Scientific presentations

Invited presentations

• Ravindra Dwivedi, Paul A. “Ty” Ferre, Thomas Meixner, Jennifer McIntosh, G. -Y. Niu, and Jon Chorover, 2017, Multi-tracer approach coupled with numerical models to characterize water sources and flowpaths contributing to streamflow in a high elevation mountain catchment, UA Gov/Academic Science RectTable, Tucson, Arizona, April 26.

• Ravindra Dwivedi, Thomas Meixner, Jennifer McIntosh, Paul A. “Ty” Ferré, Christopher J. Eastoe, Guo-Yue Niu, Rebecca L. Minor, Greg Barron-Gafford, and Jon Chorover, 2017, Hydrologic functioning of the deep Critical Zone and contributions to streamflow in a high elevation catchment: testing of multiple conceptual models, CZO Grad Research Group seminar, October 12.

Other presentations

• Ravindra Dwivedi, Joel Biederman, Patrick Broxton, Jessie K. Pearl, Kangsan Lee, Bo M. Svoma, Willem J.D. van Leeuwen, and Marcos Robles, 2023, How forest structure regulates snowpack and terrestrial water input across a gradient from ephemeral to stable seasonal snowpacks, AGU Fall meeting, December 11-15, 2023, San Francisco, CA.

• Ravindra Dwivedi, Joel A. Biederman, Patrick D. Broxton, Kangsan Lee, Willem J.D. van Leeuwen, and Jessie K. Pearl, 2022, Forest density regulates root zone water stress and percolation at sites with contrasting ephemeral or stable seasonal snowpacks, RISE symposium, The University of Arizona, November 5, 2022.

• Ravindra Dwivedi, Joel A Biederman, Patrick D Broxton, Kang San Lee, Willem J Van Leeuwen, and Jessie K. Pearl, 2022, Forest structure controls on water inputs to soils, vegetation water stress, and percolation at sites with contrasting ephemeral or seasonal snowpack, AGU Fall meeting, December 12-16, 2022, Chicago, IL.

• J. E. Biederman, R. Dwivedi, P.D. Broxton, K. Lee, W. J. D. van Leeuwen, J. Leonard, M. Remke, M. D. Robles, J. K. Pearl, B. Svoma, 2022, Snowtography: A growing network of flexible, low-cost snow and soil moisture monitoring quantifies hydrologic impacts of forest management and disturbance, Biennial Conference of Science & Management on the Colorado Plateau & Southwest Region, September 13, 2022, Flagstaff, AZ.

• Ravindra Dwivedi, Joel A. Biederman, Patrick D. Broxton, Willem J.D. van Leeuwen, Kangsan Lee, 2021, Improved understanding of climate-forest-snow interactions in forested ecosystems leads to a better understanding of ecohydrologic processes and informs forest management, AGU Fall Meeting, 13-17 December, New Orleans, LA (Poster ID: H55Q-0935).

• Ravindra Dwivedi, C. Eastoe, J. F. Knowles, J. McIntosh, T. Meixner, P. A. T. Ferre, R. Minor, G. Barron-Gafford, N. Abramson, M. Stanley, and J. Chorover, 2019, A comparison of transit time distribution vs. fraction of young water to characterize storage in a mountain headwater catchment: does the tail matter?, AGU Fall Meeting 2019, San Francisco,  December 12 (Poster ID: H43G-2088).

• Ravindra Dwivedi, Tom Meixner, Jennifer C McIntosh, Ty P A Ferre, Christopher J Eastoe, Christopher L Castro, William E. Wright, Guo-Yue Niu, Rebecca L. Minor, John F Knowles, Greg Barron-Gafford, Nate Abramson, Bhaskar Mitra, M. Stanley and Jon Chorover, 2018, An improved and practical approach for estimating catchment-scale response functions through power spectral analysis, AGU Fall Meeting 2018, Washington D. C., December 10 (Poster ID: H13J-2089).

• Ravindra Dwivedi, Thomas Meixner, Jennifer McIntosh, Paul A. “Ty” Ferré, Christopher J. Eastoe, Rebecca L. Minor, Greg Barron-Gafford, and Jon Chorover, 2017, Hydrologic functioning of the deep Critical Zone and contributions to streamflow in a high elevation catchment: testing of multiple conceptual models, AGU Fall Meeting 2017, New Orleans, December 14 (Poster ID: H41C-1449).

• Peter Troch, Ravindra Dwivedi, Tao Liu, Antonio Meira, Tirthankar Roy, Rodrigo Valdés-Pineda, Matej Durcik, Saul Arciniega, and Jose Agustin Brena-Naranjo, 2017, Catchment-scale groundwater recharge and vegetation water use efficiency, AGU Fall Meeting 2017, New Orleans, December 15 (Poster # H51B-1260).

• Ravindra Dwivedi, Thomas Meixner, Jennifer McIntosh, Paul A. “Ty” Ferré, G.-Y. Niu, and Jon Chorover, 2017, Characterization of water sources and flowpaths and their influence on groundwater geochemical evolution and mineral weathering rates in a high elevation mountain catchment, Critical Zone Science: Current advances and future opportunities, Arlington, Virginia, June 4-6.

• Ravindra Dwivedi, Paul A. “Ty” Ferré, Thomas Meixner, Jennifer McIntosh, Jon Chorover, G. -Y. Niu, Marisa M. Earll, Chloe Fandel, Alissa M. White and Nicole Weber, 2017, Multi-tracer approach coupled with numerical models to characterize water sources and flowpaths contributing to streamflow in a high elevation mountain catchment El Día del Agua y La Atmósfera, Tucson, Arizona, March 27.

• Peter Troch, Ravindra Dwivedi, Rodrigo Valdés-Pineda, Antonio Alves Meira-Neto, Tirthankar Roy, Tao Liu, Matej Durcik, Saúl Arciniega-Esparza and José Agustín Breña-Naranjo, 2017, Linkages between vegetation water use efficiency and groundwater recharge at a catchment-scale, WRRC conference 2017- Irrigated Agriculture in Arizona: A Fresh Perspective, Tucson, Arizona, March 28.

• Ravindra Dwivedi, Thomas Meixner, Jennifer McIntosh, Paul A. “Ty” Ferré, and Jon Chorover, 2016, A multi-tracer approach coupled to numerical models to improve understanding of mountain block processes in a high elevation, semi-humid catchment, GSA annual meeting, Denver, Colorado, September 25-28, and AGU Fall meeting, San Francisco, California, December 12-16.

• Ravindra Dwivedi and M. Zreda, 2016, “Fortune favors the prepared”: ensuring through training to future hydrogeologists, 29th Annual symposium of the Arizona Hydrological Society, Tucson, Arizona, September 14-17.

• Ravindra Dwivedi, Thomas Meixner, Paul A. “Ty” Ferré, Jennifer McIntosh, and Jon Chorover, 2016, The hydrologic functioning of a semi-humid mountain catchments: Marshall Gulch Catchment, Tucson, Arizona, 29th Annual symposium of the Arizona Hydrological Society, Tucson, Arizona, September 14-17.

• Ravindra Dwivedi, Elizabeth Kahler, Jack Anderson, Oleksiy Chernoloz, Arianne DePauli, Xiaobo Hou, Mandla Kunnie, Edwin Norlin, Mekha Pereira, Rey Reys, Joseph Valachovic, and Marek Zreda, 2016, Importance of the Hydrogeology laboratory in making well-trained hydrogeologists for tomorrow, El Día del Agua y La Atmósfera, Tucson, Arizona, April 1.

• Ravindra Dwivedi, Thomas Meixner, Paul A. “Ty” Ferré, Jennifer McIntosh, and Jon Chorover, 2016, Impact of the projected climate change on the hydrologic functioning of mountain catchments with application to the Marshall Gulch Catchment, Tucson, Arizona, El Día del Agua y La Atmósfera, Tucson, Arizona, April 1.

• Ravindra Dwivedi, Thomas Meixner and Paul A. “Ty” Ferré, 2015, Changing role of mountain systems towards water sustainability and ecosystem services: the climate change factor, Environmental Grad Blitz, Institute of the Environment, The University of Arizona, Tucson, Arizona, November 3. 

• Ravindra Dwivedi, Thomas Meixner and Paul A. “Ty” Ferré, 2015, Effects of hydraulic conductivity and porosity on the groundwater age distribution in composite systems, AHS Annual Symposium, Where did the water go?, Phoenix, Arizona, September 16-19.

• Ravindra Dwivedi, Thomas Meixner and Paul A. “Ty” Ferré, 2015, Similarities and differences between transport of a solute and water age mass: why the picture is so blurry?, 25th El Dia del Agua, The University of Arizona, Tucson, Arizona, April 8. 

• Ravindra Dwivedi and T. Meixner, 2015, Lava lamp to flow in fracture-water to fracture-porous media systems: unity in physics but diversity in implications, 25th El Dia del Agua, The University of Arizona, Tucson, Arizona, April 8. 

• Ravindra Dwivedi and T. Meixner, 2014, Effect of aquifer heterogeneities on the Water Residence Time (WRT) and their significance, AIPG/AHS National Conference, Water and Rocks, the Foundations of Life, Prescott, Arizona, September 13-16.

• Guerra, P., M. Dowd, S. Panday, R. Dwivedi, P. Kurzanski, 2014, GIS-based Method for High-resolution Mapping of LNAPL Plume Transmissivity and Recoverability: Case Study at CSXT Stadium Project, Railroad Environmental Conference, Urbana, Illinois, October 28-29.

• McCord, J., C. Roman, M. F. Hernandez, S. Panday, and R. Dwivedi, 2013, Sensitivity analysis of variably saturated flow and transport in a heap leaching operation, Heap Leach conference, Vancouver, Canada, September 22-12.

• Guerra, P. A., S. Panday, R. Dwivedi, M. Peterson, S. Williams, L. M. Sturgis, E. M. Engle, S. C. Sigstedt, and D. McDonald, 2012, Predicting the Fate of Chemical and Radiological Groundwater Contamination on the Ambient Receiving Waters of the San Francisco Bay in Support of a Focused Feasibility Study, AMEC Technical Summit, New York City, New York, October 19-20.

• McCord, J. T., R. Dwivedi, K. F. Morrison, and S. Panday, 2012, Variably saturated flow and transport in a heap leaching operation, 3rd International Congress on Water Management in the Mining Industry, Water in Mining, Chile, June 6-8.

• Ravindra Dwivedi, J. T. McCord, and J. A. Clark, 2010, Landscape consumptive water use estimation Which method to use and Why?, New Mexico Water Research Symposium, Socorro, New Mexico, August 3.

• Wilson, J. L. and R. Dwivedi, 2009, Geothermal Forcing of Micrometeorological Conditions in Caves, GSA Annual Meeting, Portland, Oregon, October 18-21.

• Ravindra Dwivedi and J. L. Wilson, 2009, Coupled Heat and Mass Transfer Processes in Enclosed Environments, COMSOL Conference, Boston, Massachusetts, October 8-10.

• Ravindra Dwivedi and J. L. Wilson, 2008, Convective Non-laminar and Turbulent Flow in Hydrogeologic Systems, AGU Fall Meeting, San Francisco, California, Dec.15-19.

• J. L. Wilson, S.C. Tyler, A. M. Jorgensen, R. Dwivedi, P. J. Boston, and P. Burger, 2008, Sensing turbulent flow and heat transport in a cave conduit, AGU Fall Meeting, San Francisco, California, December 15-19.

• Ravindra Dwivedi and J. L. Wilson, 2008, Effect of slope on subsurface free-convection processes, Computational Methods in Water Resources XVII International Conference, San Francisco, California, July 6-10.

• Ravindra Dwivedi, J. L. Wilson, Penelope J. Boston, Scott W. Tyler, and A. M. Jorgensen, 2008, Role of Free Convection in Cave Micrometeorology, CUAHSI/NSF workshop on Fiber Optic Distributed Temperature Sensing for Ecological Characterization", HJ Andrews Experimental Forest, Oregon, from June 2-7.