Bio


I am a geochemist and climate scientist who works on climate impacts on the water cycle, with a background in environmental science, engineering, and Earth science. I draw on my interdisciplinary training to study watershed responses to changes in hydroclimate, using both field and laboratory measurements as well as modeling approaches. I defended my Ph.D. in Earth System Science at Stanford University in 2018. I previously completed a M.S. in Geological & Environmental Sciences in 2014, and B.S. degrees in Civil & Environmental Engineering (Atmosphere/Energy) and Geological & Environmental Sciences in 2012.

Honors & Awards


  • Graduate Student Award for Scholarly and Research Achievement, Earth System Science, Stanford University (2018)
  • Editor’s Citation for Excellence in Refereeing, Geophysical Research Letters, American Geophysical Union (2017)
  • Centennial Teaching Assistant Award, Stanford University (2016)
  • NSF USSP, Urbino Summer School in Paleoclimatology NSF Scholarship (2014)
  • EDGE-STEM Fellowship, Stanford University (2013)
  • On To the Future Diversity Program, Geological Society of America (2013)
  • Hoefer Fund Partnership Award for Excellence in Mentoring Undergraduate Writing, Stanford University (2013)
  • Firestone Medal for Excellence in Undergraduate Research, Stanford University (2012)
  • Outstanding Senior in Geological and Environmental Sciences, Stanford University (2012)
  • Dean's Award for Oustanding Academic Achievement, Stanford University (2012)
  • David E. Lumley Young Scientist Scholarship for Energy and Environmental Science, American Geophysical Union (2011)
  • Barry M. Goldwater Scholarship Honorable Mention, Barry Goldwater Scholarship and Excellence in Education Foundation (2011)

Boards, Advisory Committees, Professional Organizations


  • Advisory Council Member, EarthArXiv (2017 - Present)
  • Graduate Student Advisor, Stanford Earth Summer Undergraduate Research (SESUR) Program (2015 - 2015)
  • Graduate Student Advisor, High School Intern Program, School of Earth Sciences (2012 - 2012)
  • Undergraduate Peer Advisor, Geological and Environmental Sciences Dept. (2011 - 2013)
  • Co-Editor-in-Chief (2012-13), Natural Sciences Editor (2011-12), Engineering Editor (2010-11), Stanford Undergraduate Research Journal (2010 - 2013)
  • Member, Geological Society of America (2013 - Present)
  • Member, Mineralogical Society of America (2011 - Present)
  • Member, Geochemical Society (2011 - Present)
  • Member and Lumley Young Scientist, American Geophysical Union (2010 - Present)

Professional Education


  • Doctor of Philosophy, Stanford University, ESS-PHD (2018)
  • Master of Science, Stanford University, GES-MS (2014)
  • Bachelor of Science, Stanford University, ENGR-BS (2012)
  • Bachelor of Science, Stanford University, GES-BSH (2012)

Current Research and Scholarly Interests


I am a geochemist and climate scientist who works on climate impacts on the water cycle, with a background in environmental science, engineering, and Earth science. I draw on my interdisciplinary training to study watershed responses to changes in hydroclimate, using both field and laboratory measurements as well as modeling approaches. I defended my Ph.D. in Earth System Science at Stanford University in 2018. I previously completed a M.S. in Geological & Environmental Sciences in 2014, and B.S. degrees in Civil & Environmental Engineering (Atmosphere/Energy) and Geological & Environmental Sciences in 2012.


My research interests include:
- Investigating the influence of plants, geology and climate on nutrient and chemical fluxes in freshwater systems, including quantifying patterns of covariation between solutes and hydrology.
- Developing new modeling frameworks for investigating the response of terminal watersheds and lake systems to climatic forcings.
- Documenting changes in past climate using terrestrial geologic records as indicators of hydroclimate change to test the robustness of climate model simulations used for future projections.

Research Assistantship
ICP-MS/TIMS Laboratory, Graduate Student Research Assistant (Spring and Summer 2012)

Teaching Experience
EESS 307 - Research Proposal Development and Delivery (Spring 2015 and 2017, and Winter 2018)
ESS/GS/EarthSys 12SC/101 - Environmental and Geological Field Studies in the Rocky Mountains (Sept 2011 - 2017; Head TA 2012, 2014-16)
ESS/EarthSys 132/232 - Evolution of Earth Systems (Winter 2017)
ESS 146A/246A - Atmosphere, Ocean, and Climate Dynamics: The Atmospheric Circulation (Winter 2016)
ESS 212 - Measurements in Earth Systems (Winter 2015 & 2016)
GES 150/Geophys 199 - Senior Seminar: Issues in Earth Sciences (Fall 2012 & 2013)
GES 55Q - The California Gold Rush: Geologic Background and Environmental Impact (Winter 2013)
CEE 173A/207A - Energy Resources (Grader, Fall 2011)

Short Courses and Additional Training
AAUS Scientific Diving Certification (2016)
Earthscope Institute: Geochronology & Earth Sciences (2014)
Urbino Summer School in Paleoclimatology (2014)

Lab Affiliations


All Publications


  • Warm and cold wet states in the western United States during the Pliocene-Pleistocene Geology Ibarra, D. E., Oster, J. L., Winnick, M. J., Caves Rugenstein, J. K., Byrne, M. P., Chamberlain, C. 2018; 46 (4): 355–358

    View details for DOI 10.1130/G39962.1

  • Differential weathering of basaltic and granitic catchments from concentration-discharge relationships GEOCHIMICA ET COSMOCHIMICA ACTA Ibarra, D. E., Caves, J. K., Moon, S., Thomas, D. L., Hartmann, J., Chamberlain, C. P., Maher, K. 2016; 190: 265-293
  • Spatial Patterns and Driving Mechanisms of Mid-Holocene Hydroclimate in Western North America Journal of Quaternary Science Hermann, N. W., Oster, J. L., Ibarra, D. E. 2018: 15

    View details for DOI 10.1002/jqs.3023

  • The influence of pluvial lake cycles on earthquake recurrence in the northwestern Basin and Range, USA Geological Society of America Special Paper Series - Accepted Egger, A. E., Ibarra, D. E., Weldon, R., Landgridge, R. M., Marion, B., Hall, J. 2018
  • Modeling the consequences of land plant evolution on silicate weathering American Journal of Science - Accepted Ibarra, D. E., Caves Rugenstein, J. K., Bachan, A., Baresch, A., Lau, K. V., Thomas, D. L., Lee, J., Boyce, C., Chamberlain, C. 2018
  • Evaluating Late Cretaceous OAEs and the influence of marine incursions on organic carbon burial in an expansive East Asian paleo-lake Earth and Planetary Science Letters Jones, M. M., Ibarra, D. E., Gao, Y., Sageman, B. B., Selby, D., Chamberlain, C., Graham, S. A. 2018; 484: 41-52
  • Late Miocene Uplift of the Tian Shan and Altai and Reorganization of Central Asia Climate GSA Today Caves, J. K., Bayshashov, B. U., Zhamangara, A., Ritch, A. J., Ibarra, D. E., Sjostrom, D. J., Mix, H. T., Winnick, M. J., Chamberlain, C. 2017; 27 (2)

    View details for DOI 10.1130/GSATG305A.1

  • Critical zone structure controls concentration-discharge relationships and solute generation in forested tropical montane watersheds Water Resources Research Wymore, A. S., Brereton, R. L., Ibarra, D. E., Maher, K., McDowell, W. H. 2017; 53 (7): 6279-6295

    View details for DOI 10.1002/2016WR020016

  • Concentration–discharge patterns of weathering products from global rivers Acta Geochimica Ibarra, D. E., Moon, S., Caves, J. K., Chamberlain, C., Maher, K. 2017
  • The Neogene de-greening of Central Asia GEOLOGY Caves, J. K., Moragne, D. Y., Ibarra, D. E., Bayshashov, B. U., Gao, Y., Jones, M. M., Zhamangara, A., Arzhannikova, A. V., Arzhannikov, S. G., Chamberlain, C. P. 2016; 44 (11): 887-890

    View details for DOI 10.1130/G38267.1

    View details for Web of Science ID 000386121200002

  • A hot and high Eocene Sierra Nevada GEOLOGICAL SOCIETY OF AMERICA BULLETIN Mix, H. T., Ibarra, D. E., Mulch, A., Graham, S. A., Chamberlain, C. P. 2016; 128 (3-4): 531-542

    View details for DOI 10.1130/B31294.1

    View details for Web of Science ID 000370973000010

  • Mid-latitude terrestrial climate of East Asia linked to global climate in the Late Cretaceous: REPLY GEOLOGY Gao, Y., Ibarra, D. E., Caves, J. K., Wang, C., Chamberlain, C. P., Graham, S. A., Wu, H. 2016; 44 (2): e379

    View details for DOI 10.1130/G37574Y.1

  • Constraining basin thermal history and petroleum generation using paleoclimate data in the Piceance Basin, Colorado Basin Research Tong, Y., Ibarra, D. E., Caves, J. K., Mukerji, T., Graham, S. A. 2016

    View details for DOI 10.1111/bre.12213

  • DIAGENETIC AND PALEOENVIRONMENTAL CONTROLS ON LATE CRETACEOUS CLAY MINERALS IN THE SONGLIAO BASIN, NORTHEAST CHINA CLAYS AND CLAY MINERALS Gao, Y., Wang, C., Liu, Z., Du, X., Ibarra, D. E. 2015; 63 (6): 469-484
  • QUANTIFYING CLOSED-BASIN LAKE TEMPERATURE AND HYDROLOGY BY INVERSION OF OXYGEN ISOTOPE AND TRACE ELEMENT PALEO CLIMATE RECORDS AMERICAN JOURNAL OF SCIENCE Ibarra, D. E., Chamberlain, C. P. 2015; 315 (9): 781-808

    View details for DOI 10.2475/09.2015.01

    View details for Web of Science ID 000368047900001

  • Stable runoff and weathering fluxes into the oceans over Quaternary climate cycles NATURE GEOSCIENCE von Blanckenburg, F., Bouchez, J., Ibarra, D. E., Maher, K. 2015; 8 (7): 538-U146

    View details for DOI 10.1038/NGEO2452

    View details for Web of Science ID 000357404200016

  • Mid-latitude terrestrial climate of East Asia linked to global climate in the Late Cretaceous GEOLOGY Gao, Y., Ibarra, D. E., Wang, C., Caves, J. K., Chamberlain, C. P., Graham, S. A., Wu, H. 2015; 43 (4): 287-290

    View details for DOI 10.1130/G36427.1

    View details for Web of Science ID 000352097900009

  • Steering of westerly storms over western North America at the Last Glacial Maximum NATURE GEOSCIENCE Oster, J. L., Ibarra, D. E., Winnick, M. J., Maher, K. 2015; 8 (3): 201-205

    View details for DOI 10.1038/NGEO2365

    View details for Web of Science ID 000350770900017

  • The late Pleistocene pluvial history of Surprise Valley, CA PACLIM: Proceedings of the 26th Pacific Climate Workshop, 2013 Ibarra, D. E., Egger, A. E., Maher, K. 2015: 137
  • Rise and fall of late Pleistocene pluvial lakes in response to reduced evaporation and precipitation: Evidence from Lake Surprise, California GEOLOGICAL SOCIETY OF AMERICA BULLETIN Ibarra, D. E., Egger, A. E., Weaver, K. L., Harris, C. R., Maher, K. 2014; 126 (11-12): 1387-1415

    View details for DOI 10.1130/B31014.1

    View details for Web of Science ID 000343759600001

  • URANIUM ISOTOPES IN SOILS AS A PROXY FOR PAST INFILTRATION AND PRECIPITATION ACROSS THE WESTERN UNITED STATES AMERICAN JOURNAL OF SCIENCE Maher, K., Ibarra, D. E., Oster, J. L., Miller, D. M., Redwine, J. L., Reheis, M. C., Harden, J. W. 2014; 314 (4): 821-857

    View details for DOI 10.2475/04.2014.01

    View details for Web of Science ID 000345105100001

  • Uranium isotopic variations in modern soils and dated soil minerals: Calibrating a potential paleo-rainfall proxy PACLIM: Proceedings of the 25th Pacific Climate Workshop, 2011 Oster, J. L., Maher, K., Ibarra, D. E. 2013: 239
  • Influence of eolian deposition and rainfall amounts on the U-isotopic composition of soil water and soil minerals GEOCHIMICA ET COSMOCHIMICA ACTA Oster, J. L., Ibarra, D. E., Harris, C. R., Maher, K. 2012; 88: 146-166