ARCTIC CLOUD PROPERTIES DERIVED FROM MULTISPECTRAL MODIS AND AVHRR DATA Douglas A. Spangenberg, Patrick Heck Analytical Services & Materials, Inc., Hampton, VA, 23666 USA Patrick Minnis NASA-Langley Research Center, Hampton, VA Qing Trepte, Sunny Sun-Mack SAIC Inc, Hampton, VA Taneil Uttal NOAA/ETL Xiquan Dong University of Utah Abstract for the 11th AMS Conference on Cloud Physics Ogden, Utah 3 - 7 June 2002