Simulation Of Daily Flow Data Using A Stochastic Nonparametric Model (K-Nearest Neighbor)

Szafranski , Bill 1 1 University of Colorado, Boulder Daily flow data for the Usk River in Wales was simulated using a nonparametric bootstrap procedure that captures autocorrelation called k-nearest neighbor (k-NN) (Lall and Sharma, 1996). The objective of the modeling approach was to obtain a lengthy and robust daily...

Soil Hydraulic Properties Modeled From Meter To Kilometer Scales Based On In Situ And SMOS Soil Moisture Data

Shellito , Peter J 1 ; Small , Eric E 2 ; Gutmann , Ethan D 3 1 Dept of Geological Sciences, ²ÊÃñ±¦µä 2 Dept of Geological Sciences, ²ÊÃñ±¦µä 3 Research Applications Lab, National Center for Atmospheric Research A primary objective of land surface...

Which Forcing Data Errors Matter Most When Modeling Seasonal Snowpack?

Raleigh , Mark S. 1 ; Lundquist , Jessica D. 2 ; Clark , Martyn P. 3 1 NCAR 2 University of Washington 3 NCAR High quality forcing data are critical when modeling seasonal snowpack and snowmelt, but their quality is often compromised due to measurement errors or deficiencies in...

Photochemical Inactivation Of E. Faecalis In The Presence Of Organic Matter

Mostafa , Simón 1 ; Rubinato , Matteo 2 ; Rosario-Ortiz , Fernando L. 3 ; Linden , Karl G. 4 1 University of Colorado, Boulder 2 University of Colorado, Boulder 3 University of Colorado, Boulder 4 University of Colorado, Boulder Sunlight irradiation is known to contribute to microbial inactivation...

Examination Of Storm Cycles In A Rocky Mountain Subalpine Snowpack Using Δ18O Analysis And Seasonal Snow Pit Data

Jones , Josh 1 ; Hoffman , Cameron 2 ; Barckholtz , Mark 3 ; Beaty , Danielle 4 ; Salazar , Timothy 5 ; Smith , Hannah 6 1 ²ÊÃñ±¦µä 2 ²ÊÃñ±¦µä 3 ²ÊÃñ±¦µä 4 ²ÊÃñ±¦µä 5...

Characterizing The Role And Controls Of Snowmelt In Alpine Groundwater Recharge

Hill , Alice 1 ; Shimabuku , Morgan 2 ; Williams , Mark 3 ; Ge , Shemin 4 1 University of Colorado-Boulder 2 University of Colorado-Boulder 3 Institute for Arctic and Alpine Research 4 University of Colorado-Boulder High altitude mountainous regions are vital source areas of water. Hydrologic processes...

Density-Based Stream Network Extraction From Digital Elevation Models

Ghandehari , Mehran 1 ; Buttenfield , Barbara P. 2 1 Department of Geography, University of Colorado-Boulder, CO, USA 2 Department of Geography, University of Colorado-Boulder, CO, USA Water is a very important natural resource, and it is mandatory that the surface water datasets used for topographic mapping, hydrological modeling,...

Characterization Of Groundwater Storage In The Heihe Headwater Watershed, Qinghai-Tibet Plateau, China

Evans , Sarah 1 ; Ge , Shemin 2 ; Zhou , Min 3 ; Liang , Sihai 4 ; Chen , Jiangwei 5 1 ²ÊÃñ±¦µä 2 ²ÊÃñ±¦µä 3 Peking University 4 China University of Geosciences 5 China University of Geosciences A warming climate...

Evolution Of Dissolved Organic Matter Under A Perennially Ice Covered Lake, Antarctica

Ebert , Jessica 1 ; McKnight , Diane 2 ; Castendyk , Devin 3 1 ²ÊÃñ±¦µä 2 ²ÊÃñ±¦µä 3 SUNY Oneonta DOM is present in all aquatic ecosystems on Earth and plays an important role in the global carbon cycle. DOM is comprised of a complex, heterogeneous mixture...

Early Snowmelt Decreases Ablation Period Carbon Uptake In A High Elevation, Subalpine Forest, Niwot Ridge, Colorado, USA

Winchell , Taylor S 1 ; Molotch , Noah P 2 ; Barnard , David M 3 1 ²ÊÃñ±¦µä The snow ablation period is a time of great potential for carbon uptake in high-elevation, subalpine forests. During this period, water availability associated with snowmelt promotes photosynthetic carbon uptake, while...

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