Assistant Researcher, Sierra Nevada Research Institute, UC Merced
UC Merced - University of California, Merced
PhD, Engineering-Mechanics, Montana State University, 2005
I conduct applied research in various aspects of cold regions hydrology, ranging from permafrost thaw impacts on surface water to spatial variability in snow accumulation and melt. As a numerical modeler, I am especially interested in filling in gaps in understanding of physical processes through an integration of numerical models, geospatial data, and field observation. At the Sierra Nevada Research Institute, University of California Merced, I am currently studying potential future changes in runoff (timing and quantity) from rain-snow transition zones of alpine watersheds with climate and land use change.
CZO Research Groups
Water residence time (age) and flow path exert synchronous effects on annual characteristics of dissolved organic carbon in terrestrial runoff. JEPSEN, S.M., T.C. HARMON, S. SADRO, B. REID, S. CHANDRA (2019): Science of the Total Environment
Hydrogeologic influence on changes in snowmelt runoff with climate warming: Numerical experiments on a mid-elevation catchment in the Sierra Nevada, USA. Jepsen, S. M.; Harmon, T. C.; Meadows, M. W.; Hunsaker, C. T. (2016): Hydrology 533, 332-342. DOI 10.1016/j.jhydrol.2015.12.010
Watershed model calibration to the base flow recession curve with and without evapotranspiration effects. Jepsen, s., Harmon, T., Shi, Y. (2016): Hydrology 52, 2919-2933. DOI 10.1002/2015WR017827.
Relationships between stream nitrate concentration and spatially distributed snowmelt in high-elevation catchments of the western US. Perrot, D., N. P. Molotch, M. W. Williams, S. M. Jepsen, and J. O. Sickman (2014): Water Resour. Res., 50, 8694–8713
Interannual variability of snowmelt in the Sierra Nevada and Rocky Mountains, USA: Examples from two alpine watersheds. Jepsen, S.M., N. P. Molotch, M.W. Williams, K.E. Rittger, J.O. Sickman (2012): Water Resources Research 48 (2) Cross-CZO
Papers and books that explicitly acknowledge a CZO grant are highlighted in PALE ORANGE.
Hydrogeologic Influence on Changes in Snowmelt Runoff with Climate Warming: Numerical Experiments on a Mid-Elevation Catchment in the Sierra Nevada, USA. Jepsen, S., Harmon T., Meadows, M., Hunsaker, C. (2015): H52C Modeling the Critical Zone: Integrating Processes and Data across Disciplines and Scales I, presented at 2015 Fall Meeting, AGU, San Francisco, CA, 14-18 Dec.
The Role of Dynamic Storage in the Response to Snowmelt Conditions in the Southwestern United States: Flux Hysteresis at the Catchment Scale. Driscoll J., Meixner T., Ferré T., Williams M., Sickman J., Molotch N., Jepsen S. (2014): Abstract H51O-0825 presented at 2014 Fall Meeting, AGU, San Francisco, CA, 15-19 Dec. Cross-CZO