Differentiation between melt and freeze stages of the melt cycle using SSM/I channel ratios

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Permanent URL	http://hdl.lib.byu.edu/1877/1039
Title	Differentiation between melt and freeze stages of the melt cycle using SSM/I channel ratios
BYU Creator	Long, David G. Ashcraft, Ivan S.
Keywords	Brightness temperature; Greenland; Special Sensor Microwave Imager (SSM/I); freeze/thaw; melt detection;
Description/Abstract	Microwave remote sensing detection of snow melt and ablation generally focuses on the detection of liquid moisture in the snow-pack. For ablation estimation, it is important to determine if wet snow is in the process of melting or freezing. The different stages of the melt cycle are observed in the diurnal variation of Tb measurements from the Special Sensor Microwave Imager (SSM/I) over Greenland. SSM/I channel ratios exhibit patterns indicating that they are sensitive to melt and freeze stages of the daily melt cycle. The horizontal to vertical polarization ratio is sensitive to surface wetness associated with melting. The 19-37-GHz frequency ratio is sensitive to a frozen surface layer over wet snow which is associated with the freeze stage of the melt cycle. These observations are supported by conceptual models presented here and in in situ measurements from other investigators.
Source	Ashcraft, I. S., and D. G. Long. "Differentiation between Melt and Freeze Stages of the Melt Cycle using SSM/I Channel Ratios." Geoscience and Remote Sensing, IEEE Transactions on 43.6 (2005): 1317-23;
Publisher	IEEE
Date Original	2005-06
Language	English eng en
Publication Type	Peer-Reviewed Articles
Type	Text
Format	application/pdf
Owning Institution	Brigham Young University
BYU College	Ira A. Fulton College of Engineering and Technology
BYU Department	Electrical and Computer Engineering
Copyright Status	(c) 2005 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.;
Copyright Use Information	http://www.lib.byu.edu/generic_copyright.html

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Differentiation between melt and freeze stages of the melt cycle using SSM/I channel ratios

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