Characterization of a hoar-development episode using SSM/I brightness temperatures in the vicinity of the GISP2 site, Greenland

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Abstract

Formation of a surface-hoar/depth-hoar complex at the GISP2 site in central Greenland was correlated with large changes in Special Sensor Microwave/Imager (SSM/I) brightness-temperature data. Pass-averaged SSM/I brightness-temperature data over a 1/2° latitude by 1° longitude cell for the 19 and 37 GHz, vertically (V) and horizontally (H) polarized bands were manipulated to yield differential (V-H) trends which clearly show a gradual decline as the hoar formation caused a progressively rougher surface with progressively lower density. Consistent expression of trends in microwave brightness temperature over 35 adjacent study cells indicates that this technique may provide a remote-sensing signature capable of defining the timing and spatial extent of surface- and depth-hoar formation in central Greenland. -from Authors

Original languageEnglish (US)
Pages (from-to)183-188
Number of pages6
JournalAnnals of Glaciology
Volume17
StatePublished - Jan 1 1993

All Science Journal Classification (ASJC) codes

  • Earth-Surface Processes

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