Roger C. Bales
Director of the Sierra Nevada Research Institute; University of California, Merced
SNRI - Sierra Nevada Research Institute
Bales's SNRI page
Professor; School of Engineering, University of California, Merced
UC Merced - University of California, Merced
Bales's UC Merced page
Ph.D., California Institute of Technology, 1985
Mountain hydrology and biogeochemistry, polar snow and ice, climate impacts and water resources
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CZO Publications
Papers/Books
2019 (In Review)
Evapotranspiration feedbacks shift annual precipitation-runoff relationships during multi-year droughts in a Mediterranean mixed rain-snow climate. Avanzi, F.; Rungee, J.; Maurer, T.; Bales, R.; Ma, Q.; Glaser, S.; Conklin, M. (2019): Hydrology & Earth System Sciences Discuss.
2019
California forest die-off linked to multi-year deep soil drying in 2012–2015 drought. GOULDEN, M.L. & R.C. BALES (2019): Nature Geoscience, 12
2018
Mechanisms controlling the impact of multi-year drought on mountain hydrology. Bales, R. C.; Goulden, M. L.; Hunsaker, C. T.; Conklin, M. H.; Hartsough, P. C.; O'Geen, A. T.; Hopmans, J. W.; Safeeq, M. (2018): Hydrological Processes: 10.1038/s41598-017-19007-0
2018
Spatially distributed water-balance and meteorological data from the rain-snow transition, southern Sierra Nevada, California. BALES, R., STACY, E., SAFEEQ, M., MENG, X., MEADOWS, M., OROZA, C., CONKLIN, M., GLASER, S., and WAGENBRENNER, J. (2018): Earth System Science Data, 10
2018
Spatially distributed water-balance and meteorological data from the Wolverton catchment, Sequoia National Park, California. BALES, R.C., STACY, E.M., MENG, X., CONKLIN, M.H., KIRCHNER, P.B., and ZHENG, Z (2018): Earth System Science Data, 10
2018
Subsurface plant-accessible water in mountain ecosystems with a Mediterranean climate. Klos, P. Z.; Goulden, M.; Riebe, C. S.; Tague, C.; O’geen, A. T.; Flinchum, B. A.; Safeeq, M.; Conklin, M. H.; Hart, S. C.; Berhe, A. A.; Hartsough, P. C.; Holbrook, S.; Bales R. C.; (2018): Hydrological Processes: 10.1002/wat2.1277
2018
Southern Sierra Critical Zone Observatory and Kings River Experimental Watersheds: A Synthesis of Measurements, New Insights, and Future Directions. O'Geen, A.; Safeeq, M.; Wagenbrenner, J.; Stacy, E.; Hartsough, P.; Devine, S.; Tian, Z.; Ferrell, R.; Hopmans, J.W.; and Bales, R. (2018): Vadose Zone Journal, 17:180081
2017
Designing a network of critical zone observatories to explore the living skin of the terrestrial Earth. Brantley, S.L., McDowell, W.H., Dietrich, W.E., White, T.S., Kumar, P., Anderson, S., Chorover, J., Lohse, K.A., Bales, R.C., Richter, D., Grant, G., and Gaillardet, J. (2017): Earth Surface Dynamics, 5, 841–860 Cross-CZO National
2017
Technical report: The design and evaluation of a basin-scale wireless sensor network for mountain hydrology. Zhang, Z.; Glaser, S.D.; Bales, R.C.; Conklin, M.; Rice, R.; Marks, D.G. (2017): Water Resources Research.
2016
Optimizing embedded sensor network design for catchment scale snowdepth estimation using LiDAR and machine learning. Oroza, C.A., Zheng, Z., Glaser, S.D., Tuia, D., Bales, R.C. (2016): Water Resources Research. 52 (10), 8174.
2016
Topographic and vegetation effects on snow accumulation in the southern Sierra Nevada: a statistical summary from lidar data. Zheng, Z., Kirchner, P. B., and Bales, R. C. (2016): The Cryosphere. 10 (1),
2015
Soil moisture response to snowmelt timing in mixed-conifer subalpine forests. Harpold A. A., Molotch N. P., Musselman K. N., Bales R. C., Kirchner P. B., Litvak M. and Brooks P. D. (2015): Hydrological Processes 29(12): 2782–2798 Cross-CZO
2015
Chapter 2 – The Role of Critical Zone Observatories in Critical Zone Science. White T., Brantley S., Banwart S., Chorover J., Dietrich W., Derry L., Lohse K., Anderson S., Aufdendkampe A., Bales R., Kumar P., Richter D., McDowell B. (2015): Developments in Earth Surface Processes 19: 15–78 Cross-CZO National
2014
Estimated Loss of Snowpack Storage in the Eastern Sierra Nevada with Climate Warming. Bales, R., Rice, R., Roy, S. (2014): J. Water Resour. Plann. Manage.
2014
Mountain runoff vulnerability to increased evapotranspiration with vegetation expansion. Goulden, M.L., Bales, R.C. (2014): Proceedings of the National Academy of Sciences. 111 (39)
2014
LiDAR-derived snowpack data sets from mixed conifer forests across the Western United States. Harpold, A.A., Q. Guo, N. Molotch, P. D. Brooks, R. Bales, J.C. Fernandez-Diaz, K.N. Musselman, and T.L. Swetnam, P. Kirchner, M. Meadows, J. Flanagan, R. Lucas (2014): Water Resources Research 50(3): 2749-2755 Cross-CZO
2014
LiDAR measurement of seasonal snow accumulation along an elevation gradient in the southern Sierra Nevada, California. Kirchner, P.B., Bales, R.C., Molotch, N.P., Flanagan, J., Guo, Q (2014): Hydrology and Earth System Sciences 18: 4261-4275 Cross-CZO
2013
Sensor placement strategies for SWE estimation in the American River basin. Welch, S., Kerkez, B., Bales, R., Glaser, S., Rittger, Rice, R. (2013): Water Resources Research, 49 (2)
2012
Evapotranspiration along an elevation gradient in the Sierra Nevada . Goulden, M.L., Anderson, R.G., Bales, R.C., Kelly, A.E., Meadows, M., and Winston, G.C. (2012): Journal of Geophysical Research 117 (G3).
2012
Response to Comment on Soil moisture response to snowmelt and rainfall in a Sierra Nevada mixed-conifer forest. Hopmans, J.W., R.C. Bales, A.T. O'Geen, C.T. Hunsaker, D. Beaudette, P.C. Hartsough, A. Malazian, P. Kirchner, and Meadows, M. (2012): Vadose Zone Journal. 11
2012
Snowmelt Runoff and Water Yield Along Elevation and Temperature Gradients in Californias Southern Sierra Nevada . Hunsaker, C.T., Whitaker, T.W., and Bales, R.C. (2012): Journal of the American Water Resources Association, 2012. 1-12: p. 667-678.
2012
Design and Performance of a Wireless Sensor Network for Catchment-scale Snow and Soil Moisture Measurements. Kerkez, B., Glaser, S.D., Bales, R.C., and Meadows, M.W. (2012): Water Resources Research, 48 (9), W09515
2012
Controls of streamflow generation in small catchments across the snow-rain transition in the Southern Sierra Nevada, California . Liu, F., Hunsaker, C.T., and Bales, R.C. (2012): Hydrological Processes. 27 1959.
2012
Controls of streamflow pathways in small catchments across the snow-rain transition in the Southern Sierra, California. Lui, F., Hunsaker, C.T., Bales, R.B. (2012): Hydrological Processes
2012
Influence of canopy structure and direct beam solar irradiance on snowmelt rates in a mixed conifer forest. Musselman, K.N., Molotch, N.P., Margulis, S.A., Kirchner, P.B., and Bales, R.C. (2012): Agricultural and Forest Meteorology 161: 46-56.
2012
Elevation-dependent influence of snow accumulation on forest greening. Trujillo, E., Molotch, N.P., Goulden, M.L., Kelly, A.E., Bales, R.C. (2012): Nature Geoscience 5, 705-709
2011
Soil Moisture Response to Snowmelt and Rainfall in a Sierra Nevada Mixed-Conifer Forest. Bales, R.C., Hopmans, J., O'Geen, A.T., Meadows, M., Hartsough, P.C., Kirchner, P., Hunsaker, C.T., Beaudette, D. (2011): Vadose Zone J., 10:786-799.
2008
Critical Zone Observatories: Building a network to advance interdisciplinary study of Earth surface processes. Anderson, S.P., Bales, R.C., and Duffy, C.J. (2008): Mineralogical Magazine 72(1): 7-10. Cross-CZO National
2008
Sampling Strategies in forest hydrology and biogeochemistry. Bales, R.C., Conklin, M.H., Krekez, B., Glaser, S.D., Hopmans, J. W., Hunsaker, C.T., Meadows, M.W. (2008): Forest Hydrology and Biogeochemistry. Ecological Studies, Volume 216, Part 2, 29-44.
Papers and books that explicitly acknowledge a CZO grant are highlighted in PALE ORANGE.
Other CZO Publications
2019
Southern Sierra Critical Zone Observatory: 2018-2019 Annual Report to National Science Foundation. Bales, R.; Conklin, M.; Goulden, M.; Riebe, C.; Tague, C. (2019): NSF Award #1331939
2018
Southern Sierra Critical Zone Observatory: 2017-2018 Annual Report to National Science Foundation. Bales, R.; Tague, C.; Goulden, M.; Riebe, C.; Conklin, M. (2018): NSF Award #1331939
2017
Making up for lost snow: lessons from a warming Sierra Nevada . Bales, R. (2017): Fall Meeting, American Geophysical Union, December 2017. Abstract C21H-04.
2017
Southern Sierra Critical Zone Observatory: 2016-2017 Annual Report to National Science Foundation. Bales, R. (2017): NSF Award #1331939
2017
Developing decision-relevant data and information systems for California water through listening and collaboration. Bales, R. C.; Bernacchi, L.; Conklin, M. H.; Viers, J. H.; Fogg, G. E.; Fisher, A.T.; Kiparky, M. (2017): Fall Meeting, American Geophysical Union, December 2017. Abstract PA33D-10.
2017
A Gap-Filling Procedure for Hydrologic Data Based on Kalman Filtering and Expectation Maximization: Application to Data from the Wireless Sensor Networks of the Sierra Nevada. Coogan, A.; Avanzi, R.; Conklin, M.H.; Bales, R.C.; Glaser, S. (2017): Fall Meeting, American Geophysical Union, December 2017. Abstract IN51E-0054
2017
Estimating evapotranspiration change due to forest treatment and fire at the basin scale in the Sierra Nevada, California. Goulden, M.; Bales, R. (2017): Fall Meeting, American Geophysical Union, December 2017. Abstract H21B-1443.
2017
Predicting Plant-Accessible Water in the Critical Zone: Mountain Ecosystems in a Mediterranean Climate. Klos, P. Z.; Goulden, M.; Riebe, C. S.; Tague, C.; O’geen, A. T.; Flinchum, B. A.; Safeeq, M.; Conklin, M. H.; Hart, S. C.; Berhe, A. A.; Hartsough, P. C.; Holbrook, S.; Bales R. C.; (2017): Fall Meeting, American Geophysical Union, December 2017. Abstract H23H-1769.
2017
Using wireless sensor networks to improve understanding of rain-on-snow events across the Sierra Nevada. Maurer, A.; Avanzi, F.; Oroza, C.; Malek, S.; Glaser, S.; Bales, R.; Conklin, M. (2017): Fall Meeting, American Geophysical Union, December 2017. Abstract C53B-1025.
2017
Spatial Variability of Soil-Water Storage in the Southern Sierra Critical Zone Observatory: Measurement and Prediction. Oroza, C.; Bales, R. C.; Zheng, Z.; Glaser, S. D. (2017): Fall Meeting, American Geophysical Union, December 2017. Abstract H41G-1539.
2017
Evapotranspiration response to multi-year dry periods in the semi-arid western United States. Rungee, J. P.; Bales, R. (2017): Fall Meeting, American Geophysical Union, December 2017. Abstract H11O-07.
2017
Relative resiliency of Giant Sequoia groves to multi-year dry periods in a warming climate. Su, Y., Bales, R., Ma, Q., Nydick, K., Ray, R., Li, W., Guo, Q. (2017): 2017 AAG Annual Meeting
2016
Observations From Drought in the Southern Sierra. Bales, R. (2016): Yosemite Hydroclimate Meeting
2016
Southern Sierra Critical Zone Observatory: 2015-2016 Annual Report to National Science Foundation. Bales, R. (2016): NSF Award #1331939
2016
Integrating Fire Effects into an Ecohydrologic Model for Simulating Fire Regimes. Bart, R.R.; Tague, C.; Kennedy, M.C.; Mckenzie, D. (2016): Fall Meeting, American Geophysical Union, December 2016. Abstract GC51E-1234.
2016
Widespread tree mortality with the ongoing California drought: the roll of water balance and temperature . Goulden, M.; Bales, R.C. (2016): Fall Meeting, American Geophysical Union, December 2016. Abstract GC32C-05.
2016
Catchment-scale snow depth monitoring with balloon photogrammetry. Li, D.; Wigmore, O.; Vanderjagt, B.J.; Durand, M.T.; Molotch, N.P.; Bales, R.C. (2016): Fall Meeting, American Geophysical Union, December 2016. Abstract C51C-0669.
2016
Concentration-Discharge Relationship and Endmember Mixing in the Intermediate and Large Watersheds of the US West. Liu, F.; Miller, M.P.; Williams, M.W.; Conklin, M.H.; Yang, J.; Bales, R.C. (2016): Fall Meeting, American Geophysical Union, December 2016. Abstract H52E-06.
2016
Concentration-Discharge Relationship and Endmember Mixing in the Intermediate and Large Watersheds of the US West. Liu, F.; Miller, M.P.; Williams, M.W.; Conklin, M.H.; Yang, J.; Bales, R.C. (2016): Fall Meeting, American Geophysical Union, December 2016. Abstract H52E-06.
2016
Optimizing placements of ground-based snow sensors for areal snow cover estimation using a machine-learning algorithm and melt-season snow-LiDAR data. Oroza, C.; Zheng, Z.; Glaser, S.D.; Bales, R.C.; Conklin, M.H. (2016): Fall Meeting, American Geophysical Union, December 2016. Abstract C44A-08.
2016
Sensitivities of dry season runoff to precipitation and temperature in southern Sierra Nevada streams. Safeeq, M.; Hunsaker, C.T.; Bales, R.C. (2016): Fall Meeting, American Geophysical Union, December 2016. Abstract H44B-03.
2015
Water and Sierra Nevada forests. Bales, R (2015): The State Bar of California Environmental Law Conference at Yosemite. Fish Camp, CA
2015
Southern Sierra Critical Zone Observatory: 2014-2015 Annual Report to National Science Foundation. Bales, R. (2015): NSF Award 1331939
2015
Drought effects on evapotransiration and subsurface water storage in the southern Sierra Nevada. Bales, R., Goulden, M., Hunsaker, C., Conklin, M., Hartsough, P., O’Geen, A., Hopmans, J., Safeeq, M. (2015): H33M. The Hydrology-Vegetation-Climate Nexus: Identifying Process Interactions and Environmental Shifts in Mountain Catchments II, presented at 2015 Fall Meeting, AGU, San Francisco, CA, 14-18 Dec.
2015
Sensitivity of Hydrologic Partitioning to Snowpack Dynamics . Barnhart, T.B., Molotch, N.P., Livneh, B., Harpold, A.A., Knowles, J.F., Anderson, S.P., Bales, R.C., and Hunsaker, C.T. (2015): Poster, presented at the Western Snow Conference, Grass Valley, CA, April 20-23. Cross-CZO
2015
Common Critical Zone Observatory (CZO) Infrastructure and Measurements. J. Chorover, S. Anderson, A. K. Aufdenkampe, R. C. Bales, S. L. Brantley, W. Dietrich, P. Kumar, K. A. Lohse, W. McDowell, D. Richter, T. White (2015): A Guide Prepared By CZO PIs, May 05, 2015 Cross-CZO National
2015
In-situ monitoring of California’s drought: Impacts on key hydrologic variables in the Southern Sierra Nevada. Oroza, C., Zheng, Z., Zhang, Z., Glaser, S., Bales, R., Conklin, M. (2015): EP53A Earth and Planetary Surface Processes: General Contribution Posters, presented at 2015 Fall Meeting, AGU, San Francisco, CA, 14-18 Dec.
2015
Optimization methods for multi-scale sampling of soil moisture and snow in the Southern Sierra Nevada . Oroza, C., Zheng, Z., Zhang, Z., Glaser, S., Bales, R., Conklin, M. (2015): H42B Hot Spots and Hot Moments at System Interfaces: Novel Sensors and Modeling Approaches for Transforming Understanding of Catchment Heterogeneity I, presented at 2015 Fall Meeting, AGU, San Francisco, CA, 14-18 Dec.
2014
Southern Sierra Critical Zone Observatory: 2013-2014 Annual Report to National Science Foundation. Bales, R. (2014): NSF Award 1331939
2014
Optimization of Sensor Placements Using Machine Learning and LIDAR data: a Case Study for a Snow Monitoring Network in the Sierra Nevada. Oroza, C, Zheng, Z, Glaser S, Bales, R (2014): American Geophysical Union, Fall Meeting 2014, abstract #C43D-0412
2013
The strength of strategically placed in situ networks: The Critical Zone Observatory Program (Invited). Bales R.C., Brooks P.D., Molotch N.P. (2013): Abstract H53L-02 presented at 2013 Fall Meeting, AGU, San Francisco, CA, 9-13 Dec. Cross-CZO
2013
Southern Sierra Critical Zone Observatory: 2007-2013 Final Report to National Science Foundation. Bales, R. (2013): NSF Award 0725097
2013
Southern Sierra Critical Zone Observatory: 2012-2013 Annual Report to National Science Foundation. Bales, R. (2013): NSF Award 1239521
2013
Critical Zone Science and Observatories. Brantley, S.L., White, T.S., Anderson, S.P., Bales, R.C., Chorover, J., McDowell, W.H. (2013): Abstract TH15D-01 presented at 2013 Fall Meeting, AGU, San Francisco, CA, 9-13 Dec. Cross-CZO National
2013
Estimating forest snow accumulation with LiDAR derived canopy metrics, southern Sierra Nevada, California . Kirchner, P., R.C. Bales, and T.H. Painter (2013): American Geophysical Union, Fall Meeting 2013, abstract #H13J-1507
2013
Timber harvest effect on soil moisture in the southern Sierra Nevada: Is there a measurable impact?. Meadows, M.W., R.C. Bales, M.H. Conklin, M. Goulden, P.C. Hartsough, J.W. Hopmans, C.T. Hunsaker, R.G. Lucas and A.I. Malazian (2013): American Geophysical Union, Fall Meeting 2013, abstract #H11B-1165
2013
Impacts of forest thinning and climate change on transpiration and runoff rates in Sierra Nevada mixed-conifer headwater catchments . Saksa, P.C., R.L. Ray, R.C. Bales, and M.H. Conklin. (2013): American Geophysical Union, Fall Meeting 2013, abstract #GC11B-0990
2013
Developing a robust wireless sensor network structure for environmental sensing. Zhang, Z., C. Oroza, S.D. Glaser, R.C. Bales and M.H. Conklin. (2013): American Geophysical Union, Fall Meeting 2013, abstract #C41B-0630
2012
Southern Sierra Critical Zone Observatory: 2011-2012 Annual Report to National Science Foundation. Bales, R. (2012): NSF Award 0725097
2012
Critical Zone Observatories (CZOs): Integrating measurements and models of Earth surface processes to improve prediction of landscape structure, function and evolution (Invited). Chorover J., Anderson S. P., Bales R. C., Duffy C., Scatena F. N., Sparks D. L., White T. (2012): Abstract GCS4A-05 presented at 2012 Fall Meeting, AGU, San Francisco, Calif., 3-7 Dec (Talk) Cross-CZO National
2012
Critical Zone Observatories (CZOs): Integrating measurements and models of Earth surface processes to improve prediction of landscape structure, function and evolution (Invited). Chorover, J., Anderson, S.P., Bales, R.C., Duffy, C., Scatena, F.N., Sparks, D.L., and White, T. (2012): Fall Meeting, American Geophysical Union, December 2012. Abstract GC54A-05. National
2012
Paired tree and soil instrumentation: what can we learn from two instrumented sites across various gradients in a forested catchment. Hartsough, P.C., Roudneva, E., Malazian, A.I., Meadows, M.W., Bales, R.C., and Hopmans, J.W. (2012): Fall meeting, American Geophysical Union, December 2012. Abstract H31G-1211.
2012
Common Critical Zone Observatory Infrastructure and Measurements. J. Chorover, F.N. Scatena, T. White, S. Anderson, A.K. Aufdenkampe, R.C. Bales, S.L. Brantley, G. Tucker. (2012): A Guide Prepared By CZO PIs, September 27, 2012 Cross-CZO National
2012
Water and energy gradients produce resilience and thresholds in ecosystem function in the western Sierra Nevada Mountains. Kelly, A.E., Goulden, M., Bales, R.C., Meadows, M.W., and G. Winston (2012): Fall Meeting, American Geophysical Union, December 2012. Abstract B51C-0559.
2012
Sampling design and optimal sensor placement strategies for basin-scale SWE estimation. Kerkez, B., Welch, S.C., Bales, R.C., Glaser, S.D., Rittger, K.E., and R. Rice (2012): Fall Meeting, American Geophysical Union, December 2012. Abstract C33C-0683.
2012
Connecting the snowpack to the internet of things: an IPv6 architecture for providing real-time measurements of hydrologic systems (Invited). Kerkez, B., Zhang, Z., Oroza, C., Glaser, S.D., and Bales, R.C. (2012): Fall meeting, American Geophysical Union, December 2012. Abstract C32B-07.
2012
Under-canopy snow accumulation and ablation measured with airborne scanning LiDAR altimetry and in-situ instrumental measurements, southern Sierra Nevada, California. Kirchner, P.B., Bales, R.C., Musselman, K.N., and Molotch, N.P. (2012): Fall Meeting, American Geophysical Union, December 2012. Abstract C14B-08.
2012
Comparing methods for quantifying soil moisture in the southern Sierra Nevada, California. Meadows, M, Hartsough, P.C., Hopmans, J.W., Malazian, A., Kerkez, B., Bales, R., Kelly, A., Goulden, M. (2012): Joint Meeting of the Second International Soil Sensing Technology Conference, the Soil Physics Technical Committee Annual Meeting. January 3-7, 2012
2012
Integrating soil water measurements from plot to catchment scale in a snow-dominated, mixed-conifer forest of the southern Sierra Nevada. Meadows, M.W., Hartsough, P.C., Bales, R.C., Hopmans, J.W., and Malazian, A.I. (2012): Fall Meeting, American Geophysical Union, December 2012. Abstract H31G-1198.
2012
Effects of forest structure on snow accumulation and melt derived from ecohydrological instrument clusters across the Western US (Invited). Molotch, N.P., Musselman, K.N., Kirchner, P.B., Bales, R.C., and Brooks, P.D. (2012): Fall Meeting, American Geophysical Union, December 2012. Abstract C33D-0684. Cross-CZO
2012
Forest management effects on snow, runoff and evapotranspiration in Sierra Nevada mixed-conifer headwater catchments. Ray, R.L., Saksa, P.C., Bales, R.C., and Conklin, M.H. (2012): Fall Meeting, American Geophysical Union, December 2012. Abstract GC51F-05.
2011
Southern Sierra Critical Zone Observatory: 2010-2011 Annual Report to National Science Foundation . Bales, R. (2011): NSF Award 0725097
2011
Relationships between elevation, photosynthesis and evapotranspiration in the Sierra CZO. Goulden, M., Winston, G., Kelly, A., Meadows, M., and Bales, R. (2011): National CZO Program 2011 All Hands Meeting
2011
Comparison of sap flux data from two instrumented tree species in a forested catchment with different levels of water stress. Hartsough, P.C. Roudneva, E., Malazian, A.I., Meadows, M.W., Kelly, A.E., Bales, R.C., Goulden, M., Hopmans, J.W. (2011): Fall meeting, American Geophysical Union, December 2011. Abstract GC31A-1023.
2011
Water and carbon cycling along the Sierra Nevada climate gradient. Kelly, A.E., Goulden, M., Meadows, M.W., Bales, R.C., Winston, G. (2011): Fall meeting, American Geophysical Union, December 2011, Halls A-C, 8:00 AM. Abstract B41A-0203.
2011
Effects of evapotranspiration heterogeneity on catchment water balance in the Southern Sierra Nevada of California. Kerkez, B., Kelly, A.E., Lucas, R.G., Son, K., Glaser, S.D., Bales, R.C. (2011): Fall meeting, American Geophysical Union, December 2011, Room 2004, 9:15 AM - 9:30 AM. Abstract B41H-06.
2011
"Seeing the Snow Through the Trees: Accumulation in forested catchments as determined from snow depth sensor and LiDAR measurements. Kirchner, P. B., Bales, R. C., Musselman K. N., Flanagan J., and Guo, Q. (2011): National CZO Program 2011 All Hands Meeting
2011
Mountain front precipitation accumulation over a 3300m elevation gradient from scanning LiDAR? snow depth and in-situ instrumental measurements, southern Sierra Nevada, California. Kirchner, P.B., Bales, R.C. Flanagan, J., Musselman, K.N., Molotch, N.P. (2011): Fall meeting, American Geophysical Union, December 2011, Room 3011, 2:10 PM - 2:25 PM. Abstract C23F-03.
2011
Comparing methods for quantifying soil moisture in the southern Sierra Nevada, California. Meadows, M.W., Hartsough, P.C., Kerkez, B., Bales, R.C., Kelly, A.E., Hopmans, J.W., Hedge, C., Goulden, M., Glaser, S.D. (2011): Fall meeting, American Geophysical Union, December 2011. Abstract H41D-1054.
2011
Inter-annual snow accumulation and melt patterns in a sub-alpine mixed conifer forest: results from a distributed physically based snow model. Musselman, K.N., Molotch, N.P., Margulis, S.A., Kirchner, P.B., Bales, R.C. (2011): Fall meeting, American Geophysical Union, December 2011, Halls A-C, 1:40 PM. Abstract C33D-0671.
2011
An Assessment of Snowcover in 6 Major River Basins of Sierra Nevada and Potential Approaches for Long-term Monitoring. Rice, R., Bales, R.C. (2011): Fall meeting, American Geophysical Union, December 2011. Abstract C33E-0689.
2011
Forest management for water: a hydro-ecological modeling exercise of headwater catchments in the mixed-conifer belt of the Sierra Nevada. Saksa, P.C., Bales, R.C., Ray, R.L. (2011): Fall meeting, American Geophysical Union, December 2011. Abstract H51D-1230.
2011
Estimating Snow Water Equivalent over the American River in the Sierra Nevada Basin Using Wireless Sensor Networks. Welch, S.C., Kerkez, B., Glaser, S.D., Bales, R.C., Rice, R. (2011): Fall meeting, American Geophysical Union, December 2011. Abstract IN32A-07.
2010
Future Directions for Critical Zone Observatory (CZO) Science. Anderson, R.S., Anderson, S., Aufdenkampe, A.K., Bales, R., Brantley, S., Chorover, J., Duffy, C.J., Scatena, F.N., Sparks, D.L., Troch, P.A., Yoo, K. (2010): CZO Community, December 29, 2010 Cross-CZO National
2010
Southern Sierra Critical Zone Observatory: 2009-2010 Annual Report to National Science Foundation. Bales, R. (2010): NSF Award 0725097
2010
Spatial distribution of snow water equivalent across the central and southern Sierra Nevada. Bales, R.C., Rice, R., Meng, X. (2010): Fall meeting, American Geophysical Union, December 2010. Abstract C33E-0592.
2010
Soil Moisture/ Tree Water Status Dynamics in Mid-Latitude Montane Forest, Southern Sierra Critical Zone Observatory, CA. Hartsough, P.C., Malazian, A., Meadows, M.W., Roudneva, K., Storch, J., Bales, R.C., Hopmans, J.W. (2010): Fall meeting, American Geophysical Union, December 2010. Abstract H11G-0894.
2010
A Hybrid System Model of Seasonal Snowpack Water Balance. Kerkez B., Glaser S., Dracup J., Bales R. (2010): HSCC '10 Proceedings of the 13th ACM international conference on Hybrid systems: computation and control, Stockholm, Sweden
2010
Design and development of a wireless sensor network to monitor snow depth in multiple catchments in the American River basin, California: hardware selection and sensor placement techniques. Kerkez, B., Rice, R., Glaser, S.D., Bales, R.C., Saksa, P.C. (2010): Fall meeting, American Geophysical Union, December 2010. Abstract IN34A-07.
2010
Estimating under-canopy ablation in a subalpine red-fir forest, southern Sierra Nevada, California . Kirchner, P.B., Bales, R.C., Rice, R., Musselman, K.N., Molotch, N.P. (2010): Fall meeting, American Geophysical Union, December 2010. Abstract C33E-0594.
2010
Comparing plot-scale sensor measurements to the watershed level: a comprehensive case study of snow depth and soil moisture in the southern Sierra Nevada, California. Meadows, M.W., Kerkez, B., Hartsough, P.C., Lucas, R.G., Bales, R.C., Hopmans, J.W., Glaser, S.D. (2010): Fall meeting, American Geophysical Union, December 2010. Abstract C13C-03.
2010
Simulating plot-scale variability of snowpack states in conifer forests using hemispherical photography and a process based one-dimensional snow model. Musselman, K.N., Molotch, N.P., Margulis, S.A., Lehning, M., Kirchner, P.B., Bales, R.C. (2010): Fall meeting, American Geophysical Union, December 2010. Abstract C33E-0590.
2010
A Comparison of the Fractional MODIS and LANDSAT Thematic Mapper with Ground-Based Snow Surveys in the Sierra Nevada . Rice, R., Bales, R.C., Kirchner, P.B., Saksa, P.C., Rittger, K.E., Painter, T.H., Dozier, J. (2010): Fall meeting, American Geophysical Union, December 2010. Abstract C33E-0589.
2009
Southern Sierra Critical Zone Observatory: 2008-2009 Annual Report to National Science Foundation. Bales, R. (2009): NSF Award 0725097
2009
Water and geochemical responses to seasonal changes across the rain-snow transition in the Southern Sierra Nevada (Invited) . Bales, R.C., Hunsaker, C.T., Meadows, M., Kerkez, B., Glaser, S.D., Liu, F., (2009): Fall meeting, American Geophysical Union, December 2009. 90(52). Abstract B32A-06
2009
Closing the Loop: Moisture dynamics across the soil/biotic interface in a mid-elevation forested landscape, Sierra Nevada, CA. Hartsough, P.; Malaizan, A.; Meadows, M.; Hopmans, J.W.; Bales, R. (2009): Ecological Society of America Annual Meeting, Albuquerque, NM
2009
Multi-scale observations and modeling of the snowpack in a forested Sierra Nevada catchment. Kirchner, P.B., Bales, R.C., Musselman, K.N., Molotch, N.P. (2009): Fall meeting, American Geophysical Union, December 2009. 90(52). Abstract C23D-08.
2009
The Science of Wireless Sensor Networks: Improving engineered systems through scientific analysis . Krekez, B., Meadows, M., Glaser, S.D., Bales, R.C. (2009): Fall meeting, American Geophysical Union, December 2009. 90(52). Abstract IN13C-03.
2009
Controls of Stream Water Chemistry in Small catchments Across Snow/Rain Transition in the Southern Sierra, California . Liu, F., Hunsaker, C.T., Bales, R.C. (2009): Fall meeting, American Geophysical Union, December 2009. 90(52). Abstract H33H-0987.
2009
Sediment Sources in Four Small Mountain Streams in the Central Sierra Nevada, California . Martin, S.E., Hunsaker, C.T., Bales, R.C. (2009): Fall meeting, American Geophysical Union, December 2009. 90(52). Abstract EP53D-0649.
2009
Soil moisture response to snowmelt and rainfall across elevation, aspect and canopy cover in the Southern Sierra Nevada . Meadows, M.W., Bales, R.C., Hopmans, J.W., Hartsough, P.C., O'Geen, A.T., Kirchner, P.B. (2009): Fall meeting, American Geophysical Union, December 2009. 90(52). Abstract H33A-0856
2009
A mechanistic approach for estimating snowpack dynamics in a conifer forest . Musselman, K.N., Molotch, N.P., Margulis, S.A., Kirchner, P.B., Bales, R.C. (2009): Fall meeting, American Geophysical Union, December 2009. 90(52). Abstract C23D-07
2008
Southern Sierra Critical Zone Observatory: 2007-2008 Annual Report to National Science Foundation. Bales, R. (2008): NSF Award 0725097
2008
Snow and Soil Moisture Response Across Elevation, Aspect and Canopy Variables in a Mixed-conifer Forest, Southern Sierra Nevada. Bales, R., Meadows, M., Hopmans, J., Hartsough, P., Kirchner, P. (2008): Fall meeting, American Geophysical Union, December 2008. 89(53). Abstract C21A-0496.
2008
"Hydroclimate, ecosystem links & the Southern Sierra Critical Zone Observatory. Bales, R; Hunsaker, C; Kirchner, P; Conklin, M; Lucas, R. (2008): Southern Sierra Science Symposium
2008
Remote Environmental Monitoring of Hydrologic Biotic Interaction in a Mountain Environment. Hartsough, P., Malazian, A., Tuli, A., Kamai, T., Kizito, F., Bales, R., Broad, A., Hopmans, J. (2008): Fall meeting, American Geophysical Union, December 2008. 89(53). Abstract H51H-0974.
2008
Water Yield and Runoff Timing Across the Rain-snow Transition at the Kings River Experimental Watersheds in Californias Southern Sierra Nevada. Hunsaker, C., Bales, R. (2008): Fall meeting, American Geophysical Union, December 2008. 89(53). Abstract 13C-0933
2008
Snowmelt infiltration and evapotranspiration in Red Fir forest ecosystems of the Sierra Nevada. Kirchner, P., Bales, R., North, M., Small, E. (2008): Fall meeting, American Geophysical Union, December 2008. 89(53). Abstract C21C-0572.
2007
Southern Sierra Critical Zone Observatory: Integrating water cycle & biogeochemical processes across the rain-snow transition . Bales, R. (2007): Fall meeting, American Geophysical Union, December 10, 2007; Abstract H13A-0962
2007
Southern Sierra Critical Zone Observatory (CZO): hydrochemical characteristics, science and measurement strategy. Bales, R.; Hunsaker, C.; Conklin, M.; Kirchner, J.; Bouer, B.; Kirchner, P. (2007): American Geophysical Union, Fall Meeting 2007, abstract #H51K-02
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News
More news about SSCZO on Center for Ecosystem Climate Solutions
24 Nov 2020 - More news about SSCZO on Center for Ecosystem Climate Solutions, which grew out of the SSCZO, also on Sustainable California
27-minute film California’s Watershed is being shown on PBS nationwide
24 Nov 2020 - This film, plus our 90-minute documentary Beyond the Brink, are also available at https://www.beyondthebrink.global/
2020 CZO Webinar Series on Sustainability
17 Jun 2020 - For an updated listing of these talks, including abstracts, see /national/education-outreach/sustainability-2020/ The U.S....
NSF News Release: Billions of gallons of water saved by thinning forests
11 May 2018 - Too many trees in Sierra Nevada forests stress water supplies, scientists say
Watch Online: AGU 2017 Nye Lecture by Roger Bales
17 Jan 2018 - Dr. Roger Bales's Nye Lecture, "Making up for lost snow: lessons from a warming Sierra Nevada", is now available to watch online.
New SSCZO comic artfully communicates research
19 Jul 2017 - Wonder what soils and sponges have in common? Or why some trees in the Sierra Nevada are dying while others are surviving? Find out in our new comic.
Bales named 2017 John F. Nye Lecturer
05 Jul 2017 - Southern Sierra CZO Principal Investigator, Roger Bales, was named the 2017 John F. Nye Lecturer from the AGU Cryosphere Focus Group.
UCTV: Southern Sierra CZO researchers featured on Sustainable California channel
21 Jun 2017 - University of California Television (UCTV) features Bales, Conklin, Glaser, Safeeq, and others on the new Sustainable California channel
2017 CZO Webinar Series: Critical Zone and Society
06 Apr 2017 - 2017 CZO Webinar Series: Critical Zone and Society.
Living with less snow in the West: What Global Warming means for our water supplies
15 Apr 2016 - The story in The Desert Sun, shows insight into the research at SSCZO and efforts being made to understand the shift in the Sierra snowpack.
NY Times: Sierra Nevada Snow Won’t End California’s Thirst
11 Apr 2016 - New York Times reporter, Henry Fountain spoke with Southern Sierra CZO PIs Roger Bales and Martha Conklin and investigtor Mohammad Safeeq as they...
“Natural Inquirer” education journal features study by Southern Sierra researchers
01 Apr 2016 - A study by Southern Sierra Critical Zone Observatory researchers was featured in a recent issue of Natural Inquirer, a middle school...
White House Water Summit: UC Water joins the call to action with technology pioneered at SSCZO
22 Mar 2016 - As part of World Water Day, the White House is hosting a Water Summit today and released its Commitments to Action on Building a Sustainable...
Every El Nino is Different: Roger Bales comments on the state of CA snowpack on KQED Forum
18 Mar 2016 - UC Merced Professor Roger Bales was featured on the KQED Forum radio show on March 3, 2016. Bales responded to callers' questions...
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Roger Bales in The Modesto Bee: Sierra is white with snow, but more drought solutions needed
22 Jan 2016 - SSCZO Principal Investigator Roger Bales wrote an opinion piece published in The Modesto Bee this week. He delivers messages that Californians and...
Roger Bales gives local context to Central Valley readers on UN Climate Conference
02 Dec 2015 - Bales offers local context on climate change and UN Conference for Cen. Valley-- and explains how California can pave the way to a sustainable future.
KQED Quest program features Eel River and Sierra CZOs
10 Nov 2015 - San Francisco's KQED public television features the Eel River and the Southern Sierra CZOs in a production of QUEST, a science and technology...
SSCZO researchers featured in Tulare Basin Wildlife Partners “One Watershed” series
15 Oct 2015 - SSCZO's Mohammad Safeeq, Carolyn Hunsaker, and Roger Bales discuss forest health, sustainable management, and impacts on water in a changing climate.
California drought exposes Sierra’s weaknesses
08 Feb 2014 - In California, below-average precipitation for the third year in a row has lead to a worrisome situation in the Sierras.
SSCZO multidisciplinary opportunities for research collaborators and graduate students
17 Oct 2012 - SSCZO multidisciplinary opportunities for research collaborators and graduate students
International Innovation Publishes August Edition with Special Focus on US Critical Zone Program
30 Aug 2012 - The European magazine, International Innovation Environment, published bi-annually, focused the August issue on "How science must lead the way to a...
California Researchers Expand ‘Intelligent Water Infrastructures Initiative’
07 Nov 2011 - In the Sierra Nevada, wireless sensor nodes are transmitting data indicating the amount of snow that has fallen or melted, as well as...
Barbara Boxer touts clean energy in UC Merced visit
26 Aug 2011 - The UC Merced campus received a rare visit on the first day of classes. As Democratic U.S. Sen. Barbara Boxer walked through the Sierra Nevada...
Better water management in forecast
18 Aug 2011 - In a remarkable outdoor laboratory in the Sierra, a team of researchers led by UC Merced hydrologist Roger Bales is using sensors to gather a mother...
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Events
CZO Webinar: Drought resilience and water security
Drought resilience and water security presented by Roger Bales
Online.
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