Glacier modeling in support of field observations of mass balance at South Cascade Glacier, Washington, USA
Monograph
By: Edward G. Josberger and William R. Bidlake
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Abstract
The long-term USGS measurement and reporting of mass balance at South Cascade Glacier was assisted in balance years 2006 and 2007 by a new mass balance model. The model incorporates a temperature-index melt computation and accumulation is modeled from glacier air temperature and gaged precipitation at a remote site. Mass balance modeling was used with glaciological measurements to estimate dates and magnitudes of critical mass balance phenomena. In support of the modeling, a detailed analysis was made of the "glacier cooling effect" that reduces summer air temperature near the ice surface as compared to that predicted on the basis of a spatially uniform temperature lapse rate. The analysis was based on several years of data from measurements of near-surface air temperature on the glacier. The 2006 and 2007 winter balances of South Cascade Glacier, computed with this new, model-augmented methodology, were 2.61 and 3.41 mWE, respectively. The 2006 and 2007 summer balances were -4.20 and -3.63 mWE, respectively, and the 2006 and 2007 net balances were -1.59 and -0.22 mWE. PDF version of a presentation on the mass balance of South Cascade Glacier in Washington state. Presented at the American Geophysical Union Fall Meeting 2010.
| Publication type | Report |
|---|---|
| Publication Subtype | USGS Unnumbered Series |
| Title | Glacier modeling in support of field observations of mass balance at South Cascade Glacier, Washington, USA |
| Series title | Monograph |
| DOI | 10.3133/70039772 |
| Year Published | 2010 |
| Language | English |
| Publisher | U.S. Geological Survey |
| Publisher location | Reston, VA |
| Contributing office(s) | Washington Water Science Center |
| Description | 1 Sheet: 48 x 36 inches |
| Country | United States |
| State | Washington |
| Other Geospatial | South Cascade Glacier |
| Online Only (Y/N) | Y |
| Additional Online Files (Y/N) | N |
| Google Analytic Metrics | Metrics page |