AmeriFlux Publications from the Community

Orchidee-Peat (Revision 4596), A Model For Northern Peatland Co&Lt;Sub&Gt;2&Lt;/Sub&Gt;, Water, And Energy Fluxes On Daily To Annual Scales
Qiu, C., Zhu, D., Ciais, P., Guenet, B., Krinner, G., Peng, S., Aurela, M., Bernhofer, C., Brümmer, C., Bret-Harte, S., Chu, H., Chen, J., Desai, A. R., Dušek, J., Euskirchen, E. S., Fortuniak, K., Flanagan, L. B., Friborg, T., Grygoruk, M., Gogo, S., Grünwald, T., Hansen, B. U., Holl, D., Humphreys, E., Hurkuck, M., Kiely, G., Klatt, J., Kutzbach, L., Largeron, C., Laggoun-Défarge, F., Lund, M., Lafleur, P. M., Li, X., Mammarella, I., Merbold, L., Nilsson, M. B., Olejnik, J., Ottosson-Löfvenius, M., Oechel, W., Parmentier, F. W., Peichl, M., Pirk, N., Peltola, O., Pawlak, W., Rasse, D., Rinne, J., Shaver, G., Schmid, H. P., Sottocornola, M., Steinbrecher, R., Sachs, T., Urbaniak, M., Zona, D., Ziemblinska, K.

Peatlands store substantial amounts of carbon and are vulnerable to climate change. We present a modified version of the Organising Carbon and Hydrology In Dynamic Ecosystems (ORCHIDEE) land surface model for simulating the hydrology, surface energy, and CO2 fluxes of peatlands on daily to annual timescales. The model includes a …

Journal: Geoscientific Model Development, Volume 11 (2): 497-519 (2018), ISBN . DOI: 10.5194/gmd-11-497-2018 Sites: CA-Mer, CA-WP1, CA-WP2, CA-WP3, US-Bes, US-ICs, US-Los, US-WPT

Does day and night sampling reduce spurious correlation between canopy photosynthesis and ecosystem respiration?
Dennis Baldocchi, Cove Sturtevant

It is necessary to partition eddy covariance measurements of carbon dioxide exchange into its offsetting gross fluxes, canopy photosynthesis, and ecosystem respiration, to understand the biophysical controls on the net fluxes. And independent estimates of canopy photosynthesis (G) and ecosystem respiration (R) are needed to validate …

Journal: Agricultural and Forest Meteorology, Volume 207: 117-126 (2015), ISBN . DOI: 10.1016/j.agrformet.2015.03.010 Sites: CA-Ca1, CA-Ca2, CA-Ca3, CA-Let, CA-Mer, CA-NS1, CA-NS3, CA-NS5, CA-NS6, CA-NS7, CA-Oas, CA-Obs, CA-Ojp, CA-Qcu, CA-Qfo, CA-SJ2, CA-SJ3, CA-TP4, CA-WP1, US-ARM, US-Aud, US-Bo1, US-Ho1, US-Ho2, US-IB2, US-KS2, US-MMS, US-MOz, US-NC2, US-NR1, US-SO2, US-SO3, US-SO4, US-SP2, US-SP3, US-SRM, US-Ton, US-Tw3, US-UMB, US-Var, US-WBW, US-Wkg, US-Wrc

Use Of Change-Point Detection For Friction–Velocity Threshold Evaluation In Eddy-Covariance Studies
Barr, A., Richardson, A., Hollinger, D., Papale, D., Arain, M., Black, T., Bohrer, G., Dragoni, D., Fischer, M., Gu, L., Law, B., Margolis, H., McCaughey, J., Munger, J., Oechel, W., Schaeffer, K.

Journal: Agricultural And Forest Meteorology, Volume 171-172: 31-45 (2013), ISBN . DOI: 10.1016/j.agrformet.2012.11.023 Sites: CA-Ca1, CA-Ca2, CA-Ca3, CA-Gro, CA-Let, CA-Mer, CA-NS1, CA-Oas, CA-Obs, CA-Ojp, CA-Qfo, CA-SJ1, CA-SJ2, CA-SJ3, CA-TP4, CA-WP1, US-ARM, US-Dk3, US-Ha1, US-Ho1, US-IB1, US-Los, US-Me3, US-Me5, US-MMS, US-MOz, US-Ne1, US-Ne2, US-Ne3, US-NR1, US-Shd, US-SO2, US-Syv, US-Ton, US-UMB, US-Var, US-WCr

Nitrogen Deposition And Increased Carbon Accumulation In Ombrotrophic Peatlands In Eastern Canada
Turunen, J., Roulet, N. T., Moore, T. R., Richard, P. J.

Recent and long-term accumulation rates of carbon (C), using ²¹⁰Pb- and ¹⁴C-dating, were examined in 23 ombrotrophic peatlands in eastern Canada, where average 1990–1996 atmospheric wet nitrogen (N) deposition ranged from 0.3 to 0.8 g N m⁻² yr⁻¹. The average recent rate of C accumulation …

Journal: Global Biogeochemical Cycles, Volume 18 (3): n/a-n/a (2004), ISBN . DOI: 10.1029/2003gb002154 Sites: CA-Mer

On The Construction And Calibration Of Dual-Probe Heat Capacity Sensors
Ham, J. M., Benson, E. J.

Dual-probe heat-capacity (DPHC) sensors can be used to measure soil heat capacity (C), water content, and temperature. Research was conducted to test design factors that affect sensor calibration, including: (i) calibration media, (ii) diameter and length of the needle probes, (iii) sensor body material, and (vi) duration …

Journal: Soil Science Society Of America Journal, Volume 68 (4): 1185-1190 (2004), ISBN . DOI: 10.2136/sssaj2004.1185 Sites: CA-Mer

Interannual Variability In The Peatland-Atmosphere Carbon Dioxide Exchange At An Ombrotrophic Bog
Lafleur, P. M., Roulet, N. T., Bubier, J. L., Frolking, S., Moore, T. R.

Eddy covariance measurements of net ecosystem carbon dioxide (CO₂) exchange (NEE) were taken at an ombrotrophic bog near Ottawa, Canada from 1 June 1998 to 31 May 2002. Temperatures during this period were above normal except for 2000 and precipitation was near normal in 1998 and 1999, above normal in 2000, and well below …

Journal: Global Biogeochemical Cycles, Volume 17 (2): n/a-n/a (2003), ISBN . DOI: 10.1029/2002gb001983 Sites: CA-Mer

Modeling Seasonal To Annual Carbon Balance Of Mer Bleue Bog, Ontario, Canada
Frolking, S., Roulet, N. T., Moore, T. R., Lafleur, P. M., Bubier, J. L., Crill, P. M.

Northern peatlands contain enormous quantities of organic carbon within a few meters of the atmosphere and play a significant role in the planetary carbon balance. We have developed a new, process-oriented model of the contemporary carbon balance of northern peatlands, the Peatland Carbon Simulator (PCARS). Components of PCARS are …

Journal: Global Biogeochemical Cycles, Volume 16 (3): 1-21 (2002), ISBN . DOI: 10.1029/2001gb001457 Sites: CA-Mer

Plant Biomass And Production And CO2 Exchange In An Ombrotrophic Bog
Moore, T. R., Bubier, J. L., Frolking, S. E., Lafleur, P. M., Roulet, N. T.

Above-ground biomass was measured at bog hummock, bog hollow and poor-fen sites in Mer Bleue, a large, raised ombrotrophic bog near Ottawa, Ont., Canada. The average above-ground biomass was 587 g m⁻² in the bog, composed mainly of shrubs and Sphagnum capitula. In the poor fen, the …

Journal: Journal Of Ecology, Volume 90 (1): 25-36 (2002), ISBN . DOI: 10.1046/j.0022-0477.2001.00633.x Sites: CA-Mer
Posted: January 30, 2017

Groundwater Flow Patterns In A Large Peatland
Fraser, C., Roulet, N., Lafleur, M.

Groundwater flow patterns and geochemistry were studied in the Mer Bleue bog, near Ottawa, Ontario, Canada. Groundwater flow patterns alternated between recharge, i.e. head gradients producing flow from the surface of the peatland to the deeper peat, and discharge, i.e. head gradients indicating flow from the deeper peat …

Journal: Journal Of Hydrology, Volume 246 (1-4): 142-154 (2001), ISBN . DOI: 10.1016/s0022-1694(01)00362-6 Sites: CA-Mer

Annual Cycle Of CO2 Exchange At A Bog Peatland
Lafleur, P. M., Roulet, N. T., Admiral, S. W.

Eddy covariance measurements of the carbon dioxide flux from an ombrotrophic bog near Ottawa, Canada, were made between June 1, 1998, and May 31, 1999. Net ecosystem exchange of CO₂ (NEE) showed …

Journal: Journal Of Geophysical Research: Atmospheres, Volume 106 (D3): 3071-3081 (2001), ISBN . DOI: 10.1029/2000jd900588 Sites: CA-Mer

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