HR: 0830h
AN: C41B-0955 INVITED     [PDF]
TI: Soil Heat and Water (SHAW) Model Validation During Snowmelt in a Forested and Regenerating Clearcut on a Colorado Subalpine Hillslope
AU: * Goodbody, A
EM: goodbody@lamar.colostate.edu
AF: Department of Forest, Rangeland, and Watershed Stewardship, College of Natural Resources, Colorado State University, 235 North Grant Avenue, Fort Collins, CO 80521 United States
AU: Elder, K
EM: kelder@fs.fed.us
AF: Rocky Mountain Research Station, USDA Forest Service 240 West Prospect Road, Fort Collins, CO 80526 United States
AU: Davis, R E
EM: bert@crrel.usace.army.mil
AF: Cold Regions Research and Engineering Laboratory, 72 Lyme Road, Hanover, NH 03755 United States
AB: Perturbations to Central Rocky Mountain subalpine forests can significantly impact hydrological processes. Understanding interactions between subalpine forest and surface/subsurface hydrology at the process level is essential for the development and validation of hydrologic models. Measurements from two subalpine hillslopes are used to validate the Soil Heat and Water (SHAW) model. One hillslope is a naturally regenerating clearcut that was harvested in December 1984. Adjacently lies a second hillslope, which serves as the control and is forested with trees exceeding 80 years in age. Both plots are populated with lodgepole pine (Pinus contorta), subalpine fir (Abies lariocarpa) and Englemann spruce (Picea englemannii). Identical meteorological and hydrological measurements were made on both plots from January through June 2001. Meteorologic measurements include air temperature, relative humidity, incoming solar radiation, net radiation, wind speed and direction, soil temperature, and snow depth. Hydrologic measurements include snow water equivalent, soil moisture, snowmelt discharge at the base of the snowpack, and subsurface plot discharge. Precipitation was measured offsite in a nearby forest clearing. In addition to parameterizing the model, these measurements serve as critical validation points for model output. The model produced adequate results in both forest conditions.
DE: 1860 Runoff and streamflow
DE: 1863 Snow and ice (1827)
SC: Cryosphere [C]
MN: 2003 Fall Meeting