Soderblom Receives 2014 Whipple Award

Laurence A. Soderblom received the 2014 Whipple Award at the 2014 American Geophysical Union Fall Meeting, held 15–19 December in San Francisco, Calif. The award recognizes an individual who has made an outstanding contribution in the field of planetary science.


Soderblom_Laurence-Whipple_Award_SIZEDThe Whipple Award is the highest honor given by the American Geophysical Union Planetary Sciences section and is named for Fred Whipple, a famed space scientist and the preeminent cometary scientist of the mid-20th century. This year’s Whipple Award goes to Larry Soderblom of the U.S. Geological Survey Astrogeology Science Center in Flagstaff.

Larry is the consummate planetary scientist. A geophysicist by training and a geologist by inclination, his work is of extraordinary breadth. Over a more than 4-decade career in planetary science, he has participated in more than a dozen planetary missions ranging spatially from Venus out to Neptune and all the planets (and several minor bodies) in between. Scientifically, he is a generalist, but more precisely, he is better thought of as a specialist in dozens of subfields. His work is rigorous, quantitative, mindful of complexities yet always strives to maximize the science.

Notably, only in his thirties, Larry was deputy Imaging Team leader for the Voyager mission, overseeing that first scientific exploration of the satellites of the outer solar system; today, he is interdisciplinary scientist for satellites for Cassini-Huygens. And there is a direct connection to Fred Whipple’s work: Larry led the development of the camera/spectrometer for the experimental Deep Space 1 mission. The images returned of comet Borrelly were our first clues to the geologic complexity of comets now gloriously revealed by Rosetta.

Larry’s exceptional abilities have made him a target for leadership positions, and he has done extraordinary service for the community. He served twice as branch chief in Flagstaff and chaired expertly and effectively various working groups, subcommittees, and committees for NASA. And most recently, he was vice-chair of the Planetary Science Decadal Survey for the National Academy.

Finally, Larry is exceptional for his humanity and his willingness to mentor younger scientists. Larry is a model of unselfish cooperation in research, indeed, an exemplar of wisdom and humor in the midst of scientific discovery and its inevitable controversies.

Congratulations to Laurence A. Soderblom for a lifetime of outstanding contributions to planetary science.

—William B. McKinnon, Washington University in St. Louis, St. Louis, Mo.



I am most grateful to all of my scientific friends and colleagues, to be recognized with this year’s Whipple Award. Through my career I have been so fortunate to participate in an eye-opening journey of exploration across our solar system—a journey that began for me in the late 1960s. I am deeply indebted to my two Ph.D. thesis advisors, Bruce Murray and Gene Shoemaker, for encouraging me and for setting me onto this mind-bending path. I have been truly privileged to participate in the first stage of exploration of the outer solar system and witness firsthand the explosion in our understanding of planets and planetary processes, as it has so rapidly unfolded.

When the Voyager missions were started, our vision of what lay ahead in our adventure to explore the outer planets and satellites of our solar system was primitive and unimaginative. Most expected the moons of the giant planets to be battered, lifeless, and geologically dead. But over the last 45 years, our view of these worlds has exploded with a panoply of unimaginably beautiful and complex activity. Plumes, geysers, molten calderas, rain, rivers, lakes, and seas popped up from Mars to comets to Io to Enceladus to Titan to Triton. What lessons can we take from these active places into the next phase of exploration? When the Voyagers were launched, our naiveté allowed that only planet Earth was dynamically active. But exploring our solar system, our cosmic backyard, has awed us with unforeseen complexity, scientific beauty, and rich activity. We are now far better poised for our nascent exploration of the worlds beyond that backyard.

—Laurence A. Soderblom, U.S. Geological Survey, Flagstaff, Ariz.

Neish Receives 2014 Ronald Greeley Early Career Award in Planetary Science

Catherine Neish received the 2014 Ronald Greeley Early Career Award in Planetary Science at the 2014 American Geophysical Union Fall Meeting, held 15–19 December in San Francisco, Calif. The award recognizes significant early career contributions to planetary science.

Neish_Catherine-Ronald_Greeley_Early_Career_Award_SIZEDThe Greeley Early Career Award is named for pioneering planetary scientist Ronald Greeley. During his lifetime, Ron was involved in nearly every major planetary mission and was extraordinarily active in service to the community. Ron’s greatest legacies, however, are those he mentored, and it is young scientists whose work and promise we seek to recognize. This year’s Greeley award winner is Catherine Neish, an assistant professor at the Florida Institute of Technology. Catherine received her Ph.D. from the University of Arizona in 2008 and, after a postdoctoral stint at NASA Goddard, joined the faculty at Melbourne in the Department of Physics and Space Sciences.

Catherine specializes in planetary surface properties, and she is ecumenical in choice of target, having written papers that incorporate data from eight different planetary bodies: Mercury, Venus, Earth, the Moon, Europa, Ganymede, Titan, and Triton. This certainly embraces the spirit of the Greeley award, as Ron was someone who was interested in the whole of planetary science, not just a single planetary body.

Catherine is expert in the use of orbital radar observations and has used these with optical imaging and topography to thoroughly revise our understanding of impact melt flows. She has also proposed that craters at high latitudes and low elevations on Titan are not simply buried by later sediments but form flattish to begin with, in a manner similar to craters formed on Earth in soft, oceanic sediments.

But not all of Catherine’s work is remote sensing based. Her Ph.D. thesis had three doctor-fathers: Ralph Lorenz, Jonathan Lunine, and Mark Smith. Her papers with them on the astrobiological potential of Titan and the lab work that went into them are notable. The relative ease in which biological molecules such as amino acids can form in ammonia-infused “Titan primordial soup” suggests (as if we needed reminding) that life may be ubiquitous in the universe. One suspects such work will have long-lasting impact.

Congratulations to Catherine D. Neish, the 2014 recipient of the Ronald Greeley Early Career Award in Planetary Science.

—William B. McKinnon, Washington University, Saint Louis, Mo



I have always greatly admired the curiosity that Ron Greeley showed for all the many wonders of the solar system. I work in many diverse fields, and every time I start a new project, I see Ron’s influence there. His willingness to study new processes on a range of planetary objects makes him the type of planetary scientist that I endeavor to be. I hope to continue to follow in his footsteps as I progress in my career and am deeply honored to receive this award that bears his name.

I would also like to take this opportunity to thank all of those who have supported me throughout my career. Science is not a solitary enterprise, and I have benefited greatly from the advice and wisdom of a great many people. Thanks to Ellen Howell and Mike Nolan for introducing me to planetary radar, a passion that has guided my career. Thanks to the entire community of graduate students, postdocs, and faculty at the Lunar and Planetary Laboratory for fostering my curiosity for planetary science. I would especially like to thank the incoming class of 2004 for their friendship and Ralph Lorenz, Jonathan Lunine, Mark Smith, and Árpád Somogyi for guiding my Ph.D. research. Thanks also to my colleagues at the Applied Physics Laboratory and Goddard Space Flight Center for helping an inexperienced postdoc transform into a confident scientist. Finally, I would like to thank my parents for their unwavering support and my husband, Shawn, for constantly pushing me to be my best. I share this award with them.

—Catherine Neish, Florida Institute of Technology, Melbourne

Horton Receives 2014 Ocean Sciences Voyager Award

Benjamin Horton received the 2014 Ocean Sciences Voyager Award at the 2014 American Geophysical Union Fall Meeting, held 15-19 December in San Francisco, Calif. The award is given to a midcareer scientist (10-20 years postdegree) in recognition of significant contributions and expanding leadership in ocean sciences.


Horton-Ben_Oceans-Sciences-Voyager-Award_SIZEDIt gives me great pleasure to introduce Dr. Benjamin Horton as the recipient of the inaugural American Geophysical Union (AGU) Ocean Sciences Voyager Award.
Ben’s research focuses on the mechanisms and nature of past sea level changes, including those associated with earthquakes, tsunamis, and storms, to understand how these processes will impact future coastal environments. Ben has rapidly distinguished himself as a leader both within and beyond his discipline.
Certainly, the impact and quality of Ben’s publication record alone qualifies him for the Voyager Award. Beyond the high quality and sheer number of his scholarly contributions, Ben exemplifies many additional qualities that speak to his promise for continued leadership in ocean sciences, including his talent as an educator—both within academia and beyond—and as a leader in interdisciplinary science teams. Ben has built a highly successful research group, and he did so at an impressive speed. There is no doubt that Ben already has had a significant impact on coastal science in the United States in terms of training sea level scientists of the future. Ben is also a very talented public speaker, and despite his intense research activity, he devotes an impressive amount of time to outreach, which is an increasingly important role for climate scientists of our generation. Ben has also developed a very strong network of interdisciplinary collaborators and is particularly effective in designing and implementing collaborative research programs that go well beyond his personal areas of expertise and extend worldwide.

I would like to conclude by saying that Ben has emerged as one of the most energetic and productive Quaternary scientists of his generation. His accomplishments as a scholar, educator, and as a citizen of the ocean sciences community make him more than deserving to receive the Voyager Award. Please join me in congratulating Ben on his accomplishments.

—Andrea Dutton, University of Florida, Gainesville



Thank you very much Andrea, and my most sincere thanks to AGU and the Ocean Sciences section for the Voyager award; I am deeply honored. This award recognizes the students, colleagues, and mentors who have always been supportive of me, both professionally and personally, throughout my career.

I would particularly like to thank Andy Plater, who saw my potential as an undergraduate at Liverpool University, and my graduate advisors, Ian Shennan and Antony Long at Durham University, who not only had the most amazing knowledge and understanding of Quaternary Science but were also patient men, allowing me to find my way as I began to understand the theory of sea level change. A decade ago, I moved the United States, where I met a new set of wonderful colleagues. These include Steve Culver, Jeff Donnelly, Alan Nelson, Daria Nikitina, Dick Peltier, and Tor Tornqvist. I also wish to make a special mention of the late Fred Scatena and Orson van de Plassche, whose influence on my scientific career lives on.

I have been very fortunate to work with a number of young, motivated postdoctoral scientists and graduate and undergraduate students, most notably Andy Kemp and Simon Engelhart. These interactions were pivotal in shaping the research questions we ask in the sea level research community. My career has benefited enormously from field meetings and workshops through the International Geoscience Programme and the PALeo-constraints on SEA-level rise (PALsea) working group, by generating open debate and different perspectives on observations, analyses, and interpretations. I am also indebted to colleagues who have helped me become actively engaged at the interface between science and society.

But I would not have received this award if I had not had the support of my family, who remind me every day what matters in life. The final mention goes to my dad, Professor Peter Horton FRS, who is my inspiration.

—Benjamin P. Horton, Rutgers University, New Brunswick, N. J.

Moon Receives 2014 Donald L. Turcotte Award

Woosok Moon was awarded the 2014 Donald L. Turcotte Award, given annually to recent Ph.D. recipients for outstanding dissertation research that contributes directly to the field of nonlinear geophysics.


Moon_Woosok-NG_Turcotte-Award_SIZEDWoosok Moon was awarded the 2014 Donald L. Turcotte Award, given annually to recent Ph.D. recipients for outstanding dissertation research that contributes directly to the field of nonlinear geophysics. He gave an invited talk and was formally presented with the award at the 2014 American Geophysical Union Fall Meeting, held 15–19 December in San Francisco, Calif. Woosok received his B.S. in atmospheric science from Seoul National University in 2000 and a M.Sc. in meteorology from the Pennsylvania State University in 2008. He received a Ph.D. in geophysics under the supervision of J. S. Wettlaufer at Yale University. His research interests include Arctic sea ice thermodynamics, geophysical fluid dynamics, and stochastic dynamical systems applied to climate dynamics.

Aubrecht Receives 2014 Natural Hazards Focus Group Award for Graduate Research

Christoph Aubrecht has been awarded the Natural Hazards Focus Group Award for Graduate Research. This award recognizes a promising young scientist engaged in studies of natural hazards and risks and is given in recognition of outstanding contributions achieved during their Ph.D. (or highest equivalent terminal degree) research. He was formally presented with the award at the 2014 American Geophysical Union Fall Meeting, held 15-19 December in San Francisco, Calif.


Aubrecht_Christoph_NH-Graduate-Research_SIZEDChristoph Aubrecht has a Ph.D. in Integrated Geographic Information (GI) Science and Remote Sensing from Vienna University of Technology and a prior master’s degree from the University of Vienna. He is affiliated as a senior scientific consultant with the AIT Austrian Institute of Technology as well as the World Bank’s Disaster Risk Management team. He previously provided consultancy to the Global Facility for Disaster Reduction and Recovery and held various visiting scientist positions at the National Oceanic and Atmospheric Administration’s National Geophysical Data Center, Columbia University’s Consortium for International Earth Science Information Network, and the attached NASA Socioeconomic Data and Applications Center, as well as the University of Southern California. For several years Chris has been lecturing in GI science and remote sensing at the University of Vienna. He is on the editorial board of various international scientific journals, and his publications include more than 30 refereed articles in journals and books. Research interests focus on multidimensional spatiotemporal modeling as well as disaster risk management, exposure, and vulnerability.

Bruyninx Receives 2014 Ivan I. Mueller Award for Service and Leadership

Carine Bruyninx received the 2014 Ivan I. Mueller Award for Service and Leadership at the 2014 American Geophysical Union Fall Meeting, held 15-19 December in San Francisco, Calif. The award recognizes “major achievements in service and/or leadership to the geodesy community.”


Bruyninx_Carine_Mueller_Award_SIZEDThe Ivan I. Mueller Award for Distinguished Service and Leadership recognizes major achievements in service to and leadership of the geodesy community that go beyond scientific and research contributions. Inspired by the role model of Ivan I. Mueller, an AGU Fellow and Waldo E. Smith Medalist, the award is intended to recognize a body of work that enhances the visibility of geodesy within AGU as well as within the international associated bodies.

We are honored to be invited to write the citation for this year’s recipient of the award, our distinguished colleague Carine Bruyninx of the Royal Observatory of Belgium. Carine was chosen by the international geodetic community to take on the role of network coordinator of the Reference Frame Sub-Commission for Europe (EUREF) Permanent Network (EPN) in 1996. She is broadly recognized for her vision in transforming Global Navigation Satellite System (GNSS) networks for scientific applications. Today, she continues her tireless and skillful service as head of the EPN Central Bureau. By employing rigorous scientific principles, Carine has shown the world how one can develop and actively stimulate the use of common guidelines in a GNSS network involving more than 30 countries. In large part owing to Carine’s efforts, the EPN became a shining example for other networks to follow, and a preeminent pillar in the International GNSS Service (IGS), which has its roots in the vision and leadership of Ivan I. Mueller. The community recognizes Carine’s dedicated service to geodesy through her appointment to the IGS Governing Board, and to other leadership roles within the International Association of Geodesy.

To quote one of the supporting letters, “Dr. Bruyninx has played a major role in enabling and promoting the GNSS transformation. In so doing, she has exemplified par excellence all the qualities of leadership and service that the Mueller Award is intended to recognize.”


—Geoff Blewitt, University of Nevada, Reno, Nevada;
—Véronique Dehant, Royal Observatory of Belgium, Brussels, Belgium; and
—ZUheir Altamimi, Institut Géographique National, Paris, France



Thank you for your kind words. I am extremely honored to receive this award and would like to thank all of those involved in the process.

After finishing my studies in astrophysics at the University of Leuven, faith drove me in the direction of GPS when I was hired at the Royal Observatory of Belgium (ROB) to “integrate Belgium in international terrestrial reference frames.”  We installed permanent GPS stations and integrated one of them in the International GPS (now Global Navigation Satellite System (GNSS)) Service (IGS). I started to attend the meetings of the International Association of Geodesy subcommission for the European Reference frame (EUREF), and when EUREF decided to set up a regional densification of the IGS, I was asked, at the end of 1995, to become the network coordinator. Without fully realizing the consequences, I answered positively. Since that time, my team and I have been responsible for the daily management of the EUREF Permanent Network (EPN). This position has given me the opportunity to interact with a lot of colleagues, to learn from them, and to have interesting discussions on how to upgrade the EPN in response to evolving technological developments, such as real-time data streaming, multi-GNSS, and individual antenna calibrations while maintaining reliable station metadata (my battle horse for many years).

I am fortunate to have worked with numerous colleagues over the years. I would like especially to thank the former director of ROB, Professor P. Pâquet, my mentor in the early years, who will always have my full respect. The discussions with the members of the EUREF Technical Working Group, with whom I’ve worked closely together for 2 decades, were constructive and challenging. Finally, I would like to thank my colleagues within the GNSS research group at ROB: we complement each other, and it is a joy every day again to work with each of you.

—Carine Bruyninx, Royal Observatory of Belgium, Brussels

Gleason Receives 2014 Mineral and Rock Physics Early Career Award

Arianna Gleason received the 2014 Mineral and Rock Physics Early Career Award at the 2014 American Geophysical Union Fall Meeting, held 15–19 December in San Francisco, Calif. The award is for promising young scientists (current Ph.D. students and individuals who have completed the degree requirements for a Ph.D. or highest equivalent terminal degree up to 12 months prior to the nomination deadline) in recognition of outstanding contributions achieved during their Ph.D. research.


Gleason_Arianna-MRP_Early_Career_Award_SIZEDThe American Geophysical Union (AGU) Mineral and Rock Physics Focus Group is pleased to present the first Early Career Award to Arianna Gleason. Following her undergraduate years at the University of Arizona, she was a Consortium for Materials Properties Research in Earth Sciences (COMPRES) intern at the Advanced Light Source of the Lawrence Berkeley National Laboratory in 2004–2005. She received her Ph.D. in 2010 from the University of California at Berkeley under the supervision of Professor Raymond Jeanloz. From 2010 to 2013, Arianna was a postdoctoral scholar at Stanford University working in the research group of Professor Wendy Mao. She is now a research associate at Stanford and the Los Alamos National Laboratory.

Arianna Gleason is an exceptionally bright young researcher working at the cutting edge of multidisciplinary mineral physics. She

is making seminal contributions to two frontiers of high-pressure experimentation: static compression diamond-anvil cell and dynamic compression laser shock measurements. She is conducting pioneering high-pressure mineral physics research using shock compression performed at the Linac Coherent Light Source at the Stanford Linear Accelerator Center, the Jupiter Laser Facility at Livermore National Laboratory, and facilities at Los Alamos National Laboratory. Congratulations, Arianna!

—Bob C. Liebermann, Mineral Physics Institute, Stony Brook University, N. Y.



I am extremely honored to receive this award and grateful to the Mineral and Rock Physics section of AGU for its recognition of my efforts and accomplishments. My interest in mineral physics sprang from an X-ray diffraction project with Professor Bob Downs at the University of Arizona (U of A) on chalcopyrite during my undergraduate studies, and I cultivated a commitment to careful scientific research and discovery with the Spacewatch Project at the Lunar and Planetary Laboratory, U of A. I feel fortunate to have found a field that I am truly excited about and am proud to contribute to planetary sciences and mineral physics.

For my accomplishments in high-pressure research, I owe much gratitude to a number of professors and scientists at the Advanced Light Source, Lawrence Berkeley National Laboratory, the University of California, Berkeley (UCB), and Stanford University for their guidance and support during my graduate and postdoctoral studies. In particular, I am indebted to my Ph.D. advisor, Raymond Jeanloz, at UCB for his invaluable teaching and my inspiring postdoctoral advisor, Wendy Mao, at Stanford University. Progress in mineral physics often relies on a multidisciplinary and collaborative approach; therefore, I am very fortunate to have so many great mentors and enthusiastic and experienced colleagues. In particular, I would like to thank Cindy Bolme at Los Alamos National Laboratory and collaborators in High Energy Density Physics at the Lawrence Livermore National Laboratory, the Matter in Extreme Conditions staff at the Linac Coherent Light Source, SLAC, and staff at the Advanced Photon Source, Argonne National Laboratory. The support from my family and friends has been invaluable to my journey as a scientist—I dedicate this award to my late mother and grandfather.

—Arianna E. Gleason, Los Alamos National Laboratory and SLAC National Laboratory, Stanford University, Menlo Park, Calif.

Geballe Receives 2014 Mineral and Rock Physics Graduate Research Award

Geballe_Zachary-MRP_Graduate-Research_SIZEDZack Geballe and Rebecca Fischer have been awarded the 2014 Mineral and Rock Physics Graduate Research Award. This award is given to one or more promising young scientists in recognition of outstanding contributions achieved during their Ph.D. research. Recipients of this award are engaged in experimental and/or theoretical studies of Earth and planetary materials with the purpose of unraveling the physics and chemistry that govern their origin and physical properties.

Geballe’s thesis is entitled “Melting and freezing of metals under the high pressures of planetary interiors.” Fischer’s thesis is entitled “Earth’s accretion, core formation, and core composition.” They both were formally presented with the award at the 2014 American Geophysical Union Fall Meeting, held 15–19 December in San Francisco, Calif.

Zack Geballe received his B.S. in physics from the University of Michigan Ann Arbor in 2008. In Fall 2014 he completed his Ph.D. in high-pressure mineral physics under the supervision of Raymond Jeanloz at the University of California, Berkeley. His primary research interests are the thermal evolution of the Earth’s core and the physics of melting, freezing, and amorphization.

Fischer Receives 2014 Mineral and Rock Physics Graduate Research Award

Fischer_Rebecca_MRP-Graduate-Research_SIZEDRebecca Fischer and Zack Geballe were awarded the 2014 Mineral and Rock Physics Graduate Research Award, given annually to one or more promising young scientists for outstanding contributions achieved during their Ph.D. research. Recipients of this award are engaged in experimental and/or theoretical studies of Earth and planetary materials with the purpose of unraveling the physics and chemistry that govern their origin and physical properties.

Fischer’s thesis is entitled “Earth’s accretion, core formation, and core composition.” Geballe’s thesis is entitled “Melting and freezing of metals under the high pressures of planetary interiors.” They both were formally presented with the award at the 2014 American Geophysical Union Fall Meeting, held 15–19 December in San Francisco, Calif.

Rebecca Fischer received her B.A. in integrated science and Earth and planetary sciences from Northwestern University in 2009. She is currently working toward a Ph.D. in high-pressure mineral physics under the supervision of Andrew Campbell at the University of Chicago. Her research interests include the compositions of Earth and planetary cores and the physical and chemical processes that determine their compositions.

McKnight Receives 2014 Hydrologic Sciences Award

Diane McKnight received the 2014 Hydrologic Sciences Award at the 2014 American Geophysical Union Fall Meeting, held 15–19 December in San Francisco, Calif. The award is for outstanding contributions to the science of hydrology.


McKnight_Diane-Hydrologic_Sciences_Award_SIZEDIt is an honor for me to introduce the recipient of the 2014 Hydrologic Sciences Award, Diane McKnight. Diane is one of a handful of scientific leaders worldwide at the forefront of studies at the interface between hydrology and biogeochemistry.

Diane is a visionary scientist. One example is her study of the links between natural organic matter and metals in acid mine drainage streams. Her work on the photoreduction of iron in natural streams, published in Science in 1988, remains influential to this date. Another breakthrough came in 2001 when she demonstrated the use of fluorescence spectroscopy to characterize dissolved natural organic matter, work that has influenced essentially the whole field. There obviously is much more—Diane has published about 200 papers in archival journals over her career, and they represent a tremendously substantive body of scientific work.

Diane also is persistent. An anecdote is illustrative. Years ago Diane, Ken Bencala, and I wanted to inject enough dissolved organic carbon in a Colorado stream to trace its fate and transport. After figuring out that it would take about 95 years to leach enough material from leaves, it would have been easy to give up. But Diane had other ideas. She flew to Georgia where she met a tanker truck driver at the Suwannee River. I only wish I had a tape of the conversation that must have occurred. “Let me get this straight. You want me to pump my tank full of swamp water?” Answer: “yes, please.” Suffice it to say that we did the experiment.

Diane also has an enviable record of service; she was President of the American Geophysical Union Biogeosciences section and was the founding editor of Journal of Geophysical Research: Biogeosciences.

The Hydrologic Sciences Award for 2014 is conferred to Diane “for her major contributions to fundamental knowledge of linked hydrologic-biogeochemical processes.”

—George Hornberger, Vanderbuilt University, Nashville


I thank George for his generous comments and my family for their support, especially my husband for his friendship and advice. I am grateful for my association with three institutions with strong commitments to hydrology, the Parsons Laboratory at the Massachusetts Institute of Technology (MIT), the U.S. Geological Survey (USGS), and the University of Colorado. At MIT I benefited from advice from my thesis advisors, Francois Morel and Penny Chisolm, as I planned a study of the CuSO4 treatment of a drinking water reservoir. At the USGS, my career was influenced by a singular event, the eruption of Mount St. Helens. While studying Spirit Lake, I observed how research by USGS scientists had protected the public and advanced understanding the volcano. Since then, I have been fortunate to work with colleagues on continuing, site-based research projects: the USGS’s Toxics Substances Hydrology Program, the McMurdo Dry Valleys and Niwot Ridge Long-Term Ecological Research projects, and the Boulder Creek Critical Zone Observatory. Within these projects, we have conducted stream-scale experiments to probe underlying processes, and I am indebted to many colleagues for the success of this research. Intersecting with these projects has been a quest with environmental chemists to understand the biogeochemistry of dissolved organic matter in streams and lakes.

Finally, I would like to look ahead by considering the past. I am a descendant of James Buchanan Eads, a famous civil engineer who in 1874 built the first steel arched bridge across the Mississippi River. Eads was a national hero. Since that time, we have reshaped the river and changed its chemistry while also changing the climate that will drive the river’s future. Certainly, advances in hydrology will contribute to the security of communities worldwide, but challenges are heroic in scale. I applaud the young scientists of the Hydrology section who will carry the hydrologic sciences forward.

—Diane McKnight, University of Colorado, Boulder