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CUAHSI Conference Presentations

Dr. Naomi Tague and PhD students Kyongho Son and Xiaoli Chen attended the CUAHSI Fourth Biennial Colloquium on Hydrologic Science and Engineering – “Water Across the Critical Zone: Scaling from Local to Global Hydrology” – July 28-30, 2014, at the National Conservation Training Center in Shepherdstown, WV.

Kyongho Son presented “Effect of soil parameter uncertainty on assessing climate change projection in two small Sierra Nevada watersheds”, covering the key points: 1) Model estimates for a transient snow watershed has higher predictive uncertainty for streamflow, evapotranspiration and net primary productivity than those for a snow-dominated watershed; 2) The effect of soil parameter uncertainty is larger in the drier years and summer; and 3) Accounting for soil parameter uncertainty in modeling for climate impact analysis is necessary.
Kyongho Son’s Poster

Xiaoli Chen presented “Modeling Nitrate Exporting Patterns during Storm Events for a Semi-arid Mountain Watershed”, explaining how we downscale a daily version of the RHESSys model to an hourly version, and how we implement ”fill and spill” in RHESSys.
Xiaoli Chen’s poster

Conference Presentation

PhD student Kyongho Son presented “Strategic soil moisture and sapflux sampling design for improving ecohydrologic predictions in Sierra Critical Zone Observatory watersheds” at the Global Fair and Workshop on Long-Term Observing Systems of Mountain Social-Ecological Systems, held at the University of Nevada, Reno, USA the week of July 16-19, 2014.
Mountain Observatories: A Global Fair and Workshop

Conference Presentation

Dr. Tague recently presented “Modelling interactions among vegetation structure, function and sensitivity to climate variability and change in mountain watersheds” at the Computational Methods in Water Resources International Conference, held at the University of Stuttgart, Germany. Naomi’s presentation was part of the computational ecohydrology session, which focused on issues related to enhancing our knowledge of biotic-abiotic process coupling and their scaling properties, the development of innovative numerical methods describing these interactions, and the further evolution of fully-coupled landscape models that capture the role of biota in the dynamics of hydrological and hydrodynamic processes.
Conference website

BioEarth Meeting

Naomi Tague and Elizabeth Garcia are attending the BioEarth Stakeholder meeting at the University of Washington in Pullman, Washington, this week. RHESSys is one of the models integrated into the BioEarth framework with the goal of creating a regional modeling framework for the Pacific Northwest to improve understanding of the interactions among carbon, nitrogen, and water at the regional scale in the context of global change, to inform decision makers’ strategies regarding natural and agricultural resource management.

For more information, please visit the BioEarth site

BioEarth

Watershed Science Masterclass

Naomi Tague was part of a team with Jeff McDonnell (University of Saskatchewan), Peter Troch (University of Arizona), and Richard Hooper (executive directory of CUAHSU), who taught this week-long course focusing on hydrologic and biogeochemical watershed processes, including theory, experimental design, and modeling.

Dr. Tague taught about cutting edge concepts in hydrologic modeling, including innovative ways of linking new measurements (isotopes, remote sensing) with models, ways of accounting for uncertainty in models – and computer science based tools that support community model development.

The course was held at Biosphere2, which includes the Landscape Evolution Observatory (LEO) where three huge model hillslopes are constructed inside an environmentally controlled greenhouse facility. Students had the opportunity to run an experiment with LEO, including doing some cool experiments (adding rain and really tracking how the water moves) and analyzing data collected from hillsope experiments.

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For more photos, see the album on our facebook page
Biosphere2
Landscape Evolution Observatory
CUAHSI

RHESSys Hackathon!

A collaborative effort including software engineers, scientists, and researchers to improve RHESSys functionality and usability. Participants in the hackathon included researchers from RENCI (Renaissance Computing Institute), the Institute for the Environment at UNC Chapel Hill, WSSI collaborators from the National Socio-Environmental Synthesis Center (SESYNC) at the University of Maryland and the National Center for Supercomputing Applications (NCSA) at the University of Illinois at Urbana-Champaign, and of course the chief RHESSys architect Dr. Naomi Tague.photo (1)

Japan-US Watershed Hydrology and Forest Biogeochemistry: Comparing Data, Theory and Models

Japan-US Watershed Hydrology and Forest Biogeochemistry

Tague contributes to this international working group – looking at how RHESSys might be useful for synthesizing spatial dense measurements of forest thinning effects on nitrogen cycling and water – and thinking about how emerging isotopic data from streams and groundwater wells can be used to improve RHESSys representation of subsurface flowpaths