The 2017 AGU Fall Meeting will be held at the New Orleans Ernest N. Morial Convention Center in New Orleans, Louisiana on December 11-15, 2017.
Find a list of CZ science-related sessions below. Check back on this page to find more information on CZO events at AGU as more information becomes available!
Please consider submitting a regular abstract as well as an extra abstract to a Public Affairs sessions on science communication with policymakers (PA013, details below).
You can submit 1-3 abstracts as per the AGU Submission Limit Policy:
"First Authors can have a maximum of one (1) contributed and one (1) invited abstract, or two (2) invited abstracts. The only exemption to this policy is the submission of one (1) additional contributed abstract to an Education (ED) or Public Affairs (PA) session.”
PUBLIC AFFAIRS SESSION PA013. "How Does Your Geoscience Research Matter and Can You Explain How it Matters to the Public?" Researchers from different disciplines and career levels will present and discuss “science communication with policymakers” via 5 minute talks and posters (prepared for policymakers and the public).
Session ID#: 23702
Session Description: Process-level prediction of critical zone (CZ) structure and long-term evolution depends on an improved understanding of how hydrologic flows and biogeochemical reactions are coupled on the incremental time scale of hydrologic events. Hydro-bio-geochemical couplings can be inferred from solute releases measured down-gradient of reactive flow paths. These flow paths have variable lengths, compositions, and residence times, and their mixing is reflected in concentration-discharge (C-Q) relations. We invite contributions that seek to resolve mechanisms operating within the CZ (from canopy to bedrock) that control down-gradient C-Q behavior. Focus of the session spans the full range of rock-derived and bio-active solutes, including dissolved, gaseous and colloidal species that may co-occur for a given element. Papers that incorporate observations of internal catchment function (e.g., dynamic relations among hydrology and (bio)geochemistry in various CZ locations) to interpret controls over integrated C/Q response are especially encouraged.
Primary Convener: Jon Chorover, University of Arizona, Tucson, AZ, United States
Conveners: Jerome Gaillardet, Institut de Physique du Globe de Paris, Paris, France, William H McDowell, University of New Hampshire Main Campus, Durham, NH, United States and Jennifer L Druhan, University of Illinois at Urbana Champaign, Urbana, IL, United States
Session ID#: 25520
Session Description: Microbes play critical roles regulating biogeochemical cycles. Linking processes controlling nutrient transformation and storage with disturbance responses and feedbacks to climate change is a global research priority. Studies that integrate biogeochemical approaches focused on nutrient pools and fluxes with microbial ecology approaches examining community physiology, traits, and structure reveal the complexity of interactions influencing ecosystem responses. How do individual microbial traits influence community stability and response to disturbances? How does microbial community structure change across gradients and influence vegetation dynamics? How can we use this information to predict large-scale fluctuations in soil carbon and nutrient storage? Although advances in molecular and genetic tools are improving our understanding of how microbial processes influence ecosystem scale cycles, questions surrounding the level of detail appropriate to best predict environmental response to change remain. We invite cross-disciplinary studies that investigate microbial-driven responses along environmental gradients, to disturbance, and/or in the context of climate change.
Primary Convener: Martha Gebhardt, University of Arizona, Tucson, AZ, United States
Conveners: Noelle J Espinosa1, Dawson Fairbanks2 and Rachel E Gallery2, (1)University of Arizona, Tucson, AZ, United States (2)University of Arizona, Soil, Water and Environmental Science, Tucson, AZ, United States
Session ID#: 25314
Session Description: Effective research in the geosciences requires a combination of discovering, analyzing, managing, and publishing data. Community platforms and data tools are being developed to aid researchers, students, and educators in accomplishing these tasks so that they can better focus their efforts on addressing current scientific issues. Many tools are available online and can be accessed through services, thus creating Virtual Research Environments that enhance the sharing of data and tools. We solicit contributions that discuss successes and challenges in developing tools, applications, and platforms that enable data discovery, data sharing and publishing, and data management to support the next generation of research in geosciences.
Primary Convener: Liza Brazil, Consortium of Universities for the Advancement of Hydrological Science, Washington, DC, United States
Conveners: Megan Carter, Columbia University of New York, Palisades, NY, United States, Jon Pollak, Consortium of Universities for the Advancement of Hydrological Science, Washington, DC, United States and Michelle Hall, Science Education Solutions, Los Alamos, NM, United States
Session ID#: 26088
Session Description: Shale comprises 25% of earth's surface and yet its chemical, mechanical, physical, and transport properties are only poorly understood. A transformation in our understanding of this important lithology is ongoing, largely driven by the shale gas revolution and new critical zone science initiatives. This session will highlight presentations about all aspects of shale spanning from studies at depth related to fracking and horizontal drilling to studies at or near earth's surface related to shales as aquicludes, shales in the critical zone, and shales as hosts for microbiological ecosystems.
Primary Convener: Susan L Brantley, Pennsylvania State University Main Campus, Department of Geosciences, University Park, PA, United States
Conveners: Carl I Steefel, Lawrence Berkeley National Laboratory, Berkeley, CA, United States, Xin Gu, Pennsylvania State University Main Campus, University Park, PA, United States and Qingyun Li, Stanford University, Department of Geological Sciences, Stanford, CA, United States
Session ID#: 26021
Session Description: Over a decade of Critical Zone research suggests that landscape evolution is controlled by processes ranging from tectonic forces to energy fluxes associated with solar radiation and precipitation. These processes drive the generation of porosity through fracturing, mineral dissolution, and bioturbation. Porosity is essential to many life sustaining features of the critical zone and functions to provide organisms access to key nutrients, pathways for throughflow of meteoric and subsurface water, exposes surface area for chemical dissolution and mineral weathering, and allows for the entrainment and transport of particulates. Variations in porosity dictate critical zone architecture both spatially (vertically and laterally) and temporally. Our session aims to bring together a cross section of scientists working to integrate measurements from geophysics, geochemistry, hydrology, and ecology to elucidate porosity structure in the critical zone, and its correlation with physical, chemical, and biological processes.
Primary Convener: Nicole West, Central Michigan University, Mount Pleasant, MI, United States
Conveners: Jorden L Hayes, Dickinson College, Department of Earth Sciences, Carlisle, PA, United States and Jason Austin, University of Georgia, Athens, GA, United States
Session ID#: 26345
Session Description: For decades, stable, radioactive and radiogenic isotopes, trace element and noble gas distributions have been utilized within the hydrologic sciences to quantify subsurface flow paths, sources, residence times and reactive processes. With recent advancements in analytical technology, these characterization methods are now rapidly expanding into novel mid-mass isotopic systems, as well as fostering unique interpretations of traditional tracers. This unprecedented new analytical capability now requires the development of revised interpretation, data analysis, and modeling approaches. These advances are currently fostering new insights into the linkages between surface and subsurface hydrology, ecohydrology, environmental and resource sustainability, nutrient and contaminant hydrology and associated predictive models. In the current session, we invite submissions across a diversity of tracer applications, emphasizing new methods of hydrologic system characterization using isotopic, trace element and noble gas analysis in field systems, laboratory experiments and models
Primary Convener: Jennifer L Druhan, University of Illinois at Urbana Champaign, Urbana, IL, United States
Convener: Daniella Rempe, University of Texas at Austin, Jackson School of Geosciences, Department of Geological Science, Austin, TX, United States
Session ID#: 27149
Session Description: Long-term research catchments are sentinel sites that have proved invaluable for detecting, documenting, and understanding environmental change. The small watershed approach fosters hydrological, biogeochemical, and ecological process understanding at a site, while a collective network of catchment observatories offers a broader context to synthesize understanding across a range of climate and geology. Also, experimental manipulations designed to assess the effects of land management and climate change are more readily interpreted in well-understood systems. Multi-catchment comparisons at various temporal and spatial scales provide information needed to manage ecosystems, and to inform hydrological or Earth systems models. In this session, we seek contributions from observatory, long-term, and experimental catchment studies that include analysis of processes and temporal trends. We especially encourage submissions that illustrate the societal relevance of catchment science.
Primary Convener: James B Shanley, U.S. Geological Survey, Montpelier, VT, United States
Conveners: Stephen D Sebestyen, US Forest Service, Northern Research Station, Grand Rapids, MN, United States and Jonathan M Duncan, Pennsylvania State University Main Campus, University Park, PA, United States
Session ID#: 29401
Session Description: The strong coupling between biogeochemical processes and hydrological flow and transport in permafrost environments is an important consideration for developing an integrated understanding of carbon and nutrient turnover and mobilization (including hydrologically driven imports and exports). Disturbances such as permafrost degradation and wildfire make an integrated understanding even more necessary, because disturbance can impose strong feedbacks between biogeochemical, hydrological, geomorphological, and plant processes. This session intends to bring together researchers involved with biogeochemical and hydrological studies in permafrost-affected systems to examine the breadth of critical zone function and to explore how coupled processes control spatial- and temporal-variability from micro-topographic to watershed scales. Studies that examine how hydrological flow and transport characteristics affect biogeochemical cycling are especially welcome.
Primary Convener: Joshua C Koch, USGS Alaska Science Center, Anchorage, AK, United States
Conveners: Ylva Sjöberg, Stockholm University, Stockholm, Sweden; USGS Alaska Science Center, Anchorage, AK, United States, David E Graham, Oak Ridge National Laboratory, Biosciences Division, Oak Ridge, TN, United States and Jeffrey M Heikoop, Los Alamos National Laboratory, Earth and Environmental Sciences, Los Alamos, NM, United States
Session ID#: 25667
Session Description: As technology continues to advance, our ability to image earth’s critical zone only increases. One of the newest tools available for collecting spatially explicit data are unmanned aerial vehicles (UAVs), also known as drones. UAVs are unique tools that offer reliable data collection at high spatial resolutions. They can provide insight into the spatial heterogeneities in vegetation, land use, and surface waters, and critical zone processes, and help ground truth results of water system models. This session invites contributions that explore the use of UAVs in advancing our understanding of critical zone hydrology. Contributions on types of UAVs, data collection techniques, inferring hydrological processes from UAV data, and use of UAVs to run or refine numerical models are particularly encouraged.
Primary Convener: Christa Kelleher, Syracuse University, Syracuse, NY, United States
Conveners: Anna Coles, University of Saskatchewan, Saskatoon, SK, Canada and Christine E. Hatch, University of Massachusetts Amherst, Department of Geosciences, Amherst, MA, United States
Session ID#: 22642
Session Description: Coupled with flow, biogeochemical reactions play a pivotal role in shaping the Earth’s shallow subsurface. Hydrogeophysical methods can be attractive for improved characterization and monitoring of the reactive transport processes in porous media because of their capability to provide spatiotemporal data at large scales. When coupled with traditional biogeochemical approaches and modeling, hydrogeophysical methods can play a unique role in improving our understanding of the reactive transport processes. While great potential exists, the application of geophysical methods can be challenging. Often times, interpretation can be challenging due to non-unique correlations between the geophysical attributes and the parameters of interest. This session invites laboratory, field, and numerical studies investigating reactive transport processes using geophysical methods. Examples include critical zone processes, hydrobiogeochemical dynamics at interfaces, soil and groundwater remediation, as well as geotechnical and geoengineering applications. We are specifically interested in studies combining hydrogeophysics with reactive transport modeling and traditional biogeochemical methods.
Primary Convener: Yuxin Wu, Lawrence Berkeley National Laboratory, Berkeley, CA, United States
Convener: Chi Zhang, University of Kansas, Department of Geology, Lawrence, KS, United States
Session ID#: 25010
Session Description: Extending from the bottom of the weathered bedrock to the top of canopy, the critical zone as a whole harbors many hydrological stores and pathways relevant to earth system functioning at sub-decadal time scales. This multi-layered “living skin of the Earth” is highly heterogeneous both horizontally and vertically; scaling up local insights into an integrated mechanistic understanding of this interface between the atmosphere, the oceans and Earth’s interior remains challenging. This session collects contributions using modelling- and/or measurement-based analyses spanning local-to-global scales to 1) quantify hydrological fluxes and residence times within the critical zone, and 2) provide insights into couplings and feedbacks with climate seasonal dynamics and short-term variability, ecosystem functioning, and geochemical cycling.
Primary Convener: Sylvain Kuppel, University of Aberdeen, Aberdeen, United Kingdom
Conveners: Scott Jasechko, University of Calgary, Geography, Calgary, AB, Canada, Gonzalo Miguez-Macho, University of Santiago de Compostela, Santiago de Compostela, Spain and Kaiyu Guan, University of Illinois at Urbana Champaign, Department of Natural Resources and Environmental Sciences, Urbana, IL, United States
Session ID#: 23926
Session Description: The current understanding of the critical zone is limited by our observational capacity. Natural systems are the integrated result of interactions among water, microbes, plants, and porous geological media over wide spatial and temporal scales that are difficult to reproduce in the laboratory and resolve in the field. Large-scale model systems and controlled experimental facilities bridge the laboratory and field scale and have the potential to yield critical insights into complex terrestrial ecosystem processes.
This session will be of interest to the growing scientific community using large-scale model systems to understand pore- to landscape-scale biogeochemical and hydrological processes. We expect contributions on 1) experimental infrastructure description; 2) experimentation and hypothesis testing; 3) extrapolation to real world; and 4) questions that potentially can be answered using terrestrial ecosystem research infrastructures. This session will facilitate discussion of the unique technical challenges of these facilities and breakthroughs in their application for interdisciplinary investigation.
Primary Convener: Laura K Meredith, University of Arizona, School of Natural Resources and the Environment, Tucson, AZ, United States
Conveners: Antonio Alves Meira Neto, University of Arizona, Tucson, AZ, United States, Werner Gerwin, BTU Cottbus, Cottbus, Germany and Greg Barron-Gafford, University of Arizona, Biosphere 2, Tucson, AZ, United States
Session ID#: 26151
Session Description: The biogeochemical functioning of soils and sediments is linked to interconnected physical, chemical and microbial processes, which are modulated by environmental and climatic drivers on a wide range of temporal and spatial scales. Understanding the response of soil and sediment biogeochemistry to environmental changes is greatly enhanced by using integrative approaches that combine characterization of multidisciplinary aspects of the system studied. Technological developments have led to the availability of sophisticated sensors, automated monitoring systems and sample characterization methods that can capture a wide range of parameters under dynamic conditions ( e.g., wetting and drying, flooding, freezing and thawing, groundwater-surface water interactions and flow regimes). This session facilitates in-depth exchanges of concepts, data, measurement techniques, and modelling approaches. We particularly welcome presentations on the role of coupled biogeochemical processes in the subsurface environment, and the responses of microbial communities, carbon and nutrient fluxes, and turnover of organic matter under dynamic conditions.
Primary Convener: Geertje Johanna Pronk, University of Waterloo, Department of Earth and Environmental Sciences, Waterloo, ON, Canada
Conveners: Fereidoun Rezanezhad, University of Waterloo, Department of Earth and Environmental Sciences, Waterloo, ON, Canada and Philippe Van Cappellen, University of Waterloo, Department of Earth and Environmental Sciences, Waterloo, ON, Canada
Session ID#: 25282
Session Description: Soil carbon is a key component of biogeochemical feedbacks within ecosystems, as well as climate feedbacks on regional to global scales. Soil carbon dynamics are often studied on fine spatiotemporal scales but the climate implications of these dynamics are typically on coarse scales. Thus, a critical challenge in soil carbon science is to scale process-level understanding to management- or climate-relevant applications.
This session welcomes contributions that focus on broad-scale soil carbon dynamics (regional to global or decadal to millennial scales). We invite empirical, modeling, meta-analytical or review studies as well as studies harnessing ‘big data’ in soil carbon science, including those using data from research networks such as International Soil Carbon Network (ISCN), Critical Zone Observatory Network (CZON), National Ecological Observatory Network (NEON), etc. We also welcome contributions bridging mechanistic understanding of soil carbon to broad-scale applications such as soil health, management best practices, climate mitigation, etc.
Primary Convener: Avni Malhotra, Oak Ridge National Laboratory, Oak Ridge, TN, United States
Conveners: Timothy R Filley, Purdue University, Earth, Atmospheric, and Planetary Sciences, West Lafayette, IN, United States, Asmeret Asefaw Berhe, University of California Merced, Merced, CA, United States and Jennifer W Harden, USGS Geological Survey, Menlo Park, CA, United States; Stanford University, Earth System Science, Stanford, CA, United States
Session ID#: 23400
Session Description: The Critical Zone (CZ) is the Earth’s skin where climate, geology, ecosystems, and human activities converge. The evolution and function of the CZ are governed by multiple processes (e.g., meteorological, hydrological, geochemical, geomorphological, and biological) over a wide range of temporal and spatial scales. This session aims to showcase contributions that highlight recent model development and applications to develop a predictive understanding of CZ. We invite abstracts that: 1) demonstrate the synergy between field and modeling efforts; 2) elucidate underlying processes at and across multiple scales; 3) reveal new understanding about the CZ response to changing climate and land use; and 4) synthesize data or test hypotheses across multiple study sites. The session is intended to serve as an exploration of the breadth of CZ sciences and to facilitate comparison across different sites. We encourage submissions from modeling endeavors within and across disciplines.
Primary Convener: Li Li, Pennsylvania State University Main Campus, University Park, PA, United States
Conveners: Harry Vereecken, Forschungszentrum Julich GmbH, Julich, Germany, Praveen Kumar, University of Illinois at Urbana Champaign, Urbana, IL, United States and Bhavna Arora, Lawrence Berkeley National Laboratory, Berkeley, CA, United States
Session ID#: 24933
Session Description: The critical zone (CZ) – Earth's permeable veneer from the tops of trees to the bottom of groundwater aquifers – is a constantly evolving layer where rock, soil, water, air, and living organisms interact, regulating habitats and determining the availability of life-sustaining resources, including food production and water quality. Like an elaborate piece of industrial machinery, plants build the CZ by altering the physical architecture and chemistry of the subsurface. Like a complex network of pipes, plants plumb the CZ by impacting reservoirs and pathways of water and nutrients. We solicit contributions that explore plants’ effects on the CZ and the CZ’s effects on plants. We are interested in abstracts contributing to understanding the evolving relationships of plants and the CZ over multiple timescales: (1) complex plant-CZ relationships that regulate the flows of energy, water, carbon and nutrients and (2) how plant-CZ interactions and organization shape landscapes and sculpt soils.
Primary Convener: Jaivime A Evaristo, University of Saskatchewan, Saskatoon, SK, Canada
Conveners: Shirley A Papuga, University of Arizona, Tucson, AZ, United States, Diana L Karwan, University of Minnesota Twin Cities, Minneapolis, MN, United States and Kathleen A Lohse, Idaho State University, Biological Sciences, Pocatello, ID, United States
Session ID#: 29367
Session Description: Land-use and land cover change have the potential to drastically alter the hydrologic cycle and alter the spatiotemporal movements of water resources. The emerging challenges of land system changes from a natural resource perspective are (1) Observing/estimating land-use and land-cover change and (2) Quantifying/predicting subsequent hydrologic impacts. This session invites submissions that use emerging geospatial techniques such as remote sensing, modeling, assimilation of observed vegetation characteristics, and in situ observations like isotopes. Studies are welcomed that quantify hydrologically-relevant landscape change and/or examine land-use and land-cover impacts on: (i) Regional water balance/water resource change; (ii) groundwater resources/groundwater-surface water interactions; (iii) Subsurface-land-atmosphere feedbacks; (iv) Regional climate/drought characteristics; (v) Hydro-chemical fluxes and nutrient cycling. We also welcome studies exploring disturbance from natural versus anthropogenic sources and those dealing with uncertainty in selection of land cover datasets, statistical methods, or numerical modeling.
Primary Convener: Ben Livneh, Cooperative Institute for Research in Environmental Sciences, Boulder, CO, United States
Conveners: Samuel Carl Zipper, McGill University, Earth & Planetary Sciences, Montreal, QC, Canada, Shraddhanand Shukla, University of California Santa Barbara, Santa Barbara, CA, United States and Laura E Condon, Syracuse University, Civil and Environmental Engineering, Syracuse, NY, United States
Session ID#: 24142
Session Description: You have five minutes to explain to a non-geoscientist what you do, what discoveries you have made and why it matters. Are you ready to do this with a presentation or without? This session seeks brief and easy to understand descriptions via posters or lightning talks for outreach to the public and stakeholders, such as policymakers, emergency managers and/or others. There are no restrictions on your choice of words or images, but the presentation should include some description about why the geoscience has value and what that value is.
Primary Convener: Linda R Rowan, UNAVCO, Inc. Boulder, Boulder, CO, United States
Conveners: Maggie L Walser, National Academy of Science, Washington, DC, United States and Rebecca French, Environmental Protection Agency Washington DC, Washington, DC, United States
05 Jul 2017 - Southern Sierra CZO Principal Investigator, Roger Bales, was named the 2017 John F. Nye Lecturer from the AGU Cryosphere Focus Group.
03 Jul 2017 - Ravindra Dwivedi received the prestigious 2017 AGU Horton Research Grant to support his CZO work in the Santa Catalina Mountains.