Completed Projects
PI's: David Bryan Dail, University of Maine
Eric A. Davidson, Woods Hole Research Center
Project Title: "Long-term CO2 exchange and biomass measurements in a spruce-hemlock stand near Howland, Maine, supporting regional-scale studies and ecosystem manipulation experiments"
http://howlandforest.org/
http://cdiac.esd.ornl.gov/
PI's: David R. Foster and Julian L. Hadley, Harvard University
Project Title: "Effects of forest age, soil drainage and internanual climate variation on deciduous forest carbon exchange: A comparison to long-term Harvard Forest measurements, in a contrasting forest type"
ftp://ftp.as.harvard.edu/pub/nigec/HU_Wofsy/hf_data/Final
PI's: J. William Munger and Steven C. Wofsy, Harvard University
Project Title: "Long-term response by the carbon budget of a mid-latitude deciduous forest to ecological processes, climate variations, and air pollutants"
All data for carbon pools, carbon fluxes, and atmospheric gas concentrations located at:
http://www.as.harvard.edu/data/nigec-data.html
PI's: Ruth K. Varner, University of New Hampshire and Patrick M. Crill, Stockholm University
Project Title: "High Frequency Measurements of CO2 Efflux from Forest Soil"
http://harvardforest.fas.harvard.edu/data/p06/hf068/hf068.html
Ongoing Projects
PI's: Eric A. Davidson, The Woods Hole Research Center
Susan E. Trumbore, University of California, Irvine
Project Title: "Decadal-Scale Measurements of Decadal-Cycling Forest Soil Carbon"
Research producsts (as appropriate).
Soil respiration data will be updated annually on the Harvard Forest web site:http://harvardforest.fas.harvard.edu/data/p00/hf006/HF006-data.html
Data for radiocarbon measurements (downloadable Excel files) are available at:
https://webfiles.uci.edu/setrumbo/public/NICCR/2006_incubations.xls
https://webfiles.uci.edu/setrumbo/public/NICCR/2006_2007serita_plots.xls
https://webfiles.uci.edu/setrumbo/public/NICCR/2006_2008serita_plotsall.xls
https://webfiles.uci.edu/setrumbo/public/NICCR/summarynwnplot.xls
PI's: Christine L. Goodale, Cornell University, Ithaca NY
Scott C. Ollinger, University of New Hampshire, Durham NH
Project Title: "Effects of Future Changes in Climate and Atmospheric Composition on Forest Ecosystems across the Northeastern U.S.: Model Development, Testing, and Projections"
In support of this project, the suite of PnET models has been rewritten in a 4th generation programming language (MATLAB) in order to facilitate the structural additions proposed in this work and reduce the effort required to produce large spatial simulations and output visualization. PnET has always been a public model and the newly developed code base is available on the website (http://www.pnet.sr.unh.edu).
PI: Paul R. Moorcroft, Harvard University
Project Title: "Impacts of climate variability and change on forest structure, composition, and function in the Northeastern United States"
The ED2 biosphere model code: Following the publication of the manuscript describing the ED2 biosphere model (Medvigy et al. 2009), the model code for the Eastern United States is being released to the scientific community.
High-resolution (1/3 arc second) spatial database of topographic moisture index for the eastern US. This dataset was generated as part of the analysis of how landscape heterogeneity affects patterns of forest dynamics and is being made available to the scientific community.
PI's: J. William Munger, Harvard University
Steven C. Wofsy, Harvard University
Project Title: "Analysis of long-term trends and anomalies in CO2 and H2O exchange at a NE US mixed deciduous forest in response to climate varabilities"
Flux and plot-based biometry data are current at:
ftp://ftp.as.harvard.edu/pub/nigec/HU_Wofsy/hf_data/
ftp://ftp.as.harvard.edu/pub/nigec/HU_Wofsy/hf_data/ecological_data/
During the past year, core data collection has continued successfully. Final quality-checked carbon flux and meteorological data for 2007 has been added to the long term record available at http://www.as.harvard.edu/data/nigec-data.html and submitted to the AmeriFlux data site. Final data for 2008 is iin progress.
PI's: Andrew Richardson (UNH/Harvard University as of July 1, 2009), Eric Davidson (WHRD), and Bryan Dail (U Maine); Unfunded Collaborators: David Hollinger and Paul Schaberg (USDA Forest Service)
Project Title: "Reducing uncertainty about the effects of climatic variation on forest ecosystems by measuring, modeling, and analyzing intermediate-turnover carbon pools"
The following products are available in the /DataArchives/NICCR/ directory on the Howland ftp site, (anonymous login to epg-ftp.umaine.edu).
1) TNC data (9 quarterly collections to date; 6 collections, representing a total of 540 tree cores, have been fully processed and analyzed; see below);
2) Results from the forest floor turnover experiment (three semi-annual collections to date; for first year results, see below);
3) FORTRAN code (for DALEC model parameter optimization, posterior exploration of parameter space, and propagation of uncertainties) developed for use in the REFLEX experiment (and which forms the basis of the Howland inverse modeling conducted to date; see below); and
4) Howland soil CO2 flux data (2005-ongoing; partially funded since 2007 by NICCR).
PI's: J. L. Sarmiento, Princeton University, C. Crevoisier, Princeton University, S. W. Pacala, Princeton University,
D. W. Purves, Princeton University, E. Shevliakova, Princeton University
Project Title: Evaluation of ecosystem carbon dynamics in North America Using Hourly to Decadal Data on Local to Regional Scales
The Shevliakova et al. paper describes the model (LM3V) being used for this grant, which was largely developed at GFDL before this grant was funded but which includes contributions from Crevoisier with support from this grant.
Elena Shevliakova, Stephen W. Pacala, Sergey Malyshev, George C. Hurtt, P.C.D. Milly, John P. Caspersen, Lori Sentman, Christian Wirth, and Cyril Crevoisier, submitted. Carbon cycling under 300 years of land-use changes in the dynamic land model LM3V. Global Biogeochemical Cycles.
In order to avoid discontinuity in the runs at HFM (Harvard Forest) and to achieve consistency in the forcing data among the eight sites, we have decided to use the High-Resolution Global Dataset et al (2006). This data set brings together near surface atmospheric data from reanalysis with the best available observational data to provide an up-to-date and bias-corrected product. The dataset is available for global land areas for 1948-2000 at 3-hourly time interval. The dataset was constructed by combining a suite of global observation-based datasets with the NCEP/NCAR reanalysis.
Sheffield, J., G. Goteti, and E. F. Wood, 2006: Development of a 50-yr high-resolution global dataset of meteorological forcings for land surface modeling, J. Climate, 19 (13), 3088-3111.
