Richard R. Forster

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Thermally incised meltwater channels that flow each summer across melt-prone surfaces of the Greenland ice sheet have received little direct study. We use high-resolution WorldView-1/2 satellite mapping and in situ measurements to characterize supraglacial water storage, drainage pattern, and discharge across 6,812 km(2) of southwest Greenland in July 2012,(More)
Improved understanding of Greenland ice sheet hydrology is critically important for assessing its impact on current and future ice sheet dynamics and global sea level rise. This has motivated the collection and integration of in situ observations, model development, and remote sensing efforts to quantify meltwater production, as well as its phase changes,(More)
We developed an automated approach for mapping persistent ice and snow cover (glaciers and perennial snowfields) from Landsat TM and ETM+ data across a variety of topography, glacier types, and climatic conditions at high latitudes (above ~65 ˝ N). Our approach exploits all available Landsat scenes acquired during the late summer (1 August–15 September)(More)
1 Department of Geology and Geophysics, University of Utah, Salt Lake City, UT, United States, 2 Geography Department, University of Utah, Salt Lake City, UT, United States, 3 National Snow and Ice Data Center, University of Colorado Boulder, Boulder, CO, United States, 4 Department of Geology, University of Maryland, College Park, College Park, MD, United(More)
Our poor understanding of tidewater glacier dynamics remains the primary source of uncertainty in sea level rise projections. On the ice sheets, mass lost from tidewater calving exceeds the amount lost from surface melting. In Alaska, the magnitude of calving mass loss remains unconstrained, yet immense calving losses have been observed. With 20% of the(More)
Accelerated contributions of Canada's Baffin and Bylot Island glaciers to sea level rise over the past half century, The Cryosphere, Vol. An algorithm for generalizing topography to grids while preserving subscale morphologic characteristics-creating a glacier bed DEM for Jakobshavn trough as low-resolution input for dynamic ice-sheet models, Comput.