Meteorologie, Hamburg.

• Strauss, B., R. Meerkoetter, B. Wissinger, P. Wendling, and M. Hess (1997): On the regional climatic impact of contrails: microphysical and radiative properties of contrails and natural cirrus clouds, Ann. Geophysicae, 15, 1457-1467.

• Hess, M., P. Koepke, and I. Schult (1998): Optical Properties of Aerosols and Clouds: The software package OPAC, Bull. Am. Met. Soc., 79, 831-844. (PDF file)

• Hess, M., R.B.A. Koelemeijer, and P. Stammes (1998): Scattering matrices of imperfect hexagonal ice crystals, J. Quant. Spectros. Radiat. Transfer, 60, 301-308.

• Knap, W.H., M. Hess, P. Stammes, R.B.A. Koelemeijer, P.D. Watts (1999): Cirrus optical thickness and crystal size retrieval from ATSR-2 data using phase functions of imperfect hexagonal ice crystals, J. Geophys. Res., 104, 31,721-31,730.

• Reichardt, J., M. Hess, A. Macke (2000): Lidar inelastic multiple-scattering parameters of cirrus particle ensembles determined with geometrical-optics crystal phase functions, Appl. Opt., 39, 1895-1910.

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