B54C:
New Mechanisms, Feedbacks, and Approaches for Improving Predictions of Global Biogeochemical Cycles in Earth System Models II

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Session ID#: 15279

Session Description:
Predictions of future atmospheric CO2 levels are influenced by global carbon and nutrient cycles, climate interactions, and feedbacks. Relevant processes operate at different spatial and temporal scales and vary across terrestrial, coastal, and marine ecosystems. Uncertain biogeochemical feedbacks may be altered by anthropogenic disturbance agents, including tropospheric O3, acceleration of the N and H2O cycles, eutrophication, and land cover/use change. This session focuses on integrated understanding of feedback mechanisms, methods for evaluating and benchmarking process representations in Earth system models, and approaches for constraining future climate projections (e.g., emergent constraints).
Primary Convener:  Dr. Forrest M Hoffman, PhD, Computational Earth Sciences Group and Climate Change Science Institute, Oak Ridge National Laboratory, Oak Ridge, United States
Conveners:  James Tremper Randerson, University of California Irvine, Earth System Science, Irvine, CA, United States, Atul K Jain, University of Illinois at Urbana Champaign, Urbana, United States and Jefferson Keith Moore, University of California Irvine, Department of Earth System Science, Irvine, CA, United States
Chairs:  Atul K Jain, University of Illinois at Urbana Champaign, Urbana, United States and James Tremper Randerson, University of California Irvine, Earth System Science, Irvine, CA, United States
OSPA Liaison:  Jefferson Keith Moore, University of California Irvine, Department of Earth System Science, Irvine, CA, United States
Co-Organized with:
Ocean Sciences, Atmospheric Sciences, Global Environmental Change, Hydrology, and Ocean Sciences

Cross-Listed:
  • A - Atmospheric Sciences
  • GC - Global Environmental Change
  • H - Hydrology
  • OS - Ocean Sciences

Proposed Co-Organized Session with:
  • A - Atmospheric Sciences
  • GC - Global Environmental Change
  • H - Hydrology
  • OS - Ocean Sciences
Index Terms:

0428 Carbon cycling [BIOGEOSCIENCES]
0439 Ecosystems, structure and dynamics [BIOGEOSCIENCES]
1615 Biogeochemical cycles, processes, and modeling [GLOBAL CHANGE]
1622 Earth system modeling [GLOBAL CHANGE]

Abstracts Submitted to this Session:

Climatological temperature senstivity of soil carbon turnover: Observations, simple scaling models, and ESMs (Invited) (120970)
Charles D Koven, Lawrence Berkeley National Laboratory, Berkeley, CA, United States, Gustaf Hugelius, Stockholm University, Department of Physical Geography, Stockholm, Sweden, David M Lawrence, NSF National Center for Atmospheric Research, Boulder, United States and William R Wieder, National Center for Atmospheric Research, CGD, Boulder, CO, United States
Irreducible Uncertainty in Terrestrial Carbon Projections (122170)
Nicole S Lovenduski, University of Colorado, Department of Atmospheric and Oceanic Sciences, Boulder, CO, United States and Gordon B Bonan, National Center for Atmospheric Research, Climate & Global Dynamics Division, Boulder, CO, United States
Carbon Isotopes in Ocean and Land Carbon Cycle Models: Atmospheric Forcing Data and Applications for CMIP6 and Beyond (Invited) (173369)
Heather D Graven1, Colin E Allison2, David M Etheridge3, Samuel Hammer4, Ralph F Keeling5, Paul B Krummel6, Ray Leonard Langenfelds3, Ingeborg Levin4, Mauro Rubino6, Cathy M Trudinger3, Bruce H Vaughn7 and James W C White8, (1)Imperial College London, Physics, London, SW7, United Kingdom, (2)CSIRO, Centre for Australian Weather and Climate Research, Aspendale, Australia, (3)CSIRO Environment, Aspendale, Australia, (4)University Heidelberg, IUP, Heidelberg, Germany, (5)University of California San Diego, Scripps Institution of Oceanography, La Jolla, CA, United States, (6)CSIRO, Aspendale, Australia, (7)University of Colorado, Institute of Arctic and Alpine Research, Boulder, United States, (8)Univ Colorado, Institute of Arctic and Alpine Research, Boulder, CO, United States
Uncertainty in Terrestrial Carbon Cycle Projections from Data, Model Structure and Representation of Key Processes in a C-N Coupling (177173)
Xuhui Zhou, East China Normal University, Shanghai, China, Zhenggang Du, Center for Global Change and Ecological Forecasting, School of Ecological and Environmental Sciences, East China Normal University, Shanghai, China and Jianyang Xia, East China Normal University, School of Ecological and Environmental Sciences, Shanghai, China
Representing carbon, nitrogen, and phosphorus interaction in the ACME Land Model v1: model development and global benchmarking (180950)
Qing Zhu, Lawrence Berkeley National Laboratory, Climate & Ecosystem Sciences Division, Berkeley, CA, United States, William J Riley, Lawrence Berkeley National Laboratory, Berkeley, CA, United States, Jinyun Tang, Lawrence Berkeley National Laboratory, Climate and Ecosystem Sciences Division, Berkeley, United States, Dr. Forrest M Hoffman, PhD, Oak Ridge National Laboratory, Oak Ridge, TN, United States, Mingquan Mu, University of California Irvine, Department of Earth System Science, Irvine, United States and James Tremper Randerson, University of California Irvine, Earth System Science, Irvine, CA, United States
Unifying Dynamic Prognostic Phenology, Heterogeneous Soil and Vegetation Fluxes, and Ecosystem Biomass and Carbon Stocks To Predict the Terrestrial Carbon Cycle and Land-Atmosphere Exchanges in the Simple Biosphere Model (SiB4) (189176)
Katherine D Haynes, Colorado State University, Atmospheric Sciences, Fort Collins, United States, Ian T Baker, Colorado State University, CIRA, Fort Collins, United States and A Scott Denning, Colorado State University, Department of Atmospheric Science, Fort Collins, CO, United States
Global nitrogen cycling: How widespread are rock nitrogen sources in the terrestrial biosphere? (193276)
Benjamin Z Houlton1, Scott Morford2, Randy A Dahlgren2, Pawlok Dass2 and Scott Allen Mitchell2, (1)University of California Davis, Department of Land, Air and Water Resources, Davis, CA, United States, (2)University of California Davis, Davis, CA, United States
Contstraining CMIP5 simulations of gross carbon fluxes with atmospheric carbonyl sulfide (166269)
J Elliott Campbell, University of California Merced, Merced, United States, Joseph A Berry, Carnegie Institution for Science Washington, Washington, DC, United States, Ulrike Seibt, University of California Los Angeles, Department of Atmospheric and Oceanic Sciences, Los Angeles, United States, Steve J Smith, U.S. Geological Survey, National Civil Application Center, Reston, United States, Stephen A Montzka, NOAA Boulder, Global Monitoring Laboratory, Boulder, CO, United States, Thomas Launois, INRA Bordeaux-Aquitaine, Villenave d'Ornon Cedex, France, Sauveur Belviso, LSCE Laboratoire des Sciences du Climat et de l'Environnement, Gif-Sur-Yvette Cedex, France and Laurent Bopp, Ecole normale supérieure (ENS), Département de Géosciences, Paris, France

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