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Lake Ice Regime Classification GeoPackage

Product Summary
Image by Arctic LCC Staff.
Download Full-size Image (91 KB)
Download Link ZIP compressed file - 20 MB
Metadata Link Lake_Ice_Regime Classification_metadata.html - 365 KB
Project Link Fish CAFE: Response of an Arctic Freshwater Ecosystem to Climate and Land-use Change
DescriptionThese data are the result of a geospatial analysis involving multi-year SAR-based lake ice regime classification using sigma-naught backscatter intensity from calibrated space-borne C-band SAR for thousands of lakes in 7 lake districts in Alaska, USA, detailed in Engram et al., (in review). Historically, radar backscatter from space-borne and airborne platforms shows a lower backscatter return from bedfast lake ice and a higher backscatter return from floating ice (where liquid phase water exists under the ice) (Jeffries, Morris, Weeks, & Wakabayashi, 1994; Weeks, 1977). We used a threshold method where the threshold to differentiate floating and bedfast ice regimes was determined for each year from the frequency distribution of SAR backscatter intensity from lake ice.
Date CreatedMarch 14, 2018 5:26 pm
Last UpdatedMarch 14, 2018 5:32 pm