Week 2 Agenda

Monday 5 August (Fleischmann Building)

08:30-09:25Will Weider, Soil Decomposition

Soils store the largest terrestrial carbon pool, but this critical resource that simultaneously supports agricultural productivity is vulnerable to environmental change. In this lecture we'll explore the importance of and insights into the processes responsible for formation and function of soils.

Suggested reading:
Schmidt, M. W. I., et al., 2011: Persistence of soil organic matter as an ecosystem property. Nature, 478, 49–56, 10.1038/nature10386. {pdf}
09:25–10:25Curtis Deutsch, Hands-on session: Coupled-carbon cycle model
10:45–12:15Curtis Deutsch, Hands-on session: Coupled-carbon cycle model
13:15–14:10Jim Randerson, Fire and climate

This lecture describes the principles by which climate variability and change influence burned area and fire carbon emissions. Potential feedback pathways also will be described, including the role of fires in regulating greenhouse gas and aerosol budgets, nutrient redistribution, and changes in the surface energy budget.

Suggested reading:
Tosca, M.G., J.T. Randerson, and C.S. Zender. 2013. Global impact of contem- porary smoke aerosols from landscape fires on climate and the Hadley circulation. Atmospheric Chemistry and Physics. 13: 5227–5241. 10.5194/acp-13-5227-2013. {pdf}

Rogers, B.M., J.T. Randerson, and G.B. Bonan. 2013. High latitude cooling associated with landscape changes from North American boreal forest fires. Biogeosciences. 10: 699–718. 10.5194/bg-10-699-2013/. {pdf}

Chen, Y., J.T. Randerson, D. C. Morton, R.S. DeFries, G. J. Collatz, P.S. Kasibhatla, L, Giglio, Y. Jin and M. Marlier. 2011. Forecasting fire season severity in South America using sea surface temperature anomalies. Science. 334: 787–791. {pdf}

van der Werf, G.R., J.T. Randerson, L. Giglio, G.J. Collatz, M. Mu, P.S. Kasibhatla, D.C. Morton, R.S. DeFries, Y. Jin, and T.T. van Leeuwen. 2010. Global fire emissions and the contribution of deforestation, savanna, forest, agricultural, and peat fires (19972009). Atmospheric Chemistry and Physics. 10, 11707–11735. {pdf}

Randerson, J.T., H. Liu, M.G. Flanner, S.D. Chambers, Y. Jin, P.G. Hess, G. Pfister, M.C. Mack, K.K. Treseder, L.R. Welp, F.S. Chapin, J.W. Harden, M.L. Goulden, E. Lyons, J.C. Neff, E.A.G. Schuur, C.S. Zender. The impact of boreal forest fire on climate warming. 2006. Science. 314: 1130–1132. {pdf}
14:10–17:30Projects (Fleischmann Bldg)


Tuesday 6 August (ML, Main seminar room)

08:30-09:25Clara Deser, Natural variability in the climate system

Anthropogenic climate change is superimposed on natural variability in the climate system. This lecture introduces key concepts relevant to understanding how internally-generated fluctuations in the climate system affect climate predictions.

Suggested reading:
Deser, C., A. Phillips, V. Bourdette, and H. Teng, 2012: Uncertainty in climate change projections: the role of internal variability. Climate Dynamics, 38, 527–546, 10.1007/s00382-010-0977-x. {pdf}

Deser, C., R. Knutti, S. Solomon, and A. S. Phillips, 2012: Communication of the role of natural variability in future North American climate. Nature Climate Change, 2, 775–779, 10.1038/nclimate1562. {pdf}

Wallace, J. M., C. Deser, B. V. Smoliak, and A. S. Phillips, in review: Attribution of climate change in the presence of internal variability. Climate Change: Multidecadal and Beyond, C. Chang, M. Ghil, M. Latif, and J. M. Wallace, Eds., World Scientific Series on Asia-Pacific Weather and Climate, Vol. 6. {pdf}
09:25–10:20Samuel Levis, Land-use and carbon cycling

An introduction to land-use modeling, including the representation of crops in the Community Land Model.

Suggested reading:
Lawrence, P. J., et al., 2012: Simulating the Biogeochemical and Biogeophysical Impacts of Transient Land Cover Change and Wood Harvest in the Community Climate System Model (CCSM4) from 1850 to 2100. J. Climate, 25, 3071–3095, 10.1175/JCLI-D-11-00256.1. {pdf}
10:40–11:35Jim Randerson, Disturbance and land use change processes: impacts on carbon fluxes in terrestrial ecosystems

Suggested reading:
Luo, Y., Weng, E. Dynamic disequilibrium of the terrestrial carbon cycle under global change. Trends in Ecology and Evolution. Volume: 26 Issue: 2 Pages: 96-104 10.1016/j.tree.2010.11.003. {pdf}

Houghton, RA; House, JI; Pongratz, J; van der Werf, GR; DeFries, RS; Hansen, MC ; Le Quere, C; Ramankutty, N. Carbon emissions from land use and land-cover change. Biogeosciences. Volume: 9 Issue: 12 Pages: 5125-5142, 10.5194/bg-9-5125-2012. {pdf}
11:35–12:30Rosie Fisher, Community dynamics and climate

In models and in the real world, ecosystem function and diversity has huge impacts upon system resilience to climate changes. Despite this, ecological science has (unsurprisingly) produced no consensus on how the complexity of plant life should best be represented. In this lecture we review the existing, emerging and cutting-edge methods for representing ecosystem competition, coexistence and diversity, and discuss the merits and potential biases of alternative approaches.

Suggested reading:
Scheiter, S., L. Langan, and S. I. Higgins, 2013: Next-generation dynamic global vegetation models: learning from community ecology. New Phytologist, 198 (3), 957-969, 10.1111/nph.12210. {pdf}

Bonan, G. B., S. Levis, S. Sitch, M. Vertenstein, and K. W. Oleson, 2003: A dynamic global vegetation model for use with climate models: concepts and description of simulated vegetation dynamics. Global Change Biology, 9 (11), 1543-1566, 10.1046/j.1365-2486.2003.00681.x. {pdf}

Fisher, R., et al., 2010: Assessing uncertainties in a second-generation dynamic vegetation model caused by ecological scale limitations. New Phytologist, 187 (3), 666-681, 10.1111/j.1469-8137.2010.03340.x. {pdf}
13:30–16:00Project time and proposal presentations



Key Uncertainties in the Global Carbon-cycle: Perspectives across terrestrial and ocean ecosystems

ASP Researcher Workshop [US-CLIVAR Page Info on Researcher Workshop]

Tuesday 6 August

19:30Introduction of organizers and objectives of the workshop

Wednesday 7 August

08:00Quinn Thomas, Welcome

Carbon Cycle Overview

08:15Jim Randerson, UC Irvine, The state of the carbon cycle in CMIP5 models: Processes, feedbacks, and future research directions
09:15Ning Zeng, Univ. of Marylyand, The changing cycle of atmospheric CO2
10:15Coffee break
10:45Taka Ito, Georgia Institute of Technology, Physical and biological controls on the ocean carbon storage
11:45Ying Ping Wang, CSIRO, Effects of nutrient limitation on land carbon uptake and its implications on climate change prediction and mitigation
13:45Phillipe Ciais, IPSL-LSCE, Challenges in soil carbon modeling and links to the river carbon cycle

Nutrient cycling controls and impacts on carbon cycling

14:45Curtis Deutsch, Univ. of Washington, Climate regulation of the oceanic N cycle
15:45Coffee break
16:15Sara Vicca, University of Antwerp, Nutrient availability determines forests' carbon sequestration - a global synthesis
16:55Anna Cabre, Univ. of Pennsylvania, Southern Ocean response to climate change in the CMIP5 models
17:35Poster Session I:
  • Remineralization and nutrient cycling controls
  • Carbon cycle I - CMIP5 and continental to global carbon flux estimates

Thursday 8 August

Remineralization pathways and controls

08:00Adrian Burd, Univ. of Georgia, The fate of particulate organic material in the oceans
09:00Serita Frey, Univ. of New Hampshire, Terrestrial Ecosystem Carbon Dynamics: Effects of Heterotrophic Respiration
10:00Coffee break
10:30Christian Lonborg, Swansea University, Dissolved organic matter (DOM) - microbe interactions
11:10Tom Vanwalleghem, Univ. of Cordoba, Towards modeling global soil erosion and its importance for the terrestrial carbon cycle

Role of individuals in ecosystem dynamics

13:00Rosie Fisher, NCAR, Competition, co-existence and diversity in vegetation models
14:00Tim Lenton, Univ. of Exeter, Capturing evolution and ecology in a global ocean model
15:00Sophie Fauset, Univ. of Leeds, Modeling tropical forest dynamics using an individual-based forest simulator
15:40Coffee break
16:10David Nicholson, WHOI, A cellular allocation modeling approach for representing the ecophysiology of marine primary producers
16:50Breakout groups to plan out synthesis paper (1 group per paper section, students as note takers)
19:00Group reception/dinner

Friday 9 August

Data to constrain carbon cycle feedbacks: assimilation, metrics, parameter estimation, inverse methods etc.

08:00Galen McKinley, Univ. of Wisconsin-Madison, Using data to elucidate feedback mechanisms in the ocean carbon cycle
09:00Kevin Bowman, JPL, The NASA Carbon Monitoring System
09:40Kiona Ogle, Arizona State Univ., Strategies for applying individual-based models of forest dynamics at regional to continental scales
10:40Coffee break

Role of physical climate variability

11:00Jeff Chambers, LBNL, Tree mortality and forest-atmosphere interactions under a warming climate
12:00Charles Koven, LBNL, Modeling terrestrial carbon-climate dynamics in the northern high latitudes
13:40Nicole Lovenduski, Univ. of Colorado-BoulderCarbon in the Southern Ocean: Known knowns and known unknowns
14:40Rondrotiana Barimalala, Georgia Institute of Technology, Representation of the Indian Ocean biophysical interannual variability in the CMIP5-ESM models
15:20Coffee break

Ecosystem dynamics new horizons

15:40Tom Anderson, University of Southampton, Role of zooplankton in marine ecosystems and modeling perspectives
16:40Jeff Hicke, Univ. of Idaho, The role of biotic disturbance agents in carbon-climate connections
17:40Poster session II:
  • Carbon cycle II - local processes and regional flux estimates
  • New modeling approaches and the use of data to constrain carbon cycle feedbacks


Saturday 10 August

08:30Breakout groups
10:30Planning next steps
11:30Concluding remarks