General Site Information
LaThuid:US-Ha1
Site Name:Harvard Forest EMS Tower (HFR1)
Network:AmeriFlux
Sec. Network(s):Unknown
Latitude:42.5378
Longitude:-72.1715
Elevation(m):340
IGBP:DBF
Description
Site Citation:Urbanski, S., C. Barford, S. Wofsy, C. Kucharik, E. Pyle, J. Budney, K. McKain, D. Fitzjarrald, M. Czikowsky, and J. W. Munger (2007), Factors controlling CO2 exchange on timescales from hourly to decadal at Harvard Forest, J. Geophys. Res., 112, G02020, doi:10.1029/2006JG000293.
Site Acknowledgment:
Data Usage Note:TBA
Primary Contact:Bill Munger
Curator:Tom Boden
Anc Curator:Tom Boden
Years Of Data:16 (Duration: 1991 - 2006)
Tower Status:Active (1991 - Present)
Site image(s):Image
VE Cutouts:Max Zoom :: Mid 1 Zoom :: Mid 2 Zoom :: Min Zoom

Fluxnet Research Proposals Using this Site
CoordinatorTitleCollaboratorsTopic
Sonia SeneviratneMulti-scale land-atmosphere interactionsSeneviratne; Reichstein; Ciais; Buchmann; StockliBiophysical feedbacks, Drought effects
Sebastiaan LuyssaertShort term extremes in NEE: drivers and responses in natural ecosystemsLuyssaert; Hollinger; Munger; Stoy; Archibald; Buchmann; Williams; JanssensTemporal variability; extremes
Barbara KoestnerWater vapour flux partitioning related to climate, global ecosystem types and vegetation structureKoestner; Bernhofer; Knohl; LindrothH2O
Timothy W. HiltonWhat is the spatial and temporal coherence of flux tower signalsHilton; Davis; Ciais; DesaiUp-scaling, regional, process-oriented
Alan BarrSynthesis of Inter-Annual Variability in Net Ecosystem Exchange at Long-Term North American Mature Boreal and North-Temperate Forest Flux-Tower SitesBarr;Black;Wofsy;Hollinger;IAV, Boreal
Dennis BaldocchiMeasuring Terrestrial Biosphere Metabolism with a Global Flux NetworkBaldocchi;Reichstein;Papale;LawGlobalSummary
Christopher A. WilliamsCarbon Dioxide and Water Flux Responses to Extreme Weather and Climate AnomaliesWilliams; Munger; Hollinger; Stoy; Richardson; Schaefer; Stockli; SchwalmTemporal variability; extremes
Christian BernhoferAnalyzing long-term FLUXNET measurements for reliable ET values across ecosystems types and across climatic regionsBernhofer; Koestner; Knohl; Lindroth; Grünwald; RiedelH2O
Andrew RichardsonEffect of spring onset and autumn senescence date on forest-atmosphere CO2 exchangeRichardson;Piao;Ciais;BreonPhenology; growing season
Andrew RichardsonExploring relationships among carbon exchange, foliar nitrogen, and canopy albedo at global scalesRichardson; Ollinger; Martin; Hollinger
Gitta LasslopExtended hyperbolic light response curve including VPD effects to derive GPP estimates mainly based on daytime dataLasslop; Reichstein; Papale
Chuixiang YiClimate control of terrestrial carbon sequestrationYi; Ricciuto; Monson
Andrew JarvisA data-based cross-site evaluation of (optimal) carbon gain and water use strategies as expressed in FLUXNET eddy covariance dataJarvis;StauchC-H2O
Mirco MigliavaccaSemi-empirical modelling of ecosystem respiration: review, improved algorithm and integration with Earth observation dataMigliavacca; Reichstein; Richardson; LasslopEcosytem respiration; spatio-temporal
ShiLong PiaoEffect of snow change on the C balance in various northern ecosystemsPiao;Ciais;Reichstein;LuyssaertSnow effects; Boreal-Tundra
Christian BeerUpscaling mean annual GPP from ecosystem level to the global land surfaceBeer; Tomelleri; Reichstein; Carvalhais; Jung; Papale; Peylin; Ciais
Philippe CiaisWhat the eddy-covariance flux measurements tell us about prior errors in CO2-flux inversion schemesChevallier; Ciais; Maignan; Wang; Reichstein
Martin JungIdentifying environmental and biophysical controls of monthly carbon and water fluxesJung; Reichstein; Papale; Tomelleri
Enrico TomelleriClimatic effects on the inter‐annual variability of net ecosystem fluxes of North America and EuropeTomelleri; Migliavacca; Carvalhais
Dario PapaleA new global spatialized estimate of NEP, GPP and TER and analysis of uncertainty and limiting factors using data driven models and eddy covariance measurementsPapale, Reichstein, TomelleriUp-scaling, global, data-oriented

Local Climate Information
Climate:Dfb
Climate Group:Temperate-Continental with hot or warm summers
Precip:1071
TA(C):6.62
TA(C) max:12.73
TA(C) min:0.47

Instrument Information
InstrumentsBrand/modelLevels/depthsTypeFrequencyCommentReference
(Other)30 mNoy (catalyst to NO)Ameriflux web page
AG_BIOMASS_STShrubs are 1-10 cm DBH. For methods description see ftp.as.harvard.edu/pub/nigec/HU_Wofsy/hf_data/ecological_data
AG_BIOMASS_TWTrees are ò10 cm DBH. For methods description see ftp.as.harvard.edu/pub/nigec/HU_Wofsy/hf_data/ecological_data
AG_PROD_TWTrees are ò10 cm DBH. For methods description see ftp.as.harvard.edu/pub/nigec/HU_Wofsy/hf_data/ecological_data.
AnemometerATI: K-probe upgradesonicHank Loescher, February 2005
Chemiluminescent analyser.05,1,3,6,12,18,24,30 mAmeriflux web page
30 mAmeriflux web page
CR_BIOMASSCoarse and fine root data obtained from soil cores from control plots of DIRT Project; source: DIRT Project ; contact Knute Nadlehoffer (knute@umich.edu)
FR_BIOMASSFine root data obtained from soil cores from control plots of DIRT Project; source: DIRT Project ; contact Knute Nadlehoffer (knute@umich.edu)
Gas AnalyzerLI-COR: LI-6262CO2/H2O, infraredHank Loescher, February 2005
NEPSee Barford et al. 2001 for components of budget which yields NEP estimate. Annual CWD respiration estimates derived from a site-specific linear regression model which uses air temperature and decay class; see O'Donnell, 2007, senior thesis, Harvard University for specific details.
Radiometer30 mMultifilter rotating shadowband; Incident and reflected total, diffuse, and direct-beam solar radiation in 6 10-nm wide wavebandsAmeriflux web page
REBS: Q*6netHank Loescher, February 2005
RT_BIOMASSCoarse and fine root data obtained from soil cores from control plots of DIRT Project; source: DIRT Project ; contact Knute Nadlehoffer (knute@umich.edu)
Thermistorsurface (6 reps), 20 cm, 50 cmAmeriflux web page

Publications
Bibliography
Barford et al 2001;
Foster and Aber eds, Forests in Time, 2004
Urbanski et al 2007;
Wofsy et al. 1993, Science 260: 1314.
Barford et al. 2001, Science 294: 1688.
Urbanski et al. 2007, JGR 112: G02020.
Foster and Aber, eds. Forests In Time.
A. D. Richardson; D. Y. Hollinger; G. G. Burba; K. J. Davis; L. B. Flanagan; G. G. Katul; J. W. Munger; D. M. Ricciuto; P. C. Stoy; A. E. Suyker; S. B. Verma; S. C. Wofsy. 2006. A multi-site analysis of random error in tower-based measurements of carbon and energy fluxesAgricultural and Forest Meteorology. 136:1-2, 1-18.
C. V. Horii; J. W. Munger; S. C. Wofsy; M. Zahniser; D. Nelson; J. B. McManus. 2006. Atmospheric reactive nitrogen concentration and flux budgets at a Northeastern U. S. forest siteAgricultural and Forest Meteorology. 136:3-4, 159-174.
K. A. Hibbard; B. E. Law; M. Reichstein; J. Sulzman. 2005. An analysis of soil respiration across northern hemisphere temperate ecosystemsBiogeochemistry. 73:1, 29-70.
Daniel A. Sims; Abdullah F. Rahman; Vicente D. Cordova; Dennis D. Baldocchi; Lawrence B. Flanagan; Allen H. Goldstein; David Y. Hollinger; Laurent Misson; Russell K. Monson; Hans P. Schmid. 2005. Midday values of gross CO2 flux and light use efficiency during satellite overpasses can be used to directly estimate eight-day mean fluxAgricultural and Forest Meteorology. 131:1-2, 1-12.
L. H. Gu; E. M. Falge; T. Boden; D. D. Baldocchi; T. A. Black; S. R. Saleska; T. Suni; S. B. Verma; T. Vesala; S. C. Wofsy; L. K. Xu. 2005. Objective threshold determination for nighttime eddy flux filteringAgricultural and Forest Meteorology. 128:3-4, 179-197.
W. G. Bain; L. Hutyra; D. C. Patterson; A. V. Bright; B. C. Daube; J. W. Munger; S. C. Wofsy. 2005. Wind-induced error in the measurement of soil respiration using closed dynamic chambersAgricultural and Forest Meteorology. 131:3-4, 225-232.
B. Bond-Lamberty; C. K. Wang; S. T. Gower. 2004. A global relationship between the heterotrophic and autotrophic components of soil respiration?Global Change Biology. 10:10, 1756-1766.
C. Yi; R. Li; P. S. Bakwin; A. Desai; D. M. Ricciuto; S.P. Burns; A. A. Turnipseed; S. C. Wofsy; J. W. Munger; K. Wilson; R. K. Monson. 2004. A nonparametric method for separating photosynthesis and respiration components in CO2 flux measurementsGeophysical Research Letters. 31:17, L17107.
A. H. Magill; J. D. Aber; W. S. Currie; K. J. Nadelhoffer; M. E. Martin; W. H. McDowell; J. M. Melillo; P. Steudler. 2004. Ecosystem response to 15 years of chronic nitrogen additions at the Harvard Forest LTER, Massachusetts, USAForest Ecology and Management. 196:1, 7-28.
C. T. Lai; J. R. Ehleringer; P. Tans; S. C. Wofsy; S. P. Urbanski; D. Y. Hollinger. 2004. Estimating photosynthetic C-13 discrimination in terrestrial CO2 exchange from canopy to regional scalesGlobal Biogeochemical Cycles. 18:1, GB1041, doi:10.1029/2003GB002148.
U. Seibt; W. A. Brand; M. Heimann; J. Lloyd; J. P. Severinghaus; L. Wingate. 2004. Observations of O-2 : CO2 exchange ratios during ecosystem gas exchangeGlobal Biogeochemical Cycles. 18:4, GB4024, doi:10.1029/2004GB002242.
R. M. Staebler; D. R. Fitzjarrald. 2004. Observing subcanopy CO2 advectionAgricultural and Forest Meteorology. 122:3-4, 139-156.
P.S. Bakwin; K. J. Davis; C. Yi; S.C. Wofsy; J. W. Munger; L. Haszpra; Z. Barcza. 2004. Regional carbon dioxide fluxes from mixing ratio dataTellus Series B-Chemical and Physical Meteorology. 56B:4, 301-311.
A. J. Jarvis; V. J. Stauch; K. Schulz; P. C. Young. 2004. The seasonal temperature dependency of photosynthesis and respiration in two deciduous forestsGlobal Change Biology. 10:6, 939-950.
D. P. Turner; S. Urbanski; D. Bremer; S. C. Wofsy; T. Meyers; S. T. Gower; M. Gregory. 2003. A cross-biome comparison of daily light use efficiency for gross primary productionGlobal Change Biology. 9:3, 383-395.
M. A. White; A. R. Nemani. 2003. Canopy duration has little influence on annual carbon storage in the deciduous broad leaf forestGlobal Change Biology. 9:7, 967-972.
L. H. Gu; D. D. Baldocchi; S. C. Wofsy; J. W. Munger; J. J. Michalsky; S. P. Urbanski; T. A. Boden. 2003. Response of a deciduous forest to the Mount Pinatubo eruption: Enhanced photosynthesisScience. 299:5615, 2035-2038.
E. A. Davidson; K. Savage; P. Bolstad; D. A. Clark; P. S. Curtis; D. S. Ellsworth; P. J. Hanson; B. E. Law; Y. Luo; K. S. Pregitzer; J. C. Randolph; D. Zak. 2002. Belowground carbon allocation in forests estimated from litterfall and IRGA-based soil respiration measurementsAgricultural and Forest Meteorology. 113:1-4, 39-51.
P. S. Curtis; P. J. Hanson; P. Bolstad; C. Barford; J. C. Randolph; H. P. Schmid; K. B. Wilson. 2002. Biometric and eddy-covariance based estimates of annual carbon storage in five eastern North American deciduous forestsAgricultural and Forest Meteorology. 113:1-4, 3-19.
E. A. Davidson; K. Savage; L. V. Verchot; R. Navarro. 2002. Minimizing artifacts and biases in chamber-based measurements of soil respirationAgricultural and Forest Meteorology. 113:1-4, 21-37.
C. C. Barford; S. C. Wofsy; M. L. Goulden; J. W. Munger; E. H. Pyle; S. P. Urbanski; L. Hutyra; S. R. Saleska; D. Fitzjarrald; K. Moore. 2001. Factors controlling long- and short-term sequestration of atmospheric CO2 in a mid-latitude forestScience. 294:5547, 1688-1691.
K. E. Savage; E. A. Davidson. 2001. Interannual variation of soil respiration in two New England forestsGlobal Biogeochemical Cycles. 15:2, 337-350.
P. B. Reich; D. P. Turner; P. Bolstad. 1999. An approach to spatially distributed modeling of net primary production (NPP) at the landscape scale and its application in validation of EOS NPP productsRemote Sensing of Environment. 70:1, 69-81.
M. J. Potosnak; S. C. Wofsy; A. S. Denning; T. J. Conway; J. W. Munger; D. H. Barnes. 1999. Influence of biotic exchange and combustion sources on atmospheric CO2 concentrations in New England from observations at a forest flux towerJournal of Geophysical Research-Atmospheres. 104:D8, 9561.
E. L. Singsaas; M. M. Laporte; J. Z. Shi; R. K. Monson; D. R. Bowling; K. Johnson; M. Lerdau; A. Jasentuliytana; T. D. Sharkey. 1999. Kinetics of leaf temperature fluctuation affect isoprene emission from red oak (Quercus rubra) leavesTree Physiology. 19:14, 917-924.
S. L. Bassow; F. A. Bazzaz. 1997. Intra- and inter-specific variation in canopy photosynthesis in a mixed deciduous forestOecologia. 109:4, 507-515.
M. L. Goulden; J. W. Munger; S. M. Fan; B. C. Daube; S. C. Wofsy. 1996. Measurements of carbon sequestration by long-term eddy covariance: Methods and a critical evaluation of accuracyGlobal Change Biology. 2:3, 169.
R. H. Waring; B. E. Law; M. L. Goulden; S. L. Bassow; R. W. McCreight; S. C. Wofsy; F. A. Bazzaz. 1995. Scaling Gross Ecosystem Production at Harvard Forest with Remote-Sensing - a Comparison of Estimates from a Constrained Quantum-Use Efficiency Model and Eddy-CorrelationPlant, Cell and Environment. 18:10, 1201-1213.
A. H. Goldstein; S. C. Wofsy; C. M. Spivakovsky. 1995. Seasonal-variations of nonmethane hydrocarbons in rural new-england - constraints on OH concentrations in northern midlatitudesJournal of Geophysical Research-Atmospheres. 100:D10, 21023.
S. C. Wofsy; M. L. Goulden; J. W. Munger; S. M. Fan; P. S. Bakwin; B. C. Daube; S. L. Bassow; F. A. Bazzaz. 1993. Net exchange of CO2 in a midlatitude forestScience. 260:5112, 1314.

NOTE: These pages show the current information available at http://www.fluxdata.org about this tower. If any of this information is wrong or missing, please submit corrections and updates via the form at http://www.fluxdata.org/AncDataUpdate/default.aspx.