A midlatitude cirrus cloud climatology from the Facility for Atmospheric Remote Sensing. Part III : Radiative properties

In Part III of a series of papers describing the extnedted time high-cloud observations from the University of Utah Facility for Atmosphic Remote Sensing (FARS) supporting the First International Satellite Cloud Climatology Project (ISCCP) Regional Experiement, the visible and infrared radiative properties of cirrus cloud over Salt Lake City, Utah, are examined. Using --860 h of combined ruby (o.694 mum) lilar and midinfrared (9.5-11.5 mum) radiometer data collected between 1992 and 1999 from visually identified cirrus clouds, the visible optical depths tau and infrared layer emittance epsilon of the varieties of midlatitude cirrus are characterized.