From ceginfo@u.washington.edu Wed Nov 1 13:14:29 2000 Received: from jason04.u.washington.edu (root@jason04.u.washington.edu [140.142.8.53]) by lists.u.washington.edu (8.9.3+UW00.05/8.9.3+UW99.09) with ESMTP id NAA388490 for ; Wed, 1 Nov 2000 13:14:28 -0800 Received: from homer17.u.washington.edu (ceginfo@homer17.u.washington.edu [140.142.8.17]) by jason04.u.washington.edu (8.9.3+UW00.05/8.9.3+UW00.01) with ESMTP id NAA13924; Wed, 1 Nov 2000 13:14:25 -0800 Received: from localhost (ceginfo@localhost) by homer17.u.washington.edu (8.9.3+UW00.05/8.9.3+UW99.09) with ESMTP id NAA113376; Wed, 1 Nov 2000 13:14:23 -0800 Date: Wed, 1 Nov 2000 13:14:23 -0800 (PST) From: Civil and Environmental Engineering To: cegrads@u.washington.edu, faculty@u.washington.edu Subject: MSE Exam for Ulysses K. Hillard 11/9 (fwd) Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII ROOM CORRECTIION: MORE 230 Marcia Buck Graduate Advising Office Dept. of Civil & Environmental Engineering University of Washington Box 352700 Seattle, WA 98195-2700 (206) 543-2574 email: ceginfo@u.washington.edu ---------- Forwarded message ---------- Date: Wed, 1 Nov 2000 11:42:05 -0800 (PST) From: Civil and Environmental Engineering To: faculty@ce, cegrads@u, hallet@u, robin@rad.geology.washington.edu, ulysses@csua.berkeley.edu Subject: MSE Exam for Ulysses K. Hillard 11/9 ROOM CORRECTION The final examination for the MSE degree for Ulysses K. Hillard will be held on Thursday, November 9, 2000 at 2:30-4:20 p.m. in More 230. "Updating a Macroscale Hydrologic Model with Macrowave Scatterometer Data" Microwave remote sensing from satellite platforms can provide all-weather information about conditions at the land surface that affect surface hydrologic fluxes. Microwave backscatter in particular responds to the liquid moisture content of snow. A drop in backscatter of about 4dB at Ku band (1.7-2.4 cm) has been observed at the onset of snow thaw. Microwave backscatter measured by sensors aboard the NSCAT operational August 1996 to June 1997) and QuikSCAT (operational from July 1999) satellites was examined for its capability to improve predictions of a hydrological model. The Variable Infiltration Capacity model (VIC), a macroscale hydrological model, was configured to run at an 1/8th degree resolution over the upper Mississippi River basin during the winters of 1996/97 and 1999/2000. Backscatter measured by these sensors was compared with estimates of snow cover inferred from in situ climatic observations, and with VIC model predictions. The comparisons indicate a weak relationship between the observed and modeled snow surface variables (snow extent, and freeze-thaw status) and NSCAT and QuikSCAT backscatter. Tests were performed to indicate whether updating the model snow surface freeze/thaw state with backscatter would improve streamflow predictions. The results showed that the updating process had little effect on model accuracy. Room Confirmation #26294 Professor Dennis P. Lettenmaier, Chair Professor Bernard Hallet Professor Robin Weeks Marcia Buck Graduate Advising Office Dept. of Civil & Environmental Engineering University of Washington Seattle, WA 98195-2700 (206) 543-2574 email: ceginfo@u.washington.edu .